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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

Commission file number 000-23993

Broadcom Corporation

(Exact Name of Registrant as Specified in Its Charter)

16215 Alton Parkway

Irvine, California 92618-3616

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, Including Area Code: (949) 450-8700

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:  Class A common stock

(Title of class)                                                    

     Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes þ         No o

     Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.     Yes o         No þ

     Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes þ         No o

     Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    þ

     Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

     Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).    Yes o         No þ

     The aggregate market value of the registrant’s common stock, $0.0001 par value per share, held by non-affiliates of the registrant on June 30, 2005, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $10.081 billion (based on the closing sales price of the registrant’s common stock on that date). Shares of the registrant’s common stock held by each officer and director and each person known to the registrant to own 10% or more of the outstanding voting power of the registrant have been excluded in that such persons may be deemed to be affiliates. This determination of affiliate status is not a determination for other purposes.

     The registrant has two classes of common stock authorized, Class A common stock and Class B common stock. The rights, preferences and privileges of each class of common stock are substantially identical except for voting rights. Shares of Class B common stock are not publicly traded but are convertible at any time into shares of Class A common stock on a one-for-one basis. As of December 31, 2005 there were 297.9 million shares of Class A common stock and 51.7 million shares of Class B common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

     Part III incorporates by reference certain information from the registrant’s definitive proxy statement (the “Proxy Statement”) for the 2006 Annual Meeting of Shareholders to be filed on or before March 31, 2006.

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Broadcom^®, the pulse logo, 54g^®, Blutonium^®, BroadVoice^®, NetXtreme^®, QAMLink^®, QuadSquad^®, SiByte^®, StrataSwitch^®, StrataXGS^®, V-thernet^®, Videocore^®, 125 High Speed Mode^tm, AirForce^tm, BladeRunner^tm, BroadRange^tm, CableChecker^tm, CryptoNetX^tm, FirePath^tm, InConcert^tm, LoopDTech^tm, NetLink^tm, NetXtreme II^tm, ROBOSwitch^tm, ROBOswitch-plus^tm, ROBO-HS^tm, SecureEasySetup^tm, StrataSwitch II^tm, StrataXGS III^tm and SystemI/ O^tm are among the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the property of their respective owners.

^©2006 Broadcom Corporation. All rights reserved.

BROADCOM CORPORATION

ANNUAL REPORT ON FORM 10-K

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2005

TABLE OF CONTENTS

CAUTIONARY STATEMENT

      All statements included or incorporated by reference in this Report, other than statements or characterizations of historical fact, are forward-looking statements. Examples of forward-looking statements include, but are not limited to, statements concerning projected net revenue, costs and expenses and gross margin; our accounting estimates, assumptions and judgments; the impact of new accounting rules related to the expensing of stock options on our future reported results; our success in pending litigation; the demand for our products; the effect that seasonality and volume fluctuations in the demand for our customers’ consumer-oriented products will have on our quarterly operating results; our dependence on a few key customers for a substantial portion of our revenue; our ability to scale our operations in response to changes in demand for existing products and services or the demand for new products requested by our customers; the competitive nature of and anticipated growth in our markets; our ability to migrate to smaller process geometries; manufacturing, assembly and test capacity; our ability to consummate acquisitions and integrate their operations successfully; our prospective needs for additional capital; inventory and accounts receivable levels; and the level of accrued rebates. These forward-looking statements are based on our current expectations, estimates and projections about our industry and business, management’s beliefs, and certain assumptions made by us, all of which are subject to change. Forward-looking statements can often be identified by words such as “anticipates,” “expects,” “intends,” “plans,” “predicts,” “believes,” “seeks,” “estimates,” “may,” “will,” “should,” “would,” “could,” “potential,” “continue,” “ongoing,” similar expressions, and variations or negatives of these words. These statements are not guarantees of future performance and are subject to risks, uncertainties and assumptions that are difficult to predict. Therefore, our actual results could differ materially and adversely from those expressed in any forward-looking statements as a result of various factors, some of which are listed under “Risk Factors” in Item 1A of this Report. These forward-looking statements speak only as of the date of this Report. We undertake no obligation to revise or update publicly any forward-looking statement for any reason, except as otherwise required by law.

PART I

Overview

      Broadcom Corporation is a global leader in semiconductors for wired and wireless communications. Our products enable the delivery of voice, video, data and multimedia to and throughout the home, the office and the mobile environment. Broadcom provides the industry’s broadest portfolio of state-of-the-art system-on-a-chip and software solutions to manufacturers of computing and networking equipment, digital entertainment and broadband access products, and mobile devices. Our diverse product portfolio includes solutions for digital cable, satellite and Internet Protocol (IP) set-top boxes and media servers; high definition television (HDTV); high definition DVD players and personal video recording (PVR) devices; cable and DSL modems and residential gateways; high-speed transmission and switching for local, metropolitan, wide area and storage networking; System I/ O^tm server solutions; broadband network and security processors; wireless and personal area networking; cellular and terrestrial wireless communications; and Voice over Internet Protocol (VoIP) gateway and telephony systems.

      Broadcom was incorporated in California in August 1991. Our principal executive offices are located at 16215 Alton Parkway, Irvine, California 92618-3616, and our telephone number at that location is 949.450.8700. Our Internet address is www.broadcom.com. Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, amendments to those reports and other Securities and Exchange Commission, or SEC, filings are available free of charge through our website as soon as reasonably practicable after such reports are electronically filed with, or furnished to, the SEC. Our Class A common stock trades on the NASDAQ National Market^® under the symbol BRCM. The inclusion of our website address in this Report does not include or incorporate by reference into this Report any information on our website.

Industry Environment and Our Business

      Over the past two decades communications technologies have evolved dramatically in response to the proliferation of the Internet and the emergence of new data-intensive computing and communications

applications. These applications include, among others, high-speed Internet web browsing, wireless networking, high definition television and DVD players, VoIP-enabled products, sophisticated Gigabit Ethernet corporate networks, portable media players that are able to play both audio and video, cellular handsets that act as a camera or camcorder, handle email and surf the Internet, and mobile TV and game platforms and other wireless-enabled consumer electronics and peripherals. This evolution has also changed the ways in which we communicate. Consumers and businesses continue to seek faster, more cost-effective ways to receive and transmit voice, video, data and multimedia to and throughout the home, the office and the mobile environment. We can now access and communicate information via wired and wireless networks through a variety of electronic devices, including personal desktop and laptop computers, digital cable and satellite set-top boxes, high definition televisions, handheld computing devices such as personal digital assistants, or PDAs, and cellular phones. These applications and devices require increasingly higher processing speeds and information transfer rates within the computing systems and the data storage devices that support them and across the network communication infrastructures that serve them.

      This evolution has inspired equipment manufacturers and service providers to develop and expand existing wired and wireless communications markets, and has created the need for new generations of integrated circuits. Integrated circuits, or chips, are made using semiconductor wafers imprinted with a network of electronic components. They are designed to perform various functions such as processing electronic signals, controlling electronic system functions, and processing and storing data. Today all electronic products use integrated circuits, which are essential components of personal computers, wired and wireless voice and data communications devices, networking products and home entertainment equipment.

      The broadband transmission of digital information over existing wired and wireless infrastructures requires very sophisticated semiconductor solutions to perform critical systems functions such as complex signal processing, converting digital data to and from analog signals, and switching and routing of packets of information over Internet Protocol, or IP, -based networks. Solutions that are based on multiple discrete analog and digital chips generally cannot achieve the cost-effectiveness, performance and reliability required by today’s communications markets. These requirements are best addressed by new generations of highly integrated mixed-signal devices that combine complex analog, digital, and in many cases, radio frequency functions onto a single integrated circuit, and can be manufactured in high volumes using cost-effective process technologies.

Target Markets and Broadcom^® Products

      We design, develop and supply a diverse portfolio of products targeted to a variety of wired and wireless communications market. Our semiconductor and software solutions are ubiquitous, embedded in cable and DSL modems and digital set-top boxes in the home, digital televisions, high definition DVD players, networking equipment in the enterprise, wireless-enabled laptop and desktop computers, and advanced PDAs and cellular phones, among other wired and wireless equipment.

      The following is a brief description of each of our target markets and the system-on-a-chip and software solutions that we provide for each market.

     Broadband Communications

      Broadcom offers manufacturers a range of broadband communications and consumer electronics systems-on-a-chip that enable voice, video and data services over residential wired and wireless networks. These highly integrated silicon solutions continue to enable advanced system solutions, which include broadband modems and residential gateways, digital cable, satellite and IP set-top boxes and media servers, high definition and digital televisions, and HD DVD players and personal video recording devices.

      Unlike traditional dial-up modems that provide online access through the telephone system, cable modems provide users high-speed Internet access through a cable television network. Although cable networks were originally established to deliver television programming to subscribers’ homes, cable television operators have generally upgraded their systems to support two-way communications, high-speed Internet access and

telecommuting through the use of cable modems. These modems are designed to achieve downstream transmission speeds of up to 43 megabits per second, or Mbps (North American standard), or 56 Mbps (international standard), and upstream transmission to the network at speeds of up to 30 Mbps. The speeds achieved by cable modems are nearly 1,000 times faster than the fastest analog telephone modems, which transmit downstream at up to 56 kilobits per second, or Kbps, and upstream at up to 28.8 Kbps. Cable modems typically connect to a user’s PC through a standard 10/100BASE-T Ethernet card or Universal Serial Bus, also known as a USB, connection. A device called a cable modem termination system, or CMTS, located at a local cable operator’s network hub, communicates through television channels to cable modems in subscribers’ homes and controls access to cable modems on the network.

      The cable industry’s adoption of an open standard, the Data Over Cable Service Interface Specification, commonly known as DOCSIS^®, has made possible interoperability among various manufacturers’ cable modems and CMTS equipment used by different cable networks. The first specification, DOCSIS 1.0, was adopted in 1997 and enabled the cost-effective deployment of cable modems. In 1998 the DOCSIS 1.1 specification was announced. This specification enhanced DOCSIS 1.0 to include support for cable telephony using VoIP technology, streaming video and managed data services. In 2002 DOCSIS 2.0 was approved. DOCSIS 2.0 adds support for higher upstream transmission speeds of up to 30 Mbps and more symmetric IP services, and provides extra capacity for cable telephony. The recently released DOCSIS 3.0 specification, which is currently under development, provides enhanced data rates and security, while maintaining backwards compatibility with prior standards.

      The high speeds of today’s cable modems can enable an entirely new generation of multimedia-rich content over the Internet and allow cable operators to expand their traditional video product offerings to include data and telephone services. The adoption of cable modem services and the continued proliferation of homes with multiple PCs have also generated the need for residential networking. Cable television operators have recognized the opportunity to include this feature in the equipment they utilize for cable modem services through either home telephone line or wireless solutions, and the cable industry has created a specification called CableHome^tm that defines how a home intranet interoperates with a cable operator’s Internet service.

      We offer integrated semiconductor solutions for cable modems and cable modem termination systems. We currently have a leading market position in both equipment areas, with an extensive product offering for the high-speed, two-way transmission of voice, video and data services to residential customers. We offer a complete system-level solution that not only includes integrated circuits, but also reference design hardware and a full software suite to support our customers’ needs and accelerate their time to market.

      Cable Modem Solutions. All of our cable modem chips are built around our QAMLink^® DOCSIS-compliant transceiver and media access controller, or MAC, technologies. These technologies enable downstream data rates up to 56 Mbps and upstream data rates up to 30 Mbps and are compliant with DOCSIS versions 1.0, 1.1 and 2.0. These devices provide a complete DOCSIS system solution in silicon, enabling quality of service to support constant bit rate services like VoIP and video streaming.

      Residential Broadband Gateway Solutions. The levels of integration and performance that we continue to achieve in our cable modem chips are reducing the cost and size of cable modems while providing consumers with easy to use features and seamless integration to other transmission media. As a result, cable modem functionality is evolving into a small silicon core that can be incorporated into other consumer devices for broader distribution of IP-based services throughout the home. Broadcom offers residential broadband gateway solutions that bring together a range of capabilities, including those for cable modems, digital set-top boxes, home networking, VoIP and Ethernet connectivity. These products allow cable operators worldwide to provide residential broadband gateways capable of delivering digital telephone service via the PacketCable^tm specification, IP video, and cable modem Internet services, as well as data over in-home Ethernet or wireless networks.

      CMTS Solutions. We have a complete end-to-end DOCSIS 1.0, 1.1, 2.0 and 3.0 compliant cable modem semiconductor solution for both head-end and subscriber locations. Our CMTS chipset consists of downstream and upstream physical layer, or PHY, devices and a DOCSIS MAC. This cable modem termination system enables the exchange of information to and from the subscriber location, making it a key element in the delivery of broadband access over cable.

      Digital subscriber line technologies, commonly known as DSL, represent a family of broadband technologies that use a greater range of frequencies over existing telephone lines than traditional telephone services. This provides greater bandwidth to send and receive information. DSL speeds range from 128 Kbps to 52 Mbps depending upon the particular DSL standard and the distance between the central office and the subscriber. These data rates allow local exchange carriers to provide, and end users to receive, a wide range of new broadband services.

      DSL technology has a number of standards or line codes used worldwide. We support all standards-based line codes, such as asymmetric DSL, or ADSL, ADSL2, ADSL2+ and very-high-speed DSL, or VDSL, including the standard Annexes used in North America, Europe, Japan and China. In addition, we provide end-to-end technology, with solutions designed for both customer premises equipment, or CPE, and central office applications. Our DSL technologies enable local exchange carriers and enterprise networking vendors to deliver bundled broadband services, such as digital video, high-speed Internet access, VoIP, video teleconferencing and IP data business services, over existing telephone lines.

      DSL Modem and Residential Gateway Solutions. For DSL CPE applications, we provide products that address the wide variety of local area network, or LAN, connectivity options, including Ethernet, USB-powered solutions, VoIP-enabled access devices and IEEE 802.11 wireless access points with multiple Ethernet ports. These solutions also provide a fully scalable architecture to address emerging value-added services such as in-home voice and video distribution. Wide area network connectivity is provided using integrated, standards-compliant PHY technology.

      DSL Central Office Solutions. We also provide highly integrated semiconductor solutions for DSL central office applications. Our BladeRunner^tm high-density central office DSL chipset supports all worldwide DSL standards using our proprietary Firepath^tm 64-bit digital signal processor. We believe these solutions will enable equipment manufacturers of digital subscriber line access multiplexers, or DSLAMs, and next generation digital loop carriers to offer a significant increase in the number of DSL connections that can be supported within telecommunication companies’ tight heat, power and space constraints. We also provide the inter-networking software that is enabling DSLAM technology to transition from Asynchronous Transfer Mode to Internet Protocol.

      VDSL Solutions. For VDSL applications, we offer our QAM-based V-thernet^® product family, which supports Ethernet transport over standard telephone wires and is instrumental in developing standards and products for next-generation VDSL2 applications.

      The last decade has seen rapid growth in the quantity and diversity of television programming. Despite ongoing efforts to upgrade the existing cable infrastructure, an inadequate number of channels exist to provide the content demanded by consumers. In an effort to increase the number of channels and provide higher picture quality, cable service providers began offering digital programming in 1996 through the use of new digital cable set-top boxes. These digital cable set-top boxes facilitate high-speed digital communications between a subscriber’s television and the cable network. Digital cable set-top boxes are currently able to support downstream transmission speeds to the subscriber up to 43 Mbps (North American standard) or 56 Mbps (international standard), and several hundred MPEG-2 or MPEG-4 advanced video coding compressed digital television channels.

      Direct broadcast satellite, or DBS, is the primary alternative to cable for providing digital television programming. DBS broadcasts video and audio data from satellites directly to digital set-top boxes in the home via dish antennas. Due to the ability of DBS to provide television programming where no cable infrastructure is in place, we believe that the global market for DBS set-top boxes will outpace the market for cable set-top boxes.

      The Federal Communications Commission has stated that traditional terrestrial broadcast stations will be required to broadcast in digital format. Currently, the FCC is targeting 2007 for this mandated digital conversion. This conversion will ultimately require all television sets that are 13 inches or larger, DVD players

and video cassette recorders to incorporate an HDTV receiver. We believe this conversion to digital broadcasting will create demand for new digital cable and satellite set-top boxes and digital television receivers. In addition, manufacturers continue to develop and introduce new generations of digital cable and satellite set-top boxes that incorporate enhanced functionalities, such as Internet access, personal video recording, or PVR, video on demand, interactive television, HDTV, 3-D gaming, audio players and various forms of home networking.

      TV manufacturers also plan to incorporate digital cable-ready capability into television sets for the North American market by integrating today’s cable set-top box functionality directly into TV sets. The manufacturers of TVs, through their trade association, the Consumer Electronics Association, and in cooperation with North American cable operators, have created an industry specification called the “plug-n-play” agreement. This agreement and its associated specification define how to design digital cable-ready TVs for connection into the North American cable infrastructure.

      Cable-TV Set-Top Box Solutions. We offer a complete silicon platform for the digital cable-TV set-top box market. These highly integrated chips give manufacturers a broad range of features and capabilities for building standard digital cable-TV set-top boxes for digital video broadcasting, as well as high-end interactive set-top boxes. These high-end set-top boxes merge high-speed cable modem functionality with studio-quality graphics, text and video for both standard definition television, or SDTV, and HDTV formats.

      Our cable-TV set-top box silicon consists of front-end transceivers with downstream, upstream and MAC functions, single-chip cable modems, advanced 2D/3D video-graphics encoders and decoders, radio frequency television tuners based on complementary metal oxide semiconductor, or CMOS, process technology, and digital visual interface chipsets. These cable-TV set-top box chips support most industry transmission and television standards, enabling universal interoperability and easy retail channel distribution. Peripheral modules incorporated into front-end devices also provide support for common set-top box peripheral devices, such as infrared remotes and keyboards, LED displays and keypads.

      Our chips provide a comprehensive silicon platform for high-end interactive set-top boxes, supporting the simultaneous viewing of television programming with Internet content capability in either HDTV or SDTV format. This capability offers consumers a true interactive environment, allowing them to access Internet content while watching television. By adding our home networking and VoIP technologies, these set-top boxes can also support the functions of a residential broadband gateway for receiving and distributing digital voice and data services throughout the home over Ethernet or wireless networking. In addition, our set-top box semiconductor solutions incorporate PVR functionality. This allows viewers to watch and record multiple programs and enables additional features such as selective viewing, fast forward, fast reverse, skip forward, skip back, and slow motion and frame-by-frame viewing.

      DBS Solutions. By leveraging our extensive investment and expertise in the cable-TV set-top box market, we have also developed comprehensive DBS solutions. These products include an advanced, high-definition video graphics subsystem, which drives the audio, video and graphic interfaces in DBS set-top boxes and provides multi-stream control to support PVR capabilities; a CMOS satellite tuner, which allows our customers to provide additional channel offerings; front-end receiver chips for set-top boxes, including an advanced modulation system to increase satellite capacity; and a digital visual interface transmitter. In addition, we offer a complete end-to-end chipset for receiving and displaying HDTV. This chipset provides television and set-top box manufacturers with a high performance vestigial side band receiver and a 2D/3D video-graphics subsystem for SDTV and HDTV displays.

      To meet the needs of the growing broadband satellite market, we have also developed a complete satellite system solution that enables DBS providers to cost effectively deploy two-way broadband satellite services, enabling Internet access via satellite. This solution includes an advanced modulation digital satellite receiver, a digital satellite tuner/receiver and a high-performance broadband gateway modem, combining the functionality of a satellite modem, a firewall router and home networking into a single chip.

      IP Set-Top Box Solutions. In 2005 Broadcom also introduced a new family of next generation advanced video compression, high definition system-on-a-chip solutions for IP set-top boxes. These solutions include high

definition video decoder/audio processor chips and a dual channel high definition and personal video recorder chip.

      Digital TV Solutions. We were an early developer of advanced television systems committee, or ATSC, demodulators used for the reception of terrestrial HDTV signals broadcast in North America. Capitalizing on the FCC HDTV mandate and the “plug-n-play” agreement, as well as on our extensive cable-TV set-top box technology portfolio, we have developed a highly integrated digital TV system-on-a-chip solution. This digital TV solution, when combined with our existing satellite, cable or terrestrial demodulators, forms a complete semiconductor solution for HDTV delivery platforms, including satellite, cable or terrestrial set-top boxes and integrated high definition televisions. Our integrated HDTV solution will allow television manufacturers to develop digital cable-ready televisions that connect directly to the North American cable infrastructure without the need for an external set-top box.

      The DVD player market is currently undergoing a transition as a result of the increased adoption of HDTV sets by consumers and the advent of advanced video compression technologies, such as H.264 (also known as MPEG-4 Part 10/advanced video coding (AVC)) and VC-1 (SMPTE 421M), the SMPTE standard based on Microsoft^® Windows Media^® Video 9. These trends have led television broadcasters and movie studios to begin offering more high definition video content. In turn, consumer electronics manufacturers have begun offering high definition DVD players and recorders, with substantially greater storage capacity and the ability to effectively handle the significantly higher bit rates associated with high resolution HDTV content. However, similar to the battle between VHS versus Betamax in the 1970’s and 1980’s, two competing optical disc formats have emerged: the Blu-ray^tm and HD DVD^tm formats. Both Blu-ray and HD DVD disc formats offer significantly greater storage capacity than the current DVD standard, but they differ in the depth of the recording layer inside the disc; like a standard DVD, the recoding layer in an HD DVD is midway through the disc, while in a Blu-ray disc it can be found much closer to the surface. This difference makes the two formats incompatible.

      Broadcom entered the high definition DVD player market through our acquisition of Sand Video, a developer of advanced video compression technology, in April 2004. Our initial product for this market is a high definition video decoder/audio processor chip that is fully compliant with both the Blu-ray and HD DVD disc formats. This single-chip solution also provides backwards compatibility for current DVD video titles as well as new HD DVD titles that may be authored in an MPEG-2 format. In addition, we offer a reference design for the development of Blu-ray and HD DVD media players that includes our HD audio/video decoder chip, as well as an HD digital video system chip and a software platform that afford our customers a wide range of integration options.

     Enterprise Networking

      Broadcom designs and develops semiconductor solutions for PC, server and network equipment makers that provide products that handle the flow of information within small-to-medium- sized businesses, large enterprises and service provider networks. Our solutions enable these networks to offer higher capacity, faster, more cost-efficient transport and management of voice, data and video traffic across wired and wireless networks. For desktop computers and servers, we supply high-speed controllers, server I/ O chipsets and RAID storage controllers. On the infrastructure side, Broadcom produces end-to-end networking products including Ethernet physical layer and switching devices, optical networking components, embedded processors, security processors and serializers/deserializers.

      Local area networks, or LANs, consist of various types of equipment, such as servers, workstations and desktop and laptop computers, interconnected by copper, fiber or coaxial cables utilizing a common networking protocol, generally the Ethernet protocol. Ethernet scales in speed from 10 Mbps to 10 gigabits per second, or Gbps, providing both the bandwidth and scalability required in today’s dynamic networking environment. As the volume and complexity of network traffic continues to increase, communications bottlenecks have developed in

corporate LANs. As a result, new technologies such as Gigabit Ethernet, a networking standard that supports data transfer rates of up to one Gbps, and the 10 Gigabit Ethernet standard, which supports data transfer rates of up to 10 Gbps, are replacing older technologies such as Fast Ethernet, which supports data transfer rates of up to 100 Mbps, and 10BASE-T Ethernet, which supports data transfer rates of 10 Mbps.

      Gigabit Ethernet is emerging as the predominant networking technology for desktop and laptop computers. As Gigabit Ethernet is deployed to desktop and laptop computers, we expect server and backbone connections to continue to migrate to the new 10 Gigabit Ethernet standard. We further expect the continued use of switch connections in place of legacy repeater connections. Switches not only have the ability to provide dedicated bandwidth to each connection, but also provide routing functionality and possess the capability to deal with differentiated traffic such as voice, video and data. We anticipate that a significant portion of the installed base of 10/100BASE-T Ethernet switches as well as network interface cards, or NICs, will be upgraded to faster technologies.

      Our 10/100 Mbps Ethernet and Gigabit Ethernet transceivers, controllers and switches are integrated, low-power semiconductor solutions for servers, workstations, desktop and laptop computers, VoIP phones and wireless access points that enable the high-speed transmission of voice, video and data services over the Category 5 unshielded twisted-pair copper wiring widely deployed in enterprise and small office networks. We also offer 10 Gigabit Ethernet transceivers for network infrastructure products. These high-speed connections are enabling users to share Internet access, exchange graphics and video presentations, receive VoIP and video conferencing services, and share peripheral equipment, such as printers and scanners. In addition, we incorporate intelligent networking functionality into our devices, enabling system vendors to deploy enhanced classes of services and applications, typically found only in the core of the network, to every corporate desktop.

      Digital Signal Processing Communication Architecture. Our complex Ethernet transceivers are built upon a proprietary digital signal processing, or DSP, communication architecture optimized for high-speed enterprise network connections. Our DSP silicon core enables interoperability and robust performance over a wide range of cable lengths and operating conditions, and delivers performance of greater than 250 billion operations per second. This proprietary DSP architecture facilitates the migration path to smaller process geometries and minimizes the development schedule and cost of our transceivers. It has been successfully implemented in .35, .25, .18 and .13 micron CMOS processes, and in chips with one, four, six and eight ports.

      Fast Ethernet and Gigabit Ethernet Transceivers. Our 10/100 Ethernet transceiver product line ranges from single-chip 10/100 Ethernet transceivers to single-chip octal 10/100 Ethernet transceivers. These devices allow information to travel over standard Category 5 copper cable at rates of 10 Mbps and 100 Mbps. Our Gigabit Ethernet transceivers are enabling manufacturers to make equipment that delivers data at Gigabit speeds over existing Category 5 cabling. We believe this equipment can significantly upgrade the performance of existing networks without the need to rewire the network infrastructure with fiber or enhanced copper cabling. Additionally, we have developed a family of semiconductor solutions incorporating four transceivers in a single chip, which is optimized for high-port-density Gigabit Ethernet switches and routers. Our QuadSquad^® transceivers greatly reduce system costs by simplifying typical high-density board designs, further facilitating the deployment of Gigabit Ethernet bandwidth to the desktop.

      Our Gigabit transceivers are driving the market toward lower power, smaller footprint solutions, making it easier and less expensive to build 10/100/1000 Ethernet NICs, switches, hubs and routers and to put networking chips directly on computer motherboards in LAN on motherboard, or LOM, configurations. We plan to continue to incorporate additional functionality into all of our transceivers, providing customers with advanced networking features, on-chip and cable diagnostic capabilities and higher performance capabilities.

      10 Gigabit Ethernet Transceivers. We have developed a family of 10 Gigabit Ethernet CMOS transceivers. When combined with serial 10 Gigabit optics, these devices can simultaneously transmit and receive at 10 Gbps data rates over 100 kilometers of existing single mode optical fiber. A 10 Gigabit Ethernet link over such distances extends the reach of Ethernet into local, regional and metropolitan fiber optic networks. We believe that significant cost, performance and latency advantages can be realized when the Ethernet protocol and other associated quality of service capabilities are available in these network domains. We anticipate that convergence around 10 Gigabit Ethernet will allow massive data flow from remote storage sites across the country over the

metropolitan area network, or MAN, and into the corporate LAN, without unnecessary delays, costly buffering for speed mismatches or latency, or breaks in the quality of service protocol.

      SerDes Technology and Products. We have developed an extensive library of serializer/ deserializer, or SerDes, cores for Ethernet, storage and telecommunications network infrastructures. The technology is available in stand-alone SerDes devices or integrated with our standard and custom products. New generations of SerDes architectures provide advanced on-chip diagnostic intelligence to allow system designers to monitor, test and control high-speed serial links for signal integrity and bit error rate performance to reduce development cycles and costly field maintenance support.

      Gigabit Ethernet Controllers. Built upon five generations of Gigabit Ethernet MAC technology, our NetXtreme^® family of Gigabit Ethernet controllers supports peripheral component interconnect, or PCI^®, PCI-X^® and PCI Express^® local bus interfaces for use in NICs and LOM implementations. The NetXtreme family includes comprehensive solutions for servers, workstations, and desktop and laptop computers. These devices incorporate an integrated Gigabit Ethernet PHY transceiver and are provided with an advanced software suite available for a variety of operating systems. The NetXtreme architecture also features a processor-based design that enables advanced management software to run in firmware so it can be remotely upgraded through simple downloads. Our NetXtreme II^tm family of Ethernet controllers, introduced in 2004, consists of converged network interface controllers that are designed to improve server performance by integrating a TCP/ IP offload engine, remote direct memory access, iSCSI storage and remote management. NetXtreme II controllers simultaneously perform storage networking, high-performance clustering, accelerated data networking and remote system management pass-through functions. In 2005 Broadcom added new security features to our NetXtreme controllers, including integrated Trusted Platform Module 1.2 functionality, to enable PC manufacturers to offer hardware-based security as a standard feature on enterprise client personal computers. The entire NetXtreme product family is fabricated in a .13 micron or ..18 micron CMOS process.

      In 2005 Broadcom introduced its NetLink^tm family of Gigabit Ethernet controllers, which are based on the PCI Express bus architecture and optimized for small-to-medium-sized businesses. Designed for use in personal computers, NetLink controllers enable applications such as video editing and file transfer, LAN gaming, video conferencing, multimedia data sharing and desktop management, while at the same time offering very low power consumption.

      Ethernet Switches. We offer a broad switch-on-a-chip product line ranging from low-cost, unmanaged and managed, OSI Layer 2 eight port switch chips to high-end managed, Layer 3 through Layer 7 enterprise class switch chips.

      Our ROBOswitch-plus^tm product family consists of Layer 2+ switch chips supporting five, eight, 16 and 24 port 10/100 Ethernet switches, and our ROBO-HS^tm product family supports single-chip networking solutions for Layer 2+ Gigabit Ethernet configurations of four, five, eight, 16 and 24 ports. We believe our switch chips make it economical for the remote office/business office and small office/home office network markets to have the same high-speed local connectivity as the large corporate office market. Our highly integrated family of switch products combines the switching fabric, MACs, 10/100 and Gigabit Ethernet transceivers, media independent interface and packet buffer memory in single-chip solutions. These chips give manufacturers multiple switch design options that combine plug and play ease-of-use, scalability, network management features and non-blocking switching performance at optimal price points for the remote office and branch office user. In 2005 we incorporated two new technologies into our ROBOSwitch^tm products, CableChecker^tm technology, which finds the location of wiring faults without disrupting live network traffic, and LoopDTech^tm technology, which provides an immediate warning when a loop is introduced in the network, allowing the problem to be identified and remedied quickly. The ROBOswitch family includes products for unmanaged, smart and managed solutions.

      Our family of high-end StrataSwitch^® products consists of wire-speed, multi-layer chips that combine multiservice provisioning capabilities with switching, routing and traffic classification functionality in single-chip solutions. Replacing as many as 10 chips with one, our StrataSwitch II^tm family of chips incorporates 24 Fast Ethernet and two Gigabit Ethernet ports with advanced Layer 3 switching and multi-layer packet classification.

      Our StrataXGS^® product family provides the multi-layer switching capabilities of our StrataSwitch II technology with wire-speed Gigabit and 10 Gigabit Ethernet switching performance for enterprise business networks. These devices, in combination with our quad and octal Gigabit Ethernet transceivers, enable system vendors to build 12, 24 and 48 port multi-layer Gigabit Ethernet stackable switches, supporting systems with up to 1,536 Gigabit Ethernet ports. These multi-layer switches are capable of receiving, prioritizing and forwarding packets of voice, video and data at high speeds over existing corporate networks. The StrataXGS family also enables advanced network management capabilities in the switching infrastructure to track data flows and monitor or control bandwidth on any one of these flows. This results in a more intelligent use of network resources and enables a whole new set of network service applications that require high bandwidth, reliable data transmission, low latency and advanced quality service features such as streaming video and VoIP. In addition, our StrataXGS III^tm product family, introduced in 2005, incorporates advanced features such as IPv6 routing, unified wired and wireless switch management, advanced security and intrusion detection features, sophisticated traffic management, and scalable buffer and routing tables for high end applications.

      With the proliferation of data being accessed and sorted by the Internet and corporate intranets, the demand for servers has increased substantially. As integral pieces of the overall communications infrastructure, servers are multiprocessor-based computers that are used to support users’ PCs over networks and to perform data intensive PC functions such as accessing, maintaining and updating databases.

      The dramatic increase in the volume of business-critical data that is generated, processed, stored and manipulated has also created challenges for organizations, which must find new ways to efficiently manage the proliferation of stored data. Traditionally, many companies accessed stored network data using a direct attached storage architecture in which a single server controls access to each storage device, and stored data is only available to applications running on the server directly connected to the storage device. However, with the proliferation of stored data, many companies found that this architecture created bottlenecks in their networks. Many companies have moved to the use of new architectures such as networked attached storage, or NAS, and storage area networks, or SANs. In a NAS system, individual storage devices can be connected to a network and be made available to various servers on the network. In a SAN, multiple servers on a network are connected to a centralized pool of storage data devices using a switching element to enable data sharing at gigabit speeds. This shift in architecture has also inspired the creation of new interface protocols such as serial-ATA, or SATA, iSCSI and serial attached SCSI, or SAS, to connect computers, peripherals, storage devices and networks at high speeds.

      Unlike mobile and desktop PCs, which are dominated by central processing units, or CPUs, server, storage and workstation platforms require highly-tuned core logic to provide high bandwidth, high performance and the reliability, availability and scalability that customers demand. The Internet has created a new market for servers, storage and workstation platforms as users access data and entertainment stored on servers from their PCs, handheld computers and wireless handsets.

      Our SystemI/O semiconductor solutions act as the essential conduits for delivering high-bandwidth data in and out of servers, and coordinating all input/output, or I/O, transactions within server, storage and workstation platforms, including among external I/O devices, the main system memory and multiple CPUs.

      We provide core logic technology that manages the flow of data to and from a system’s processors, memory and peripheral I/O devices. Our SystemI/O products are used to design low-end and mid-range servers with two to four CPUs, as well as storage, workstation, blades and networking platforms. These products also provide reliability, availability and serviceability features. In 2005 we introduced a HyperTransport^tm-based server I/O controller that incorporates PCI Express, PCI-X, HyperTransport tunnel and Gigabit Ethernet interfaces. Our current generation of SystemI/O products supports the AMD Opteron^® product line and IBM PowerPC processors.

      Although our SystemI/O chips historically have been used primarily in servers sold by major PC server OEMs and motherboard manufacturers, over the last two years we have leveraged our server chipset technology and our expertise in networking technology into other expanding markets such as storage and networking. Our storage products include redundant array of inexpensive disks, or RAID, solutions for entry-level and mid-range

server applications, NAS-on-chip solutions targeted to the small business and residential user, and our converged network interface controllers that incorporate iSCSI storage as well as a TCP/IP offload engine, remote direct memory access, and remote management.

      To address the increasing volume of data traffic emanating from the growing number of broadband connections in homes and businesses, MANs and wide area networks, or WANs, will have to evolve at both the transport and switching layers. We believe that the CMOS fabrication process will be a key technology in this evolution by enabling the development of smaller optical modules and system components that cost less, consume less power and integrate greater functionality.

      Electronic components for optical communications are a natural extension of our large portfolio of high-speed LAN chips, one that will allow us to provide end-to-end semiconductor solutions across the WAN, MAN and LAN that increase the performance, intelligence and cost-effectiveness of broadband communications networks.

      We offer a portfolio of CMOS OC-48 and OC-192 transceiver and forward error correction solutions, chips for Synchronous Optical Networks and dense wave division multiplexing, or DWDM, applications, as well as a serial CMOS transceiver for 10 Gigabit Ethernet applications. Our use of the CMOS process allows substantially higher levels of integration and lower power consumption than competitive gallium arsenide, bipolar or silicon germanium solutions. Our DWDM transport processor combines an OC-192 transceiver, forward error correction, performance monitoring logic and G.709 digital wrapper into a single CMOS chip solution, occupying less than one half the space and consuming one-third the power of non-integrated solutions.

      In addition, our latest generation of switch devices is designed for the Metro access and edge markets. These devices feature support for IPv4 and IPv6, MPLS, Ethernet over MPLS, advanced quality of service, and sophisticated packet classification and traffic management. They are also scalable to large systems with external memory.

      The economies of scale derived from the Ethernet protocol have created emerging markets for Ethernet applications. Broadcom’s advanced switch products are being used in second and third generation cellular infrastructures, IP DSLAM, Metro Ethernet, blade servers in data centers, passive optical networks and residential Ethernet applications. In addition, our Ethernet transceivers are now being integrated into printers, gaming consoles, LAN on motherboard applications, audiovisual equipment and a number of other consumer devices.

      Most corporations use the Internet for the transmission of data among corporate offices and remote sites and for a variety of e-commerce and business-to-business applications. To secure corporate networks from intrusive attacks and provide for secure communications among corporate sites and remote users, an increasing amount of networking equipment will include technology to establish virtual private networks, or VPNs, which use the Internet Protocol security, or IPSec, protocol. In addition to VPNs, secure socket layer, commonly referred to as SSL, is used to secure sensitive information among users and service providers for e-commerce applications.

      Our SSL family of CryptoNetX^tm high-speed security processors and adapters for enterprise networks is enabling companies to guard against Internet attacks without compromising the speed and performance of their networks. Our PCI 2.2-compliant adapters provide a range of performance from 800 to 10,000 SSL transactions per second. Our current generation of CryptoNetX processors, introduced in 2005, combine IP security, SSL protocol processing, cryptographic acceleration and hardware-based identity management and authentication into a single-chip. These processors are built upon a proprietary, scalable silicon architecture that performs standards-compliant cryptographic functions at data rates ranging from a few Mbps to 10 Gbps full duplex. This architecture is being deployed across all of our product lines, addressing the entire broadband security network spectrum from residential applications to enterprise networking equipment. This scalable architecture allows us to

develop standalone security products for very high-speed networking applications and to integrate the IP security processor core into lower speed solutions for consumer products, such as cable and DSL modem applications.

      Broadband processors are high performance devices enabling high-speed computations that help identify, optimize and control the flow of data within the broadband network. The continued growth of IP traffic, coupled with the increasing demand for new and improved services and applications such as security, high-speed access and quality of service, is placing additional processing demands on next-generation networking and communications infrastructures. From the enterprise to access network to the service provider edge, networking equipment must be able to deliver wire-speed performance from the OC-3 standard, which transmits data at 155 Mbps, through the OC-192 standard, which transmits data at 10 Gbps, as well as the scalability and flexibility required to support next-generation services and features. In the enterprise and data center markets, server and storage applications require high computational performance to support complex protocol conversions, and services such as virtualization. With the migration from second generation cellular mobile systems, or 2G, to the third generation cellular mobile systems, or 3G, networks and mobile infrastructure equipment must be able to support higher bandwidth rates utilizing low power resource levels.

      Leveraging our expertise in high-performance, low-power very large scale integration design, we have developed a family of high performance, low power processor solutions designed specifically to meet the needs of next-generation networks. Our SiByte^® family of processors delivers four key features essential for today’s embedded broadband network processors: very high performance, low power dissipation, high integration of network-centric functions, and programmability based on an industry-standard instruction set architecture. At the heart of the SiByte family of processors is the SB-1 core, a MIPS^® 64-bit superscalar CPU capable of operating at frequencies of 400 MHz up to 1.2 GHz. These processors provide customers with a solution for high-speed network processing, including packet classification, queuing, forwarding and exception processing for wired and wireless networks. They enable complex applications such as deep content switching, routing and load balancing to be performed at wire speed. Our devices are also being designed for utilization in the fast growing network storage market, including network attached storage, storage area networking and RAID applications. Our general purpose processors are ideal for the complex protocol conversions, virtualization and proxy computations that storage applications require.

      Custom silicon products are devices for applications that customers are able to semi-customize by integrating their own intellectual property with our proprietary intellectual property cores. We have successfully deployed such devices into the LAN, WAN and PC markets. Our typical semi-custom devices are complex mixed-signal designs that leverage our advanced design processes.

     Mobile & Wireless Networking

      Broadcom’s mobile and wireless products allow manufacturers to develop leading edge mobile devices, enabling end-to-end wireless opportunities for the home, business and mobile markets. Products in this area include solutions in every major wireless market segment, including wireless local area, cellular and wide area, and personal area networking, as well as a comprehensive range of emerging next generation mobile technologies. Our portfolio of mobile and wireless products are enabling a new generation of portable devices including cellular handsets, mobile TV and game platforms and other wireless-enabled consumer electronics and peripherals, such as home gateways, printers, VoIP phones, PC cards and notebook computers.

      Wireless local area networking, also known as wireless LAN or Wi-Fi^® networking, allows equipment on a local area network to connect without the use of any cables or wires. Wireless local area networking adds the convenience of mobility to the powerful utility provided by high-speed data networks, and is a natural extension of broadband connectivity in the home and office.

      The first widely adopted standard for Wi-Fi technology was the IEEE 802.11b specification, which is the wireless equivalent of 10 Mbps Ethernet, allowing transfer speeds up to 11 Mbps and spanning distances of up to 100 meters. However, the 802.11g specification, which provides almost five times the data rate of 802.11b networks, has replaced 802.11b as the mainstream wireless technology for both business and consumer applications. The 802.11a standard applies to wireless LANs that operate in the 5 GHz frequency range with a maximum data rate of 54 Mbps. Wi-Fi technology was first utilized in applications such as computers and routers, and is now being embedded into a number of other electronic devices such as printers, digital cameras, gaming devices, PDAs, cellular phones and broadband modems.

      Our AirForce^tm wireless LAN product family consists of standards-based transceiver and wireless network process chips, chipsets and software that allow PCs and other devices, such as PDAs and cellular phones, to connect to wireless home or enterprise networks using 802.11b, 802.11g or 802.11a/g dual-band technology. Our 54g^® chipsets represent our implementation of the IEEE 802.11g wireless LAN standard that preserves full interoperability with 802.11b but provides connectivity at speeds of up to 54 Mbps.

      Continuous software and hardware performance enhancements have refined our wireless LAN product family, which now includes 125 High Speed Mode^tm technology, which increases the speed of wireless transmissions, BroadRange^tm technology, which extends Wi-Fi coverage range, and SecureEasySetup^tm, a software wizard that enables simple setup of a secure wireless network. All of our AirForce products also offer advanced security features, including certified support for Wi-Fi Protected Access^tm, or WPA, the Cisco Compatible Extensions, and hardware accelerated Advanced Encryption Standard, or AES, encryption. The entire AirForce family is comprised of all-CMOS solutions that are capable of self-calibrating based on usage temperature and other environmental conditions.

      The cellular handset market is transitioning from pure voice to broadband multimedia and data, transforming the traditional cellular phone from a voice-only device into a multimedia gateway. Products emerging from this transition will allow end-users to wirelessly download e-mail, view web pages, stream audio and video, and conduct videoconferences with cellular phones, PDAs, laptops and other mobile devices.

      The international Global System for Mobile Communication, or GSM, is currently the dominant standard for digital mobile communications. Enhanced data communications standards derived from GSM include General Packet Radio Services, or GPRS, Enhanced Data Rates for GSM Evolution, or EDGE, and Universal Mobile Telecommunications System, or UMTS. UMTS technologies, including Wideband Code Division Multiple Access (WCDMA), are typically referred to as 3G technologies. Each of these standards have extended GSM to enable packet-based “always on” Internet applications and more efficient data transport with higher transmission rates for a new generation of data services such as Internet browsing, 3-D gaming and multimedia messaging with rich graphics and audio content.

      We develop and market GSM, GPRS, EDGE and UMTS chipsets and reference designs with complete software and terminal solutions for use in cellular phones, cellular modem cards and wireless PDAs. Our cellular and wireless wide area networking products include baseband processor solutions, which integrate both mixed signal and digital functions on a single chip. We also provide a range of handset and cellular modem engineering design services to select customers, encompassing printed circuit board, RF and handset hardware, software development and integration, product verification and certification, and manufacturing support.

      The Bluetooth^® short-range wireless networking standard is a low-cost wire-replacement technology that enables connectivity among a wide variety of mainstream consumer electronic devices including PCs, mobile phones, PDAs, headsets and automotive electronics. Bluetooth short-range wireless connectivity enables personal area networking, or PAN, at speeds up to three Mbps, and can cover distances up to 30 feet. Bluetooth technology allows devices to automatically synchronize and exchange data with other Bluetooth-enabled devices without the need for wires, and enables wireless headset connections to cellular phones and wireless mouse and keyboard applications.

      Our Blutonium^® family of single-chip Bluetooth devices and software profiles and stacks provides a complete solution that enables manufacturers to add Bluetooth functionality to almost any electronic device with a minimal amount of development time and resources. Our Bluetooth solutions, all of which have been qualified by the Bluetooth Qualification Board to meet version 1.2 or 2.0 of the Bluetooth specification, are incorporated in PCs, PDAs, wireless mouse and keyboard applications, GSM/ GPRS/ UMTS and CDMA mobile phones, and other end products.

      Our Bluetooth solutions offer the industry’s highest levels of performance and integration with designs in standard CMOS, allowing them to be highly reliable while reducing manufacturing costs. In addition, we have developed InConcert^tm coexistence technology to allow products enabled with our AirForce Wi-Fi and Blutonium Bluetooth chips to collaboratively coexist within the same radio frequency.

      Multimedia is becoming increasingly prevalent in handheld devices such as cellular phones. To support new multimedia features including imaging, graphics, camera image capture, audio capture, music playback, music streaming, video streaming, video capture, gaming, mobile TV, and more, Broadcom offers a new line of video and multimedia processors based on a low power, high performance architecture referred to as Videocore^®.

      Unlike hard-wired processor cores, Videocore devices are built to provide customers the benefit of total software flexibility and programmability. Videocore supports a wide variety of standard and non-standard software and codecs including, but not limited to, extremely low power implementations of MPEG-4 and H.264 for video, MP3 and AAC for audio, and MIDI. Providing the base codecs to our key customers allows them to rapidly develop next-generation products while maintaining backward compatibility of applications software. Because the fully programmable architecture of our mobile multimedia processors enables a complete range of multimedia functions to be executed in software, the system designer can quickly move to production without the costly overhead and time-to-market uncertainty of hardware accelerators. The scalability of the architecture allows features or new industry standard codecs to be added shortly before product release or through firmware upgrades in the field.

      Our Videocore processors can be used either as standalone multimedia processors or as co-processors in conjunction with a host processor such as a GSM, EDGE or UMTS baseband. Videocore-enabled video and multimedia processors for advanced handheld multimedia products are designed and optimized for video record/playback, mobile TV and 3D mobile gaming. Videocore technology is designed to create power efficient, high performance processors focused on multimedia for cellular handsets, but we are also deploying Videocore processors into a number of other portable applications, where battery life and performance are important.

      Voice over Internet Protocol refers to the transmission of voice over any IP packet-based network. VoIP is stimulating dramatic changes in the traditional public switched and enterprise telephone networks. Packet-based networks provide significant economic advantages over traditional circuit-switched voice networks. The trend to IP networks for voice has been driven by the significant build out of the Internet and deregulation of long distance and local phone service.

      The enterprise equipment market is being radically affected by the convergence of corporate data networks and voice communications. A host of new enterprise services can be enabled when a LAN-based Ethernet switching infrastructure is used to carry both data and voice. We provide both silicon and software to enable our enterprise equipment customers to provide cost-effective IP phones.

      Within residential markets, VoIP is gaining momentum as a viable alternative to traditional public telephone networks. In addition to enabling cost savings for long-distance calls, VoIP creates a number of consumer product opportunities and applications for equipment vendors and service providers.

      IP Phone Processors. Our IP phone silicon and software solutions integrate packet processing, voice processing and switching technologies to provide the quality of service, high fidelity and reliability necessary for enterprise telephony applications. Our processors have enabled the development of new XML-based IP phones

that can perform a wide variety of functions that traditional phones cannot support. Originally focused on Fast Ethernet, these processors now include support for Gigabit Ethernet as well to support the growing deployment of Gigabit Ethernet throughout enterprises.

      Residential Terminal Adapter Processors. Our terminal adapter VoIP solutions enable existing analog phones to be connected to broadband modems via Ethernet. These products support residential VoIP services that are now being offered by a variety of broadband service providers.

      Wi-Fi Phone Processors. In 2004 we introduced our first Wi-Fi phone processor that enables the development of next generation, cordless phone replacement devices. These Wi-Fi phones are beginning to be deployed in both enterprises and homes as the use of broadband and Wi-Fi applications increases in these markets.

      All of our VoIP processors support our BroadVoice^® technology, which features a wideband high fidelity mode that significantly improves the clarity and quality of telephony voice service.

Reference Platforms

      We also develop reference platforms designed around our integrated circuit products that represent example system-level applications for incorporation into our customers’ equipment. These reference platforms generally include a fairly extensive suite of software drivers as well as protocol and application layer software to assist our customers in developing their own end products. By providing these reference platforms, we can assist our customers in achieving easier and faster transitions from initial prototype designs to final production releases. These reference platforms enhance the customer’s confidence that our products will meet its market requirements and product introduction schedules.

Customers and Strategic Relationships

      We sell our products to leading manufacturers of wired and wireless communications equipment in each of our target markets. Because we leverage our technologies across different markets, certain of our integrated circuits may be incorporated into equipment used in several markets.

      Customers currently shipping wired and wireless communications equipment incorporating our products include Alcatel, Apple, Askey, Cisco, D-Link, Dell, Echostar, Hewlett-Packard, IBM, Motorola, Nortel Networks, Samsung, Scientific-Atlanta, Sony Ericsson, Thomson CE and 3Com, among others. To meet the current and future technical needs in our target markets, we have also established strategic relationships with multiservice operators that provide wired and wireless communications services to consumers and businesses.

      As part of our business strategy, we periodically establish strategic relationships with certain key customers. In September 1997 we entered into a development, supply and license agreement with General Instrument, now a wholly-owned subsidiary of Motorola, which provided that we would develop and supply chips for General Instrument’s digital cable set-top boxes. We subsequently modified that agreement to include sales of our cable modem chips, and have entered into further amendments from time to time to amend and/or extend General Instrument’s minimum purchase requirements of chips for cable modems and digital set-top boxes.

      A small number of customers have historically accounted for a substantial portion of our net revenue. Sales to our five largest customers represented approximately 45.3%, 51.1% and 51.6% of our net revenue in 2005, 2004 and 2003, respectively. See Note 13 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report.

      We expect that our key customers will continue to account for a substantial portion of our net revenue in 2006 and in the foreseeable future. These customers and their respective contributions to our net revenue have varied and will likely continue to vary from period to period. We typically sell products pursuant to purchase orders that customers can generally cancel or defer on short notice without incurring a significant penalty, and currently do not have agreements with any of our key customers that contain long-term commitments to purchase specified volumes of our products.

Core Technologies

      Using proprietary technologies and advanced design methodologies, we design, develop and supply complete system-on-a-chip solutions and related hardware and software applications for our target markets. Our proven system-on-a-chip design methodology has enabled us to be first to market with advanced chips that are highly integrated and cost-effective, and that facilitate the easy integration of our customers’ intellectual property. Our design methodology leverages industry-standard, state-of-the-art electronic design automation tools, and generally migrates easily to new silicon processes and technology platforms. It also allows for the easy integration of acquired or licensed technology, providing customers with a broad range of silicon options with differentiated networking and performance features.

      We believe our key competitive advantages include superior engineering execution and our broad base of core technologies encompassing the complete design space from systems to silicon. We have developed and continue to build on the following technology foundations:

Research and Development

      We have assembled a large team of experienced engineers and technologists, many of whom are leaders in their particular field or discipline. As of December 31, 2005 we had 3,011 research and development employees, the majority of whom hold advanced degrees. Our work force includes 356 employees with Ph.Ds. These key employees are involved in advancing our core technologies, as well as applying them to our product development activities. Because the system-on-a-chip solutions for many of our target markets benefit from the same underlying core technologies, we are able to address a wide range of wired and wireless communications markets with a relatively focused investment in research and development.

      We believe that the achievement of higher levels of integration and the timely introduction of new products in our target markets is essential to our growth. Our current plans are to maintain our significant research and development staffing levels in 2006 and for the foreseeable future. In addition to our principal design facilities in Irvine, California and Santa Clara County, California, we have design centers in Tempe, Arizona; San Diego County, California; Colorado Springs, Fort Collins, and Longmont, Colorado; Duluth, Georgia; Germantown, Maryland; Andover, Massachusetts; Nashua, New Hampshire; Matawan, New Jersey; Austin, Texas and Seattle, Washington, among other locations. Internationally, we also have design facilities in Belgium, Canada, China, Denmark, France, Greece, India, Israel, Japan, Korea, the Netherlands, Singapore, Taiwan and the United Kingdom, among other locations. We anticipate establishing additional design centers in the United States and in other countries.

      Our research and development expense was $610.1 million, $495.1 million and $434.0 million in 2005, 2004 and 2003, respectively. In addition, for employees engaged in research and development, we had non-cash stock-based compensation expense and stock option exchange expense of $40.6 million, $58.6 million and $384.1 million in 2005, 2004 and 2003, respectively. We also had amortization of purchased intangible assets related to research and development of $0.8 million in 2003. We had no amortization of purchased intangible assets related to research and development in 2005 or 2004.

Manufacturing

      We manufacture our products using standard CMOS process techniques. The standard nature of these processes permits us to engage independent silicon foundries to fabricate our integrated circuits. By subcontracting our manufacturing requirements, we are able to focus our resources on design and test applications where we believe we have greater competitive advantages. This strategy also eliminates the high cost of owning and operating semiconductor wafer fabrication facilities.

      Our operations and quality engineering team closely manages the interface between manufacturing and design engineering. While our design methodology typically creates a smaller than average die for a given function, it also generates full-custom integrated circuit designs. As a result, we are responsible for the complete functional and parametric performance testing of our devices, including quality. We employ a fully staffed operations and quality organization similar to that of a vertically integrated semiconductor manufacturer. We also arrange with our foundries to have online work-in-progress control. Our approach makes the manufacturing subcontracting process transparent to our customers.

      We depend on five independent foundry subcontractors located in Asia to manufacture substantially all of our products. Our key silicon foundries are Taiwan Semiconductor Manufacturing Corporation in Taiwan, Chartered Semiconductor Manufacturing in Singapore, Semiconductor Manufacturing International Corporation in China, Silterra Malaysia Sdn. Bhd. in Malaysia and United Microelectronics Corporation in Taiwan, several of which maintain multiple fabrication facilities in various locations. Any inability of one of our five independent foundry subcontractors to provide the necessary capacity or output for our products could result in significant production delays and could materially and adversely affect our business, financial condition and results of operations. While we currently believe we have adequate capacity to support our current sales levels, we continue to work with our existing foundries to obtain more production capacity, and we intend to qualify new foundries to provide additional production capacity. It is possible that from time to time adequate foundry capacity may not be available on acceptable terms, if at all. In the event a foundry experiences financial difficulties, or if a foundry suffers any damage to or destruction of its facilities, or in the event of any other disruption of foundry capacity, we may not be able to qualify alternative manufacturing sources for existing or new products in a timely manner.

      Our products are currently fabricated with .35 micron, quad layer metal; .22 micron, five layer metal; .18 micron, five and six layer metal; and .13 micron, six and seven layer metal structures. We continuously evaluate the benefits, on a product-by-product basis, of migrating to smaller geometry process technologies, and have begun to migrate certain products to 90 and 65 nanometer, seven to eight layer metal, feature sizes. Although our experience to date with the migration of products to smaller processes geometries has been predominantly favorable, we could experience difficulties in future process migration. Other companies in our industry have experienced difficulty transitioning to new manufacturing processes and, consequently, have suffered reduced yields or delays in product deliveries. We believe that the transition of our products to smaller geometries will be important for us to remain competitive. Our business, financial condition and results of operations could be materially and adversely affected if any such transition is substantially delayed or inefficiently implemented.

      Our wafer probe testing is conducted by either our independent foundries or independent wafer probe test subcontractors. Following completion of the wafer probe tests, the die are assembled into packages and the finished products are tested by one of our seven key subcontractors: ASAT Ltd. in Hong Kong; STATSChipac in Singapore, Korea, Malaysia and China; Siliconware Precision in Taiwan; United Test and Assembly Center in Singapore; Signetics in Korea; Amkor in Korea, Philippines and China; and Global Advance Packaging & Test in China. While we have not experienced material disruptions in supply from assembly subcontractors to date, we and others in our industry have experienced shortages in the supply of packaging materials from time to time, and we could experience shortages or assembly problems in the future. The availability of assembly and testing services from these subcontractors could be materially and adversely affected in the event a subcontractor

experiences financial difficulties, or if a subcontractor suffers any damage to or destruction of its facilities, or in the event of any other disruption of assembly and testing capacity.

      Manufacturers of wired and wireless communications equipment demand high quality and reliable semiconductors for incorporation into their products. We focus on product reliability from the initial stage of the design cycle through each specific design process, including layout and production test design. In addition, we subject our designs to in-depth circuit simulation at temperature, voltage and processing extremes before initiating the manufacturing process.

      We prequalify each assembly and foundry subcontractor. This prequalification process consists of a series of industry standard environmental product stress tests, as well as an audit and analysis of the subcontractor’s quality system and manufacturing capability. We also participate in quality and reliability monitoring through each stage of the production cycle by reviewing electrical and parametric data from our wafer foundry and assembly subcontractors. We closely monitor wafer foundry production to ensure consistent overall quality, reliability and yield levels. In cases where we purchase wafers on a fixed price-basis, any improvement in yields can reduce our cost per chip.

      As part of our total quality program, we received ISO 9002 certification, a comprehensive International Standards Organization specified quality system, for our Singapore facility. All of our principal independent foundries and package assembly facilities are currently ISO 9001 certified.

      While every effort is made to monitor and meet the quality requirements of our customers, including the use of industry standard procedures and other additional methods, it is possible that an unanticipated quality problem may result in interruptions or delays in product shipments. In that event, our reputation may be damaged and customers may be reluctant to buy our products, and we may be required to apply significant capital and other resources to remedy any quality problem with our products.

      We are also focusing on managing the environmental impact of our products. Our manufacturing flow is registered to ISO 14000, the international standards related to environmental management, by our subcontractors. Due to environmental concerns, the need for lead-free solutions in electronic components and systems is receiving increasing attention within the semiconductor industry and many companies are moving towards becoming compliant with the Restriction of Hazardous Substances Directive, the European legislation that restricts the use of a number of substances, including lead, effective July 2006. We believe that our products are compliant with the RoHS Directive and that materials will be available to meet these emerging regulations. However, it is possible that unanticipated supply shortages or delays may occur as a result of these new regulations.

      Initially we distributed products to our customers through an operations and distribution center located in Irvine, California. In 1999 we established an international distribution center in Singapore. This facility put us closer to our suppliers and many key customers and improved our ability to meet customers’ needs. Our Irvine facility continues to ship products to U.S. destinations, while our Singapore facility distributes products to international destinations. Net revenue derived from actual shipments to international destinations, primarily in Asia, represented approximately 84.5%, 79.0% and 77.7% of our net revenue in 2005, 2004 and 2003, respectively.

Sales and Marketing

      Our sales and marketing strategy is to achieve design wins with technology leaders in each of our targeted wired and wireless communications markets by providing quality, state-of-the-art products, superior engineering execution and superior sales, field application and engineering support. We market and sell our products in the United States through a direct sales force, distributors and manufacturers’ representatives. The majority of our

sales occur through our direct sales force, which is based in offices located in California, Colorado, Florida, Georgia, Illinois, Maine, Maryland, Massachusetts, Michigan, New York, New Jersey, North Carolina, Ohio, Texas and Virginia. We have engaged independent distributors, Arrow Electronics and Avnet, Inc., to service the North American and South American markets.

      We dedicate sales managers to principal customers to promote close cooperation and communication. We also provide our customers with reference platform designs for most products. We believe this enables our customers to achieve easier and faster transitions from the initial prototype designs through final production releases. We believe these reference platform designs also significantly enhance customers’ confidence that our products will meet their market requirements and product introduction schedules.

      We market and sell our products internationally through regional offices located in Canada, China, Finland, France, Germany, Japan, Korea, the Netherlands, Singapore, Sweden, Taiwan and the United Kingdom, among other locations, as well as through a network of independent distributors and representatives in Australia, Canada, Germany, Hong Kong, India, Israel, Japan, Korea, Singapore and Taiwan. We select these independent entities based on their ability to provide effective field sales, marketing communications and technical support to our customers. All international sales to date have been denominated in U.S. dollars. For information regarding revenue from independent customers by geographic area, see Note 13 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report.

Backlog

      Our sales are made primarily pursuant to standard purchase orders for delivery of products. Due to industry practice that allows customers to cancel or change orders with limited advance notice prior to shipment, we do not believe that backlog is a reliable indicator of future revenue levels.

Competition

      Wired and wireless communications markets and the semiconductor industry are intensely competitive and are characterized by rapid change, evolving standards, short product life cycles and price erosion. We believe that the principal factors of competition for integrated circuit providers in our target markets include:

We believe that we compete favorably with respect to each of these factors.

      We compete with a number of major domestic and international suppliers of integrated circuits and related applications in our target markets. We also compete with suppliers of system-level and motherboard-level

solutions incorporating integrated circuits that are proprietary or sourced from manufacturers other than Broadcom. This competition has resulted and will continue to result in declining average selling prices for our products. In all of our target markets, we also may face competition from newly established competitors, suppliers of products based on new or emerging technologies, and customers that choose to develop their own silicon solutions. We also expect to encounter further consolidation in the markets in which we compete.

      Many of our competitors operate their own fabrication facilities and have longer operating histories and presence in key markets, greater name recognition, larger customer bases and significantly greater financial, sales and marketing, manufacturing, distribution, technical and other resources than we do. As a result, these competitors may be able to adapt more quickly to new or emerging technologies and changes in customer requirements or to devote greater resources to the promotion and sale of their products. Current and potential competitors have established or may establish financial or strategic relationships among themselves or with existing or potential customers, resellers or other third parties, and may refuse to provide us with information necessary to permit the interoperability of our products with theirs. Accordingly, it is possible that new competitors or alliances among competitors could emerge and rapidly acquire significant market share. In addition, competitors may develop technologies that more effectively address our markets with products that offer enhanced features, lower power requirements or lower costs. Increased competition could result in pricing pressures, decreased gross margins and loss of market share and may materially and adversely affect our business, financial condition and results of operations.

Intellectual Property

      Our success and future revenue growth depend, in part, on our ability to protect our intellectual property. We rely primarily on patent, copyright, trademark and trade secret laws, as well as nondisclosure agreements and other methods, to protect our proprietary technologies and processes. However, these measures may not provide meaningful protection for our intellectual property.

      We hold more than 1,250 U.S. patents and have filed more than 3,600 additional U.S. patent applications. We may not receive any additional patents as a result of these applications or future applications. Even if additional patents are issued, any claims allowed may not be sufficiently broad to protect our technology. In addition, any existing or future patents could be challenged, invalidated or circumvented, and any rights granted under such patents may not provide us with meaningful protection. We may not have foreign patents or pending applications corresponding to our U.S. patents and applications. Even if foreign patents are granted, effective enforcement in foreign countries may not be available. The failure of any patents to adequately protect our technology would make it easier for our competitors to offer similar products. In connection with our participation in the development of various industry standards, we may be required to license certain of our patents to other parties, including competitors, that develop products based upon the adopted industry standards.

      We also generally enter into confidentiality agreements with our employees and strategic partners, and typically control access to and distribution of our documentation and other proprietary information. Despite these precautions, it may be possible for a third party to copy or otherwise obtain and use our products, services or technology without authorization, to develop similar technology independently, or to design around our patents. In addition, effective copyright, trademark and trade secret protection may not be available or may be limited in certain foreign countries. We have also entered into agreements with certain of our customers and granted these customers the right to use our proprietary technology in the event we default in our contractual obligations, including product supply obligations, and fail to cure the default within a specified time period. In addition, we often incorporate the intellectual property of our strategic customers into our designs, and therefore have certain obligations with respect to the non-use and non-disclosure of their intellectual property. It is possible that the steps taken by us to prevent misappropriation or infringement of our intellectual property or our customers’ intellectual property may not be successful. Moreover, we are currently engaged in litigation and may need to engage in additional litigation to enforce our intellectual property rights or the rights of our customers, to protect our trade secrets, or to determine the validity and scope of proprietary rights of others, including our customers. Such litigation will result in substantial costs and diversion of our resources and could materially and adversely affect our business, financial condition and results of operations.

      Companies in the semiconductor industry often aggressively protect and pursue their intellectual property rights. From time to time, we have received, and may continue to receive, notices that claim we have infringed upon, misappropriated or misused other parties’ proprietary rights. Moreover, we have in the past and continue to be engaged in litigation with parties who claim that we have infringed their patents or misappropriated or misused their trade secrets. We may also be sued by parties who may seek to invalidate one or more of our patents. Any intellectual property claims may materially and adversely affect our business, financial condition and results of operations. For example, in a patent or trade secret action, a court could issue a preliminary or permanent injunction that would require us to withdraw or recall certain products from the market or to redesign certain products offered for sale or under development. In addition, we may be liable for damages for past infringement and royalties for future use of the technology. We may also have to indemnify certain customers and strategic partners under our agreements with such parties if a third party alleges or if a court finds that our products or activities have infringed upon, misappropriated or misused another party’s proprietary rights. Even if claims against us are not valid or successfully asserted, the defense of these claims could result in significant costs and a diversion of management and personnel resources. In any of these events, our business, financial condition and results of operations may be materially and adversely affected. Additionally, we have sought and may in the future seek to obtain a license under a third party’s intellectual property rights and have granted and may grant a license to certain of our intellectual property rights to a third party in connection with a cross-license agreement or a settlement of claims or actions asserted against us. However, we may not be able to obtain a license on commercially reasonable terms, if at all.

Employees

      As of December 31, 2005 we had 4,287 full-time, contract and temporary employees, including 3,011 individuals engaged in research and development, 514 engaged in sales and marketing, 313 engaged in manufacturing operations, and 449 engaged in finance, legal and general administration activities. Our employees are not represented by any collective bargaining agreement, and we have never experienced a work stoppage. We believe our employee relations are good.

      Before deciding to purchase, hold or sell our common stock, you should carefully consider the risks described below in addition to the other cautionary statements and risks described elsewhere, and the other information contained, in this Report and in our other filings with the SEC, including our subsequent reports on Forms 10-Q and 8-K. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business. If any of these known or unknown risks or uncertainties actually occurs with material adverse effects on Broadcom, our business, financial condition and results of operations could be seriously harmed. In that event, the market price for our Class A common stock will likely decline, and you may lose all or part of your investment.

Our quarterly operating results may fluctuate significantly. As a result, we may fail to meet the expectations of securities analysts and investors, which could cause our stock price to decline.

      Our quarterly net revenue and operating results have fluctuated significantly in the past and are likely to continue to vary from quarter to quarter due to a number of factors, many of which are not within our control. If our operating results do not meet the expectations of securities analysts or investors, who may derive their expectations by extrapolating data from recent historical operating results, the market price of our Class A common stock will likely decline. Fluctuations in our operating results may be due to a number of factors, including, but not limited to, those listed below and those identified throughout this “Risk Factors” section:

      We expect new product lines to continue to account for a high percentage of our future sales. Some of these markets are immature and/or unpredictable or are new markets for Broadcom, and we cannot assure you that these markets will develop into significant opportunities or that we will continue to derive significant revenue from these markets. Based on the limited amount of historical data available to us, it is difficult to anticipate our future revenue streams from, and the sustainability of, such newer markets.

      Additionally, as an increasing number of our chips are being incorporated into consumer products, such as desktop and notebook computers, cellular phones and other mobile communication devices, other wireless-enabled consumer electronics, and satellite and digital cable set-top boxes, we anticipate greater seasonality and fluctuations in the demand for our products, which may result in greater variations in our quarterly operating results.

      Due to all of the foregoing factors, and the other risks discussed in this Report, you should not rely on quarter-to-quarter comparisons of our operating results as an indicator of future performance.

Changes in the accounting treatment of stock-based awards will adversely affect our reported results of operations.

      In December 2004 the Financial Accounting Standards Board, or FASB, issued Statement of Financial Accounting Standards, or SFAS, No. 123 (revised 2004), Share-Based Payment, or SFAS 123R, which is a revision of SFAS No. 123, Accounting for Stock-Based Compensation, or SFAS 123. SFAS 123R requires all share-based payments to employees, including grants of employee stock options, to be recognized in the financial statements based on their grant date fair values and does not allow the previously permitted disclosure-only method as an alternative to financial statement recognition. Effective January 1, 2006 we adopted SFAS 123R.

      The adoption of the SFAS 123R fair value method will have a significant adverse impact on our reported results of operations because the stock-based compensation expense will be charged directly against our reported earnings. The balance of unearned stock-based compensation to be expensed in the period 2006 through 2009 related to share-based awards unvested at December 31, 2005, as previously calculated under the disclosure-only requirements of SFAS 123, is approximately $710.0 million. The weighted-average period over which the

unearned stock-based compensation is expected to be recognized is approximately two years. If there are any modifications or cancellations of the underlying unvested securities, we may be required to accelerate, increase or cancel any remaining unearned stock-based compensation expense. To the extent that we grant additional equity securities to employees or assume unvested securities in connection with any acquisitions, our stock-based compensation expense will be increased by the additional unearned compensation resulting from those additional grants or acquisitions. We anticipate we will grant additional employee stock options and restricted stock units in the second quarter of 2006 as part of our regular annual equity compensation focal review program. The fair value of these grants is not included in the amount above, as the impact of these grants cannot be predicted at this time because it will depend on the number of share-based payments granted as part of the focal review program and the then current fair values.

      Had we adopted SFAS 123R in prior periods, the magnitude of the impact of that standard on our results of operations would have approximated the impact of SFAS 123 assuming the application of the Black-Scholes option pricing model as described in the disclosure of pro forma net income (loss) and pro forma net income (loss) per share in Note 1 of Notes to Consolidated Financial Statements. SFAS 123R also requires the benefits of tax deductions in excess of recognized compensation cost to be reported as a financing cash flow, rather than as an operating cash flow as required under current literature. This requirement may reduce net operating cash flows and increase net financing cash flows in periods after its adoption.

Our operating results may be adversely impacted by worldwide political and economic uncertainties and specific conditions in the markets we address, including the cyclical nature of and volatility in the semiconductor industry. As a result, the market price of our Class A common stock may decline.

      We operate primarily in the semiconductor industry, which is cyclical and subject to rapid change and evolving industry standards. From time to time, the semiconductor industry has experienced significant downturns. These downturns are characterized by decreases in product demand, excess customer inventories, and accelerated erosion of prices. These factors could cause substantial fluctuations in our revenue and in our results of operations. Any downturns in the semiconductor industry may be severe and prolonged, and any failure of the industry or wired and wireless communications markets to fully recover from downturns could seriously impact our revenue and harm our business, financial condition and results of operations. The semiconductor industry also periodically experiences increased demand and production capacity constraints, which may affect our ability to ship products. Accordingly, our operating results may vary significantly as a result of the general conditions in the semiconductor industry, which could cause large fluctuations in our stock price.

      Additionally, in the last three years, general worldwide economic conditions have experienced a downturn due to slower economic activity, concerns about inflation and deflation, increased energy costs, decreased consumer confidence, reduced corporate profits and capital spending, adverse business conditions and liquidity concerns in the wired and wireless communications markets, the ongoing effects of the war in Iraq, recent international conflicts and terrorist and military activity, and the impact of natural disasters and public health emergencies. These conditions make it extremely difficult for our customers, our vendors and us to accurately forecast and plan future business activities, and they could cause U.S. and foreign businesses to slow spending on our products and services, which would delay and lengthen sales cycles. We experienced a slowdown in orders and a reduction in net revenue in the fourth quarter of 2004 that we believe was attributable in substantial part to excess inventory held by certain of our customers, and we may experience a similar slowdown in the future. We cannot predict the timing, strength or duration of any economic recovery, worldwide, or in the wired and wireless communications markets. If the economy or the wired and wireless communications markets in which we operate do not continue at their present levels, our business, financial condition and results of operations will likely be materially and adversely affected.

If we fail to appropriately scale our operations in response to changes in demand for our existing products and services or to the demand for new products requested by our customers, our business could be materially and adversely affected.

      To achieve our business objectives, we anticipate that we will need to continue to expand. We have experienced a period of rapid growth and expansion in the past. Through internal growth and acquisitions, we

significantly increased the scope of our operations and expanded our workforce from 2,580 employees, including contractors, as of December 31, 2002 to 4,287 employees, including contractors, as of December 31, 2005. Nonetheless, we may not be able to expand our workforce and operations in a sufficiently timely manner to respond effectively to changes in demand for our existing products and services or to the demand for new products requested by our customers. In that event, we may be unable to meet competitive challenges or exploit potential market opportunities, and our current or future business could be materially and adversely affected. Conversely, if we expand our operations and workforce too rapidly in anticipation of increased demand for our products, and such demand does not materialize at the pace at which we expected, the rate of increase in our operating expenses may exceed the rate of increase in our revenue, which would adversely affect our operating results.

      Our past growth has placed, and any future growth is expected to continue to place, a significant strain on our management personnel, systems and resources. To implement our current business and product plans, we will need to continue to expand, train, manage and motivate our workforce. All of these endeavors will require substantial management effort. Although we have implemented a new enterprise resource planning, or ERP, system to help us improve our planning and management processes and a new human resources management, or HRM, system, we anticipate that we will also need to continue to implement a variety of new and upgraded operational and financial systems, as well as additional procedures and other internal management systems. In addition, to support our growth we recently signed a lease agreement under which we will relocate our headquarters and Irvine operations to new, larger facilities that will enable us to centralize all of our Irvine employees and operations on one campus. This relocation is currently anticipated to begin in the first quarter of 2007. We may also engage in other relocations of our employees or operations from time to time. Such relocations could result in temporary disruptions of our operations or a diversion of our management’s attention and resources. If we are unable to effectively manage our expanding operations, we may be unable to scale our business quickly enough to meet competitive challenges or exploit potential market opportunities, or conversely, we may scale our business too quickly and the rate of increase in our expenses may exceed the rate of increase in our revenue, either of which would materially and adversely affect our current or future business.

Intellectual property risks and third party claims of infringement, misappropriation of proprietary rights or other claims against us could adversely affect our ability to market our products, require us to redesign our products or seek licenses from third parties, and seriously harm our operating results. In addition, the defense of such claims could result in significant costs and divert the attention of our management or other key employees.

      Companies in and related to the semiconductor industry often aggressively protect and pursue their intellectual property rights. There are often intellectual property risks associated with developing and producing new products and entering new markets, and we may not be able to obtain, at reasonable cost and upon commercially reasonable terms, licenses to intellectual property of others that is alleged to read on such new or existing products. From time to time, we have received, and may continue to receive, notices that claim we have infringed upon, misappropriated or misused other parties’ proprietary rights. Moreover, in the past we have been and we currently are engaged in litigation with parties that claim that we infringed their patents or misappropriated or misused their trade secrets. In addition, we or our customers may be sued by other parties that claim that our products have infringed their patents or misappropriated or misused their trade secrets, or which may seek to invalidate one or more of our patents. An adverse determination in any of these types of disputes could prevent us from manufacturing or selling some of our products, limit or restrict the type of work that employees involved in such litigation may perform for Broadcom, increase our costs of revenue and expose us to significant liability. Any of these claims may materially and adversely affect our business, financial condition and results of operations. For example, in a patent or trade secret action, a court could issue a preliminary or permanent injunction that would require us to withdraw or recall certain products from the market, redesign certain products offered for sale or under development, or restrict employees from performing work in their areas of expertise. We may also be liable for damages for past infringement and royalties for future use of the technology, and we may be liable for treble damages if infringement is found to have been willful. In addition, governmental agencies may commence investigations or criminal proceedings against our employees, former employees and/or the Company relating to claims of misappropriation or misuse of another party’s proprietary

rights. We may also have to indemnify some customers and strategic partners under our agreements with such parties if a third party alleges or if a court finds that our products or activities have infringed upon, misappropriated or misused another party’s proprietary rights. We have received requests from certain customers and strategic partners to include increasingly broad indemnification provisions in our agreements with them. These indemnification provisions may, in some circumstances, extend our liability beyond the products we provide to include liability for combinations of components or system level designs and consequential damages and/or lost profits. Even if claims against us are not valid or successfully asserted, these claims could result in significant costs and a diversion of the attention of management and other key employees to defend. Additionally, we have sought and may in the future seek to obtain a license under a third party’s intellectual property rights and have granted and may in the future grant a license to certain of our intellectual property rights to a third party in connection with a cross-license agreement or a settlement of claims or actions asserted against us. However, we may not be able to obtain such a license on commercially reasonable terms.

      Our products may contain technology provided to us by other parties including customers. We may have little or no ability to determine in advance whether such technology infringes the intellectual property rights of a third party. Our suppliers and licensors may not be required to indemnify us in the event that a claim of infringement is asserted against us, or they may be required to indemnify us only up to a maximum amount, above which we would be responsible for any further costs or damages.

We may not be able to adequately protect or enforce our intellectual property rights, which could harm our competitive position.

      Our success and future revenue growth will depend, in part, on our ability to protect our intellectual property. We primarily rely on patent, copyright, trademark and trade secret laws, as well as nondisclosure agreements and other methods, to protect our proprietary technologies and processes. Despite our efforts to protect our proprietary technologies and processes, it is possible that competitors or other unauthorized third parties may obtain, copy, use or disclose our technologies and processes. We hold more than 1,250 U.S. patents and have filed more than 3,600 additional U.S. patent applications. However, we cannot assure you that any additional patents will be issued. Even if a new patent is issued, the claims allowed may not be sufficiently broad to protect our technology. In addition, any of our existing or future patents may be challenged, invalidated or circumvented. As such, any rights granted under these patents may not provide us with meaningful protection. We may not have foreign patents or pending applications corresponding to our U.S. patents and applications. Even if foreign patents are granted, effective enforcement in foreign countries may not be available. If our patents do not adequately protect our technology, our competitors may be able to offer products similar to ours. Our competitors may also be able to develop similar technology independently or design around our patents. Some or all of our patents have in the past been licensed and likely will in the future be licensed to certain of our competitors through cross-license agreements. Moreover, because we have participated in developing various industry standards, we may be required to license some of our patents to others, including competitors, who develop products based on those standards.

      Certain of our software (as well as that of our customers) may be derived from so-called “open source” software that is generally made available to the public by its authors and/or other third parties. Such open source software is often made available to us under licenses, such as the GNU General Public License, or GPL, which impose certain obligations on us in the event we were to distribute derivative works of the open source software. These obligations may require us to make source code for the derivative works available to the public, and/or license such derivative works under a particular type of license, rather than the forms of license customarily used to protect our intellectual property. In addition, there is little or no legal precedent for interpreting the terms of certain of these open source licenses, including the determination of which works are subject to the terms of such licenses. While we believe we have complied with our obligations under the various applicable licenses for open source software, in the event the copyright holder of any open source software were to successfully establish in court that we had not complied with the terms of a license for a particular work, we could be required to release the source code of that work to the public and/or stop distribution of that work. With respect to our proprietary software, we generally license such software under terms that prohibit combining it with open source software as described above. Despite these restrictions, parties may combine Broadcom proprietary software with open source

software without our authorization, in which case we might nonetheless be required to release the source code of our proprietary software.

      We generally enter into confidentiality agreements with our employees, consultants and strategic partners. We also try to control access to and distribution of our technologies, documentation and other proprietary information. Despite these efforts, internal or external parties may attempt to copy, disclose, obtain or use our products, services or technology without our authorization. Also, former employees may seek employment with our business partners, customers or competitors, and we cannot assure you that the confidential nature of our proprietary information will be maintained in the course of such future employment. Additionally, current, departing or former employees or third parties could attempt to penetrate our computer systems and networks to misappropriate our proprietary information and technology or interrupt our business. Because the techniques used by computer hackers and others to access or sabotage networks change frequently and generally are not recognized until launched against a target, we may be unable to anticipate, counter or ameliorate these techniques. As a result, our technologies and processes may be misappropriated, particularly in countries where laws may not protect our proprietary rights as fully as in the United States.

      In addition, some of our customers have entered into agreements with us that grant them the right to use our proprietary technology if we ever fail to fulfill our obligations, including product supply obligations, under those agreements, and if we do not correct the failure within a specified time period. Moreover, we often incorporate the intellectual property of strategic customers into our own designs, and have certain obligations not to use or disclose their intellectual property without their authorization.

      We cannot assure you that our efforts to prevent the misappropriation or infringement of our intellectual property or the intellectual property of our customers will succeed. We have in the past been and currently are engaged in litigation to enforce or defend our intellectual property rights, protect our trade secrets, or determine the validity and scope of the proprietary rights of others, including our customers. Such litigation (and the settlement thereof) has been and will likely continue to be very expensive and time consuming. Additionally, any litigation can divert the attention of management and other key employees from the operation of the business, which could negatively impact our business and results of operations.

Because we depend on a few significant customers for a substantial portion of our revenue, the loss of a key customer could seriously impact our revenue and harm our business. In addition, if we are unable to continue to sell existing and new products to our key customers in significant quantities or to attract new significant customers, our future operating results could be adversely affected.

      We have derived a substantial portion of our past revenue from sales to a relatively small number of customers. As a result, the loss of any significant customer could materially and adversely affect our financial condition and results of operations.

      Sales to our five largest customers, including sales to their manufacturing subcontractors, represented approximately 45.3%, 51.1% and 51.6% of our net revenue in 2005, 2004 and 2003, respectively. We expect that our largest customers will continue to account for a substantial portion of our net revenue in 2006 and for the foreseeable future. The identities of our largest customers and their respective contributions to our net revenue have varied and will likely continue to vary from period to period.

      We may not be able to maintain or increase sales to certain of our key customers for a variety of reasons, including the following:

      In addition, our longstanding relationships with some larger customers may also deter other potential customers who compete with these customers from buying our products. To attract new customers or retain existing customers, we may offer certain customers favorable prices on our products. We may have to offer the same lower prices to certain of our customers who have contractual “most favored nation” pricing arrangements. In that event, our average selling prices and gross margins would decline. The loss of a key customer, a reduction in sales to any key customer or our inability to attract new significant customers could seriously impact our revenue and materially and adversely affect our results of operations.

Our future success depends in significant part on strategic relationships with certain customers. If we cannot maintain these relationships or if these customers develop their own solutions or adopt a competitor’s solutions instead of buying our products, our operating results would be adversely affected.

      In the past, we have relied in significant part on our strategic relationships with customers that are technology leaders in our target markets. We intend to pursue the formation of these strategic relationships but we cannot assure you that we will be able to do so. These relationships often require us to develop new products that may involve significant technological challenges. Our customers frequently place considerable pressure on us to meet their tight development schedules. Accordingly, we may have to devote a substantial amount of our resources to our strategic relationships, which could detract from or delay our completion of other important development projects. Delays in development could impair our relationships with our strategic customers and negatively impact sales of the products under development. Moreover, it is possible that our customers may develop their own solutions or adopt a competitor’s solution for products that they currently buy from us. If that happens, our sales would decline and our business, financial condition and results of operations could be materially and adversely affected.

We are subject to order and shipment uncertainties, and if we are unable to accurately predict customer demand, we may hold excess or obsolete inventory, which would reduce our profit margin, or, conversely, we may have insufficient inventory, which would result in lost revenue opportunities and potentially in loss of market share and damaged customer relationships.

      We typically sell products pursuant to purchase orders rather than long-term purchase commitments. Customers can generally cancel or defer purchase orders on short notice without incurring a significant penalty. In the recent past, some of our customers have developed excess inventories of their own products and have, as a consequence, deferred purchase orders for our products. We currently do not have the ability to accurately predict what or how many products our customers will need in the future. Anticipating demand is difficult because our customers face volatile pricing and unpredictable demand for their own products, are increasingly focused more on cash preservation and tighter inventory management, and may be involved in legal proceedings that could affect their ability to buy our products. In addition, as an increasing number of our chips are being incorporated into consumer products, we anticipate greater fluctuations in demand for our products, which makes it more difficult to forecast customer demand. We place orders with our suppliers based on forecasts of customer demand and, in some instances, may establish buffer inventories to accommodate anticipated demand. Our forecasts are based on multiple assumptions, each of which may introduce error into our estimates. If we overestimate customer demand, we may allocate resources to manufacturing products that we may not be able to sell when we expect to, if at all. As a result, we would hold excess or obsolete inventory, which would reduce our profit margins and adversely affect our financial results. Conversely, if we underestimate customer demand or if insufficient manufacturing capacity is available, we would forego revenue opportunities and potentially lose market share and damage our customer relationships. In addition, any future significant cancellations or deferrals of product orders or the return of previously sold products could materially and adversely affect our profit margins, increase product obsolescence and restrict our ability to fund our operations. Furthermore, we generally recognize revenue upon shipment of products to a customer. If a customer refuses to accept shipped products or does not timely pay for these products, we could incur significant charges against our income. We have also recently entered into consigned or customer managed inventory arrangements with certain of our customers, although we have not shipped a significant amount of product under those arrangements as of December 31, 2005. Pursuant to these arrangements we deliver products to a warehouse of the customer or a designated third party based upon the customer’s projected needs, but do not recognize product revenue unless and until the customer reports that

it has removed our product from the warehouse to incorporate into its end products. If a customer does not take product under such an arrangement in accordance with the schedule it originally provided us, our predicted future revenue stream could vary substantially from our forecasts and our results of operations could be materially and adversely affected.

We may be unable to attract, retain or motivate key senior management and technical personnel, which could seriously harm our business.

      Our future success depends to a significant extent upon the continued service of our key senior management personnel, including our co-founder, Chairman of the Board and Chief Technical Officer, Henry Samueli, Ph.D., our Chief Executive Officer, Scott A. McGregor, and other senior executives. We do not have employment agreements with these executives, or any other key employees, that govern the length of their service, although we do have limited retention arrangements in place with certain executives. The loss of the services of Dr. Samueli, Mr. McGregor or certain other key senior management or technical personnel could materially and adversely affect our business, financial condition and results of operations. For instance, if any of these individuals were to leave our company unexpectedly, we could face substantial difficulty in hiring qualified successors and could experience a loss in productivity during the search for and while any such successor is integrated into our business and operations.

      Furthermore, our future success depends on our ability to continue to attract, retain and motivate senior management and qualified technical personnel, particularly software engineers, digital circuit designers, RF and mixed-signal circuit designers and systems applications engineers. Competition for these employees is intense. If we are unable to attract, retain and motivate such personnel in sufficient numbers and on a timely basis, we will experience difficulty in implementing our current business and product plans. In that event, we may be unable to successfully meet competitive challenges or to exploit potential market opportunities, which could adversely affect our business and results of operations.

      Equity awards generally comprise a significant portion of our compensation packages for all employees. In April and May 2003 we conducted a stock option exchange offer to address the substantial decline in the price of our Class A common stock over the preceding two years and to improve our ability to retain key employees. However, we cannot be certain that we will be able to continue to attract, retain and motivate employees if our Class A common stock experiences another substantial price decline.

      We have also modified our compensation policies by increasing cash compensation to certain employees and instituting awards of restricted stock units, while simultaneously reducing awards of stock options. This modification of our compensation policies and the applicability of the SFAS 123R requirement to expense the fair value of stock options awarded to employees will increase our operating expenses. We cannot be certain that the changes in our compensation policies will improve our ability to attract, retain and motivate employees. Our inability to attract and retain additional key employees and the increase in stock-based compensation expense could each have an adverse effect on our business, financial condition and results of operations.

If we are unable to develop and introduce new products successfully and in a cost-effective and timely manner or to achieve market acceptance of our new products, our operating results would be adversely affected.

      Our future success is dependent upon our ability to develop new semiconductor solutions for existing and new markets, introduce these products in a cost-effective and timely manner, and convince leading equipment manufacturers to select these products for design into their own new products. Our historical quarterly results have been, and we expect that our future results will continue to be, dependent on the introduction of a relatively small number of new products and the timely completion and delivery of those products to customers. The development of new silicon devices is highly complex, and from time to time we have experienced delays in completing the development and introduction of new products and lower than anticipated manufacturing yields in the early production of such products. If we were to experience any similar delays in the successful completion of a new product or similar reductions in our manufacturing yields for a new product in the future, our customer relationships, reputation and business could be seriously harmed.

      Our ability to develop and deliver new products successfully will depend on various factors, including our ability to:

In some of our businesses, our ability to develop and deliver next-generation products successfully and in a timely manner may depend in part on access to information, or licenses of technology or intellectual property rights, from companies that are our competitors. We cannot assure you that such information or licenses will be made available to us on a timely basis, if at all, or at reasonable cost and on commercially reasonable terms.

      If we are not able to develop and introduce new products successfully and in a cost-effective and timely manner, we will be unable to attract new customers or to retain our existing customers, as these customers may transition to other companies that can meet their product development needs, which would materially and adversely affect our results of operations.

We must keep pace with rapid technological change and evolving industry standards in the semiconductor industry and wired and wireless communications markets to remain competitive.

      Our future success will depend on our ability to anticipate and adapt to changes in technology and industry standards and our customers’ changing demands. We sell products in markets that are characterized by rapid technological change, evolving industry standards, frequent new product introductions, short product life cycles and increasing demand for higher levels of integration and smaller process geometries. Our past sales and profitability have resulted, to a large extent, from our ability to anticipate changes in technology and industry standards and to develop and introduce new and enhanced products incorporating the new standards and technologies. Our ability to adapt to these changes and to anticipate future standards, and the rate of adoption and acceptance of those standards, will be a significant factor in maintaining or improving our competitive position and prospects for growth. If new industry standards emerge, our products or our customers’ products could become unmarketable or obsolete, and we could lose market share. We may also have to incur substantial unanticipated costs to comply with these new standards. In addition, our target markets continue to undergo rapid growth and consolidation. A significant slowdown in any of these wired and wireless communications markets could materially and adversely affect our business, financial condition and results of operations. Our success will also depend on the ability of our customers to develop new products and enhance existing products for the wired and wireless communications markets and to introduce and promote those products successfully. These rapid technological changes and evolving industry standards make it difficult to formulate a long-term growth strategy because the semiconductor industry and wired and wireless communications markets may not continue to develop to the extent or in the time periods that we anticipate. We have invested substantial resources in emerging technologies that did not achieve the market acceptance that we had expected. If new markets do not develop as we anticipate, or if our products do not gain widespread acceptance in these markets, our business, financial condition and results of operations could be materially and adversely affected.

We will have difficulty selling our products if customers do not design our products into their product offerings or if our customers’ product offerings are not commercially successful.

      Our products are generally incorporated into our customers’ products at the design stage. As a result, we rely on equipment manufacturers to select our products to be designed into their products. Without these “design wins,” it becomes difficult to sell our products. We often incur significant expenditures on the development of a new product without any assurance that an equipment manufacturer will select our product for design into its own product. Additionally, in some instances, we are dependent on third parties to obtain or provide information that we need to achieve a design win. Some of these third parties may be our competitors and, accordingly, may not supply this information to us on a timely basis, if at all. Once an equipment manufacturer designs a competitor’s product into its product offering, it becomes significantly more difficult for us to sell our products to that customer because changing suppliers involves significant cost, time, effort and risk for the customer. Furthermore, even if an equipment manufacturer designs one of our products into its product offering, we cannot be assured that its product will be commercially successful or that we will receive any revenue from that product. Sales of our products largely depend on the commercial success of our customers’ products. Our customers are typically not obligated to purchase our products and can choose at any time to stop using our products if their own products are not commercially successful or for any other reason. We cannot assure you that we will continue to achieve design wins or that our customers’ equipment incorporating our products will ever be commercially successful.

The complexity of our products could result in unforeseen delays or expenses and in undetected defects or bugs, which could damage our reputation with current or prospective customers, result in significant costs and claims, and adversely affect the market acceptance of new products.

      Highly complex products such as the products that we offer frequently contain defects and bugs when they are first introduced or as new versions are released. Our products have previously experienced, and may in the future experience, these defects and bugs. If any of our products contains defects or bugs, or has reliability, quality or compatibility problems, our reputation may be damaged and customers may be reluctant to buy our products, which could materially and adversely affect our ability to retain existing customers and attract new customers. In addition, these defects or bugs could interrupt or delay sales or shipment of our products to our customers. To alleviate these problems, we may have to invest significant capital and other resources. Although our products are tested by us and our suppliers and customers, it is possible that our new products will contain defects or bugs. If any of these problems are not found until after we have commenced commercial production of a new product, we may be required to incur additional development costs and product recall, repair or field replacement costs. These problems may divert our technical and other resources from other development efforts and could result in claims against us by our customers or others, including possible claims for consequential damages and/or lost profits. In addition, system and handset providers that purchase components may require that we assume liability for defects associated with products produced by their manufacturing subcontractors and require that we provide a warranty for defects or other problems which may arise at the system level. Moreover, we would likely lose, or experience a delay in, market acceptance of the affected product or products, and we could lose credibility with our current and prospective customers.

Our acquisition strategy may be dilutive to existing shareholders, result in unanticipated accounting charges or otherwise adversely affect our results of operations, and result in difficulties in assimilating and integrating the operations, personnel, technologies, products and information systems of acquired companies or businesses.

      A key element of our business strategy involves expansion through the acquisitions of businesses, assets, products or technologies that allow us to complement our existing product offerings, expand our market coverage, increase our engineering workforce or enhance our technological capabilities. Between January 1, 1999 and December 31, 2005, we acquired 32 companies and certain assets of one other business. We continually evaluate and explore strategic opportunities as they arise, including business combination transactions, strategic partnerships, and the purchase or sale of assets, including tangible and intangible assets such as intellectual

property. We also continually evaluate the performance and prospects of our various businesses and possible adjustments in our businesses to reflect changes in our assessment of their performance and prospects.

      Acquisitions may require significant capital infusions, typically entail many risks, and could result in difficulties in assimilating and integrating the operations, personnel, technologies, products and information systems of acquired companies or businesses. We have in the past and may in the future experience delays in the timing and successful integration of an acquired company’s technologies and product development through volume production, unanticipated costs and expenditures, changing relationships with customers, suppliers and strategic partners, or contractual, intellectual property or employment issues. In addition, key personnel of an acquired company may decide not to work for us. The acquisition of another company or its products and technologies may also require us to enter into a geographic or business market in which we have little or no prior experience. These challenges could disrupt our ongoing business, distract our management and employees, harm our reputation and increase our expenses. These challenges are magnified as the size of the acquisition increases. Furthermore, these challenges would be even greater if we acquired a business or entered into a business combination transaction with a company that was larger and more difficult to integrate than the companies we have historically acquired.

      Acquisitions may require large one-time charges and can result in increased debt or contingent liabilities, adverse tax consequences, deferred compensation charges, and the recording and later amortization of amounts related to deferred compensation and certain purchased intangible assets, any of which items could negatively impact our results of operations. In addition, we may record goodwill in connection with an acquisition and incur goodwill impairment charges in the future. Any of these charges could cause the price of our Class A common stock to decline.

      Acquisitions or asset purchases made entirely or partially for cash may reduce our cash reserves. Alternatively, we may issue equity or convertible debt securities in connection with an acquisition. We have in effect an acquisition shelf registration statement on SEC Form S-4 that enables us to issue up to 30 million shares of our Class A common stock in one or more acquisition transactions that we may enter into from time to time. Any issuance of equity or convertible debt securities may be dilutive to our existing shareholders. In addition, the equity or debt securities that we may issue could have rights, preferences or privileges senior to those of our common stock. For example, as a consequence of the prior pooling-of-interests accounting rules, the securities issued in nine of our prior acquisitions were shares of Class B common stock, which have voting rights superior to our publicly traded Class A common stock.

      We cannot assure you that we will be able to consummate any pending or future acquisitions or that we will realize any anticipated benefits from these acquisitions. We may not be able to find suitable acquisition opportunities that are available at attractive valuations, if at all. Even if we do find suitable acquisition opportunities, we may not be able to consummate the acquisitions on commercially acceptable terms, and any decline in the price of our Class A common stock may make it significantly more difficult and expensive to initiate or consummate additional acquisitions.

As our international business expands, we are increasingly exposed to various legal, business, political and economic risks associated with our international operations.

      We currently obtain substantially all of our manufacturing, assembly and testing services from suppliers located outside the United States. In addition, approximately 25.8% of our 2005 net revenue was derived from sales to independent customers outside the United States, excluding foreign subsidiaries or manufacturing subcontractors of customers that are headquartered in the United States. We also frequently ship products to our domestic customers’ international manufacturing divisions and subcontractors. Products shipped to international destinations, primarily in Asia, represented approximately 84.5% of our 2005 net revenue. In 1999 we established an international distribution center in Singapore that includes an engineering design center. We also undertake design and development activities in Belgium, Canada, China, Denmark, France, Greece, India, Israel, Japan, Korea, the Netherlands, Taiwan and the United Kingdom, among other locations. In addition, we undertake various sales and marketing activities through regional offices in several other countries. We intend to continue to expand our international business activities and to open other design and operational centers abroad. The

continuing effects of the war in Iraq and terrorist attacks in the United States and abroad, the resulting heightened security and the increasing risk of extended international military conflicts may adversely impact our international sales and could make our international operations more expensive. International operations are subject to many other inherent risks, including but not limited to:

      Any of the factors described above may have a material adverse effect on our ability to increase or maintain our foreign sales.

      We currently operate under tax holidays and favorable tax incentives in certain foreign jurisdictions. For instance, in Singapore we operate under tax holidays that reduce our taxes in that country on certain non-investment income. Such tax holidays and incentives often require us to meet specified employment and investment criteria in such jurisdictions. However, we cannot assure you that we will continue to meet such criteria or enjoy such tax holidays and incentives, or realize any net tax benefits from such tax holidays or incentives. If any of our tax holidays or incentives are terminated, our results of operations may be materially and adversely affected.

      The seasonality of international sales and economic conditions in our primary overseas markets, particularly in Asia, may negatively impact the demand for our products abroad. All of our international sales to date have been denominated in U.S. dollars. Accordingly, an increase in the value of the U.S. dollar relative to foreign currencies could make our products less competitive in international markets or require us to assume the risk of denominating certain sales in foreign currencies. We anticipate that these factors will impact our business to a greater degree as we further expand our international business activities.

We face intense competition in the semiconductor industry and the wired and wireless communications markets, which could reduce our market share in existing markets and affect our entry into new markets.

      The semiconductor industry and the wired and wireless communications markets are intensely competitive. We expect competition to continue to increase as industry standards become well known and as other competitors enter our target markets. We currently compete with a number of major domestic and international suppliers of integrated circuits and related applications in our target markets. We also compete with suppliers of system-level and motherboard-level solutions incorporating integrated circuits that are proprietary or sourced from manufacturers other than Broadcom. This competition has resulted and may continue to result in declining average selling prices for some of our products. In all of our target markets we also may face competition from newly established competitors, suppliers of products based on new or emerging technologies, and customers who choose to develop their own semiconductor solutions. We also expect to encounter further consolidation in the markets in which we compete.

      Many of our competitors operate their own fabrication facilities and have longer operating histories and presence in key markets, greater name recognition, larger customer bases, and significantly greater financial, sales and marketing, manufacturing, distribution, technical and other resources than we do. These competitors may be able to adapt more quickly to new or emerging technologies and changes in customer requirements. They may also be able to devote greater resources to the promotion and sale of their products. In addition, current and potential competitors have established or may establish financial or strategic relationships among themselves or with existing or potential customers, resellers or other third parties. Accordingly, new competitors or alliances among competitors could emerge and rapidly acquire significant market share. Existing or new competitors may also develop technologies that more effectively address our markets with products that offer enhanced features and functionality, lower power requirements, greater levels of integration or lower cost. Increased competition has resulted in and is likely to continue to result in price reductions, reduced gross margins and loss of market share in certain markets. In some of our businesses, our ability to develop and deliver next-generation products successfully and in a timely fashion depends in part on access to information, or licenses of technology or intellectual property rights, from companies that are our competitors. We cannot assure you that such information or licenses will be made available to us on a timely basis, if at all, or at reasonable cost and on commercially reasonable terms. We cannot assure you that we will be able to continue to compete successfully against current or new competitors. If we do not compete successfully, we may lose market share in our existing markets and our revenues may fail to increase or may decline.

We may experience difficulties in transitioning to smaller geometry process technologies or in achieving higher levels of design integration, which may result in reduced manufacturing yields, delays in product deliveries and increased expenses.

      To remain competitive, we expect to continue to transition our semiconductor products to increasingly smaller line width geometries. This transition requires us to modify the manufacturing processes for our products and to redesign some products as well as standard cells and other integrated circuit designs that we may use in multiple products. We periodically evaluate the benefits, on a product-by-product basis, of migrating to smaller geometry process technologies to reduce our costs. Currently most of our products are manufactured in ..25 micron, .22 micron, .18 micron and ..13 micron geometry processes. In addition, we have begun to migrate some of our products to 90-nanometer and 65-nanometer process technologies. In the past, we have experienced some difficulties in shifting to smaller geometry process technologies or new manufacturing processes, which resulted in reduced manufacturing yields, delays in product deliveries and increased expenses. We may face similar difficulties, delays and expenses as we continue to transition our products to smaller geometry processes. We are dependent on our relationships with our foundry subcontractors to transition to smaller geometry processes successfully. We cannot assure you that the foundries that we use will be able to effectively manage the transition or that we will be able to maintain our existing foundry relationships or develop new ones. If any of our foundry subcontractors or we experience significant delays in this transition or fail to efficiently implement this transition, we could experience reduced manufacturing yields, delays in product deliveries and increased expenses, all of which could harm our relationships with our customers and our results of operations. As smaller geometry processes become more prevalent, we expect to continue to integrate greater levels of functionality, as well as customer and third party intellectual property, into our products. However, we may not be able to achieve higher levels of design integration or deliver new integrated products on a timely basis, if at all. Moreover, even if we are able to achieve higher levels of design integration, such integration may have a short-term adverse impact on our operating results, as we may reduce our revenue by integrating the functionality of multiple chips into a single chip.

We depend on five independent foundry subcontractors to manufacture substantially all of our current products, and any failure to secure and maintain sufficient foundry capacity could materially and adversely affect our business.

      We do not own or operate a fabrication facility. Five third-party foundry subcontractors located in Asia manufacture substantially all of our semiconductor devices in current production. Availability of foundry capacity has at times in the past been reduced due to strong demand. In addition, a recurrence of severe acute respiratory syndrome, or SARS, or the occurrence of a significant outbreak of avian influenza among humans or another

public health emergency in Asia could further affect the production capabilities of our manufacturers by resulting in quarantines or closures. If we are unable to secure sufficient capacity at our existing foundries, or in the event of a quarantine or closure at any of these foundries, our revenues, cost of revenues and results of operations would be negatively impacted.

      In September 1999 two of our foundries’ principal facilities were affected by a significant earthquake in Taiwan. As a consequence of this earthquake, they suffered power outages and equipment damage that impaired their wafer deliveries, which, together with strong demand, resulted in wafer shortages and higher wafer pricing industrywide. If any of our foundries experiences a shortage in capacity, suffers any damage to its facilities, experiences power outages, suffers an adverse outcome in pending or future litigation, or encounters financial difficulties or any other disruption of foundry capacity, we may need to qualify an alternative foundry. Even our current foundries need to have new manufacturing processes qualified if there is a disruption in an existing process. We typically require several months to qualify a new foundry or process before we can begin shipping products from it. If we cannot accomplish this qualification in a timely manner, we may experience a significant interruption in supply of the affected products.

      Because we rely on outside foundries with limited capacity, we face several significant risks, including:

      In addition, the manufacture of integrated circuits is a highly complex and technologically demanding process. Although we work closely with our foundries to minimize the likelihood of reduced manufacturing yields, our foundries have from time to time experienced lower than anticipated manufacturing yields. This often occurs during the production of new products or the installation and start-up of new process technologies. Poor yields from our foundries could result in product shortages or delays in product shipments, which could seriously harm our relationships with our customers and materially and adversely affect our results of operations.

      The ability of each foundry to provide us with semiconductor devices is limited by its available capacity and existing obligations. Although we have entered into contractual commitments to supply specified levels of products to some of our customers, we do not have a long-term volume purchase agreement or a significant guaranteed level of production capacity with any of our foundries. Foundry capacity may not be available when we need it or at reasonable prices. Availability of foundry capacity has in the recent past been reduced from time to time due to strong demand. We place our orders on the basis of our customers’ purchase orders or our forecast of customer demand, and the foundries can allocate capacity to the production of other companies’ products and reduce deliveries to us on short notice. It is possible that foundry customers that are larger and better financed than we are, or that have long-term agreements with our main foundries, may induce our foundries to reallocate capacity to them. This reallocation could impair our ability to secure the supply of components that we need. Although we use five independent foundries to manufacture substantially all of our semiconductor products, each component is typically manufactured at only one or two foundries at any given time, and if any of our foundries is unable to provide us with components as needed, we could experience significant delays in securing sufficient supplies of those components. Also, our third party foundries typically migrate capacity to newer, state-of-the-art manufacturing processes on a regular basis, which may create capacity shortages for our products designed to be manufactured on an older process. We cannot assure you that any of our existing or new foundries will be able to produce integrated circuits with acceptable manufacturing yields, or that our foundries will be able to deliver enough semiconductor devices to us on a timely basis, or at reasonable prices. These and other related factors could impair our ability to meet our customers’ needs and have a material and adverse effect on our operating results.

      Although we may utilize new foundries for other products in the future, in using new foundries we will be subject to all of the risks described in the foregoing paragraphs with respect to our current foundries.

We depend on third-party subcontractors to assemble, obtain packaging materials for, and test substantially all of our current products. If we lose the services of any of our subcontractors or if these subcontractors are unable to obtain sufficient packaging materials, shipments of our products may be disrupted, which could harm our customer relationships and adversely affect our net sales.

      We do not own or operate an assembly or test facility. Seven third-party subcontractors located in Asia assemble, obtain packaging materials for, and test substantially all of our current products. Because we rely on third-party subcontractors to perform these functions, we cannot directly control our product delivery schedules and quality assurance. This lack of control has resulted, and could in the future result, in product shortages or quality assurance problems that could delay shipments of our products or increase our manufacturing, assembly or testing costs.

      In the recent past we and others in our industry experienced a shortage in the supply of packaging substrates that we use for our products. If our third-party subcontractors are unable to obtain sufficient packaging materials for our products in a timely manner, we may experience a significant product shortage or delay in product shipments, which could seriously harm our customer relationships and materially and adversely affect our net sales.

      We do not have long-term agreements with any of our assembly or test subcontractors and typically procure services from these suppliers on a per order basis. If any of these subcontractors experiences capacity constraints or financial difficulties, suffers any damage to its facilities, experiences power outages or any other disruption of assembly or testing capacity, we may not be able to obtain alternative assembly and testing services in a timely manner. Due to the amount of time that it usually takes us to qualify assemblers and testers, we could experience significant delays in product shipments if we are required to find alternative assemblers or testers for our components. Any problems that we may encounter with the delivery, quality or cost of our products could damage our customer relationships and materially and adversely affect our results of operations. We are continuing to develop relationships with additional third-party subcontractors to assemble and test our products. However, even if we use these new subcontractors, we will continue to be subject to all of the risks described above.

Our products typically have lengthy sales cycles. A customer may decide to cancel or change its product plans, which could cause us to lose anticipated sales. In addition, our average product life cycles tend to be short and, as a result, we may hold excess or obsolete inventory that could adversely affect our operating results.

      After we have developed and delivered a product to a customer, the customer will usually test and evaluate our product prior to designing its own equipment to incorporate our product. Our customers may need three to more than six months to test, evaluate and adopt our product and an additional three to more than nine months to begin volume production of equipment that incorporates our product. Due to this lengthy sales cycle, we may experience significant delays from the time we increase our operating expenses and make investments in inventory until the time that we generate revenue from these products. It is possible that we may never generate any revenue from these products after incurring such expenditures. Even if a customer selects our product to incorporate into its equipment, we have no assurances that the customer will ultimately market and sell its equipment or that such efforts by our customer will be successful. The delays inherent in our lengthy sales cycle increase the risk that a customer will decide to cancel or change its product plans. Such a cancellation or change in plans by a customer could cause us to lose sales that we had anticipated. In addition, anticipated sales could be materially and adversely affected if a significant customer curtails, reduces or delays orders during our sales cycle or chooses not to release equipment that contains our products.

      While our sales cycles are typically long, our average product life cycles tend to be short as a result of the rapidly changing technology environment in which we operate. As a result, the resources devoted to product sales and marketing may not generate material revenue for us, and from time to time, we may need to write off excess and obsolete inventory. If we incur significant marketing expenses and investments in inventory in the future that we are not able to recover, and we are not able to compensate for those expenses, our operating results could be

adversely affected. In addition, if we sell our products at reduced prices in anticipation of cost reductions but still hold higher cost products in inventory, our operating results would be harmed.

Our stock price is highly volatile. Accordingly, you may not be able to resell your shares of common stock at or above the price you paid for them.

      The market price of our Class A common stock has fluctuated substantially in the past and is likely to continue to be highly volatile and subject to wide fluctuations. Since January 1, 2002 our Class A common stock has traded at prices as low as $9.52 and as high as $71.87 per share. Fluctuations have occurred and may continue to occur in response to various factors, many of which we cannot control, including:

      In addition, the market prices of securities of Internet-related, semiconductor and other technology companies have been volatile. This volatility has significantly affected the market prices of securities of many technology companies for reasons frequently unrelated to the operating performance of the specific companies. Accordingly, you may not be able to resell your shares of common stock at or above the price you paid. In the past, we and other companies that have experienced volatility in the market price of their securities have been, and in the future we may be, the subject of securities class action litigation.

The independent foundries upon which we rely to manufacture substantially all of our current products, as well as and our California and Singapore facilities, are located in regions that are subject to earthquakes and other natural disasters.

      Two of the five third-party foundries upon which we rely to manufacture substantially all of our semiconductor devices are located in Taiwan. Taiwan has experienced significant earthquakes in the past and could be subject to additional earthquakes. Any earthquake or other natural disaster, such as a tsunami, in a country in which any of our foundries is located could significantly disrupt our foundries’ production capabilities and could result in our experiencing a significant delay in delivery, or substantial shortage, of wafers and possibly in higher wafer prices. Our California facilities, including our principal executive offices and major design centers, are located near major earthquake fault lines. Our international distribution center is located in Singapore, which could also be subject to an earthquake, tsunami or other natural disaster. If there is a major earthquake or any other natural disaster in a region where one or more of our facilities are located, our operations could be significantly disrupted. Although we have established business interruption plans to prepare for any such event, we cannot guarantee that we will be able to effectively address all interruptions that such an event could cause.

Changes in current or future laws or regulations or the imposition of new laws or regulations by the FCC, other federal or state agencies or foreign governments could impede the sale of our products or otherwise harm our business.

      The Federal Communications Commission has broad jurisdiction over each of our target markets. Although current FCC regulations and the laws and regulations of other federal or state agencies are not directly applicable to our products, they do apply to much of the equipment into which our products are incorporated. FCC regulatory policies that affect the ability of cable operators or telephone companies to offer certain services to their customers or other aspects of their business may impede sales of our products. Accordingly, the effects of regulation on our customers or the industries in which they operate may, in turn, materially and adversely impact our business. For example, in the past we have experienced delays when products incorporating our chips failed to comply with FCC emissions specifications. We and our customers may also be subject to regulation by countries other than the United States. Foreign governments may impose tariffs, duties and other import restrictions on components that we obtain from non-domestic suppliers and may impose export restrictions on products that we sell internationally. These tariffs, duties or restrictions could materially and adversely affect our business, financial condition and results of operations. Changes in current laws or regulations or the imposition of new laws and regulations in the United States or elsewhere could also materially and adversely affect our business.

If our internal controls over financial reporting do not comply with the requirements of the Sarbanes-Oxley Act, our business and stock price could be adversely affected.

      Section 404 of the Sarbanes-Oxley Act of 2002 requires us to evaluate the effectiveness of our internal controls over financial reporting as of the end of each year, and to include a management report assessing the effectiveness of our internal controls over financial reporting in all annual reports. Section 404 also requires our independent registered public accounting firm to attest to, and report on, management’s assessment of our internal controls over financial reporting.

      Our management, including our CEO and CFO, does not expect that our internal controls over financial reporting will prevent all error and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, involving Broadcom have been, or will be, detected. These inherent limitations include the realities that judgments in decision making can be faulty and that breakdowns can occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and we cannot assure you that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

      Although our management has determined, and our independent registered public accounting firm has attested, that our internal controls over financial reporting were effective as of December 31, 2005, we cannot assure you that we or our independent registered public accounting firm will not identify a material weakness in our internal controls in the future. A material weakness in our internal controls over financial reporting would require management and our independent registered public accounting firm to evaluate our internal controls as ineffective. If our internal controls over financial reporting are not considered adequate, we may experience a loss of public confidence, which could have an adverse effect on our business and our stock price.

We may seek to raise additional capital through the issuance of additional equity or debt securities or by borrowing money, but additional funds may not be available on terms acceptable to us, if at all.

      We believe that our existing cash, cash equivalents and marketable securities, together with cash generated by operations and from the exercise of employee stock options will be sufficient to cover our working capital needs, capital expenditures, investment requirements, commitments and repurchases of our Class A common stock for at least the next 12 months. However, it is possible that we may need to raise additional funds to finance our activities beyond the next 12 months or to consummate acquisitions of other businesses, assets, products or technologies. We could raise such funds by selling equity or debt securities to the public or to selected investors, or by borrowing money from financial institutions. In addition, even though we may not need additional funds, we may still elect to sell additional equity or debt securities or obtain credit facilities for other reasons. We have in effect a universal shelf registration statement on SEC Form S-3 that allows us to sell, in one or more public offerings, shares of our Class A common stock, shares of preferred stock or debt securities, or any combination of such securities, for proceeds in an aggregate amount of up to $750 million. However, we have not issued nor do we have immediate plans to issue securities to raise capital under the universal shelf registration statement. If we elect to raise additional funds, we may not be able to obtain such funds on a timely basis on acceptable terms, if at all. If we raise additional funds by issuing equity or convertible debt securities, the ownership percentages of existing shareholders would be reduced. In addition, the equity or debt securities that we issue may have rights, preferences or privileges senior to those of our common stock.

Our co-founders, directors, executive officers and their affiliates can control the outcome of matters that require the approval of our shareholders, and accordingly we will not be able to engage in certain transactions without their approval.

      As of December 31, 2005 our co-founders, directors, executive officers and their respective affiliates beneficially owned approximately 15.6% of our outstanding common stock and held 62.2% of the total voting power held by our shareholders. Accordingly, these shareholders currently have enough voting power to control the outcome of matters that require the approval of our shareholders. These matters include the election of our Board of Directors, the issuance of additional shares of Class B common stock, and the approval of most significant corporate transactions, including certain mergers and consolidations and the sale of substantially all of our assets. In particular, as of December 31, 2005 our two founders, Dr. Henry T. Nicholas III, who is no longer an officer or director of Broadcom, and Dr. Henry Samueli, our Chairman of the Board and Chief Technical Officer, beneficially owned a total of approximately 14.5% of our outstanding common stock and held 61.2% of the total voting power held by our shareholders. Because of their significant voting stock ownership, we will not be able to engage in certain transactions, and our shareholders will not be able to effect certain actions or transactions, without the approval of one or both of these shareholders. These actions and transactions include changes in the composition of our Board of Directors, certain mergers, and the sale of control of our company by means of a tender offer, open market purchases or other purchases of our Class A common stock, or otherwise.

Our articles of incorporation and bylaws contain anti-takeover provisions that could prevent or discourage a third party from acquiring us.

      Our articles of incorporation and bylaws contain provisions that may prevent or discourage a third party from acquiring us, even if the acquisition would be beneficial to our shareholders. In addition, we have in the past issued and may in the future issue shares of Class B common stock in connection with certain acquisitions, upon exercise of certain stock options, and for other purposes. Class B shares have superior voting rights entitling the holder to ten votes for each share held on matters that we submit to a shareholder vote (as compared to one vote per share in the case of our Class A common stock) as well as the right to vote separately as a class (i) as required by law and (ii) in the case of a proposed issuance of additional shares of Class B common stock, unless such issuance is approved by at least two-thirds of the members of the Board of Directors then in office. Our Board of Directors also has the authority to fix the rights and preferences of shares of our preferred stock and to issue such shares without a shareholder vote. It is possible that the provisions in our charter documents, the exercise of supervoting rights by holders of our Class B common stock, our co-founders’, directors’ and officers’ ownership of a majority of the Class B common stock, or the ability of our Board of Directors to issue preferred

stock or additional shares of Class B common stock may prevent or discourage third parties from acquiring us, even if the acquisition would be beneficial to our shareholders. In addition, these factors may discourage third parties from bidding for our Class A common stock at a premium over the market price for our stock. These factors may also materially and adversely affect voting and other rights of the holders of our common stock and the market price of our Class A common stock.

      Not applicable.

      We lease facilities in Irvine (our corporate headquarters) and Santa Clara County, California. Each of these facilities includes administration, sales and marketing, research and development and operations functions. In addition to our principal design facilities in Irvine and Santa Clara County, we lease additional design facilities in Tempe, Arizona; San Diego County, California; Colorado Springs, Fort Collins, and Longmont, Colorado; Duluth, Georgia; Germantown, Maryland; Andover, Massachusetts; Nashua, New Hampshire; Matawan, New Jersey; Austin, Texas and Seattle, Washington, among other locations.

      Internationally, we lease a distribution center that includes engineering design and administrative facilities in Singapore as well as engineering design and administrative facilities in Belgium, Canada, China, Denmark, France, Greece, India, Israel, Japan, Korea, the Netherlands, Taiwan and the United Kingdom, among other locations.

      In addition, we lease various sales and marketing facilities in the United States and several other countries.

      The leased facilities comprise an aggregate of approximately 2.0 million square feet. Our principal facilities have lease terms expiring between 2006 and 2017. We believe that the facilities under lease by us will be adequate for at least the next 12 months. In December 2004 we entered into a lease agreement under which our corporate headquarters will move from our present location to a new, larger facility in Irvine, which will consist of eight buildings with an aggregate of approximately 0.7 million square feet. The lease term is a period of ten years and two months beginning after the completion of the first two buildings and related tenant improvements, which is anticipated to occur in the first quarter of 2007.

      For additional information regarding our obligations under property leases, see Note 6 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report.

      The information set forth under Note 12 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report, is incorporated herein by reference. For an additional discussion of certain risks associated with legal proceedings, see the section entitled “Risk Factors” in Item 1A of this Report.

      No matters were submitted to a vote of security holders during the quarter ended December 31, 2005.

PART II

Market Information and Holders

      Our Class A common stock is traded on the NASDAQ National Market under the symbol BRCM. The following table sets forth, for the periods indicated, the high and low sale prices for our Class A common stock on the NASDAQ National Market:

      As of December 31, 2005 there were 1,725 record holders of our Class A common stock and 263 record holders of our Class B common stock. On February 10, 2006 the last reported sale price of our Class A common stock on the NASDAQ National Market was $69.01 per share.

      Our Class B common stock is not publicly traded. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock and in most instances automatically converts upon sale or other transfer.

Dividend Policy

      We have never declared or paid cash dividends on shares of our capital stock. We currently intend to retain all of our earnings, if any, for use in our business and in acquisitions of other businesses, assets, products or technologies, and for purchases of our common stock from time to time. We do not anticipate paying any cash dividends in the foreseeable future.

Securities Authorized for Issuance under Equity Compensation Plans

      The information under the caption “Equity Compensation Plan Information,” appearing in the Proxy Statement, is hereby incorporated by reference. For additional information on our stock incentive plans and activity, see Note 8 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report.

Recent Sales of Unregistered Securities

      In the three months ended December 31, 2005, we issued an aggregate of 1.5 million shares of our Class A common stock upon conversion of a like number of shares of our Class B common stock. The offers and sales of those securities were effected without registration in reliance on the exemption from registration provided by Section 3(a)(9) of the Securities Act.

Issuer Purchases of Equity Securities

      In February 2005 our Board of Directors authorized a program to repurchase shares of our Class A common stock. The Board approved the repurchase of shares having an aggregate value of up to $250 million from time to time over a period of one year, depending on market conditions and other factors.

      The following table details the repurchases that were made under the program during the three months ended December 31, 2005:

     Under the program, through January 25, 2006 we repurchased a total of approximately 3.7 million shares of our Class A common stock at a weighted average price of $42.12 per share, for $156.0 million including transaction costs.

      On January 25, 2006 the Board of Directors approved an amendment to the share repurchase program extending the program through January 26, 2007 and authorizing the repurchase of additional shares of the our Class A common stock having a total market value of up to $500 million from time to time during the period beginning January 26, 2006 and ending January 26, 2007. Repurchases under the program will be made in open market or privately negotiated transactions in compliance with Rule 10b-18 under the Securities Exchange Act of 1934, as amended, subject to market conditions, applicable legal requirements and other factors. The program does not obligate Broadcom to acquire any particular amount of Class A common stock and may be suspended at any time at our discretion.

     The table above sets forth our selected consolidated financial data. We prepared this information using the consolidated financial statements of Broadcom for the five years ended December 31, 2005. Certain amounts in the selected consolidated financial data above have been reclassified to conform with the 2005 presentation. The consolidated financial statements include the results of operations of acquisitions commencing on their respective acquisition dates. See Note 3 of Notes to Consolidated Financial Statements, included in Part IV, Item 15 of this Report.

      You should read this selected consolidated financial data together with the Consolidated Financial Statements and related Notes contained in this Report and in our prior and subsequent reports filed with the SEC, as well as the section of this Report and our other reports entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

      You should read the following discussion and analysis in conjunction with our Consolidated Financial Statements and related Notes thereto included in Part IV, Item 15 of this Report and the “Risk Factors” included in Part I, Item 1A of this Report, as well as other cautionary statements and risks described elsewhere in this Report, before deciding to purchase, hold or sell our common stock.

Overview

      Broadcom Corporation is a global leader in semiconductors for wired and wireless communications. Our products enable the delivery of voice, video, data and multimedia to and throughout the home, the office and the mobile environment. Broadcom provides the industry’s broadest portfolio of state-of-the-art system-on-a-chip and software solutions to manufacturers of computing and networking equipment, digital entertainment and broadband access products, and mobile devices. Our diverse product portfolio includes solutions for digital cable, satellite and Internet Protocol (IP) set-top boxes and media servers; high definition television (HDTV); high definition DVD players and personal video recording (PVR) devices; cable and DSL modems and residential gateways; high-speed transmission and switching for local, metropolitan, wide area and storage networking; SystemI/O server solutions; broadband network and security processors; wireless and personal area networking; cellular and terrestrial wireless communications; and Voice over Internet Protocol (VoIP) gateway and telephony systems.

      Net Revenue. We sell our products to leading manufacturers of wired and wireless communications equipment in each of our target markets. Because we leverage our technologies across different markets, certain of our integrated circuits may be incorporated into equipment used in multiple markets. We utilize independent foundries to manufacture all of our semiconductor products.

      Our net revenue is generated principally by sales of our semiconductor products. Such sales represented approximately 99.1%, 99.0% and 98.5% of our total net revenue in 2005, 2004 and 2003, respectively. We derive the remaining balance of our net revenue predominantly from software licenses, development agreements, support and maintenance agreements and cancellation fees.

      The majority of our sales occur through the efforts of our direct sales force. Sales made through distributors represented approximately 15.6%, 9.6% and 7.1% of our total net revenue in 2005, 2004 and 2003, respectively. The increase in 2005 was the result of more of our solutions being sold through distributors in Asia.

      The demand for our products has been affected in the past, and may continue to be affected in the future, by various factors, including, but not limited to, the following:

      For these and other reasons, our net revenue and results of operations in 2005 and prior periods may not necessarily be indicative of future net revenue and results of operations.

      From time to time, our key customers place large orders causing our quarterly net revenue to fluctuate significantly. We expect that these fluctuations will continue and that they may be exaggerated by the increasing volume of Broadcom solutions that are incorporated into consumer products, sales of which are typically subject to greater seasonality and greater volume fluctuations than non-consumer OEM products.

      Sales to our five largest customers, including sales to their manufacturing subcontractors, as a percentage of net revenue were as follows:

     We expect that our largest customers will continue to account for a substantial portion of our net revenue in 2006 and for the foreseeable future. The identities of our largest customers and their respective contributions to our net revenue have varied and will likely continue to vary from period to period.

      Net revenue derived from all independent customers located outside the United States, excluding foreign subsidiaries or manufacturing subcontractors of customers that are headquartered in the United States, as a percentage of total net revenue was as follows:

      Net revenue derived from shipments to international destinations, primarily to Asia, represented approximately 84.5%, 79.0% and 77.7% of our net revenue in 2005, 2004 and 2003, respectively.

      All of our revenue to date has been denominated in U.S. dollars.

      Gross Margin. Our gross margin, or gross profit as a percentage of net revenue, has been affected in the past, and may continue to be affected in the future, by various factors, including, but not limited to, the following:

      Net Income (Loss). Our net income (loss) has been affected in the past, and may continue to be affected in the future, by various factors, including, but not limited to, the following:

      In 2005 our net income was approximately $411.7 million as compared to $218.7 million in 2004, a difference of $193.0 million. This improvement in profitability in 2005 was the direct result of a 11.3% improvement in net revenue and a 2.3 percentage point improvement in gross margin. This resulted in an increase of $198.2 million in gross profit. In addition, we had reductions in 2005 in stock-based compensation expense, IPR&D, impairment of intangible assets and provision for income taxes, aggregating approximately $148.3 million, offset by an increase in settlement costs of approximately $41.3 million.

      Product Cycles. The cycle for test, evaluation and adoption of our products by customers can range from three to more than six months, with an additional three to more than nine months before a customer commences volume production of equipment incorporating our products. Due to this lengthy sales cycle, we may experience significant delays from the time we incur expenses for research and development, selling, general and administrative efforts, and investments in inventory, to the time we generate corresponding revenue, if any. The rate of new orders may vary significantly from month to month and quarter to quarter. If anticipated sales or shipments in any quarter do not occur when expected, expenses and inventory levels could be disproportionately high, and our results of operations for that quarter, and potentially for future quarters, would be materially and adversely affected.

      Acquisition Strategy. An element of our business strategy involves the acquisition of businesses, assets, products or technologies that allow us to reduce the time required to develop new technologies and products and bring them to market, incorporate enhanced functionality into and complement our existing product offerings, augment our engineering workforce, and/or enhance our technological capabilities. We plan to continue to evaluate strategic opportunities as they arise, including acquisitions and other business combination transactions, strategic relationships, capital infusions and the purchase or sale of assets.

      In 2005, 2004 and 2003 we completed eleven acquisitions for original aggregate equity consideration of $292.2 million and cash consideration of $209.3 million. In 2005 we acquired Alliant Networks, Inc., a developer of WLAN embedded software; Zeevo, Inc., a developer of Bluetooth headset chipsets; Siliquent Technologies Inc., a developer of 10 Gigabit Ethernet server controllers; and Athena Semiconductors, Inc., a developer of mobile digital television tuner and low-power Wi-Fi technology. In 2004 we acquired RAIDCore, Inc., a developer of redundant array of inexpensive disks, or RAID, and virtualization software; Sand Video, Inc., a developer of advanced video compression semiconductor technology; M-Stream, Inc., a developer of technology for signal-to-noise ratio performance improvements in cellular handsets; WIDCOMM, Inc., a provider of software solutions for Bluetooth wireless products; Zyray Wireless Inc., a developer of baseband co-processors addressing UMTS mobile devices; and Alphamosaic Limited, a developer of advanced mobile imaging, multimedia and 3D graphics technology optimized for use in cellular phones and other mobile devices. In 2003 we acquired certain assets of Gadzoox Networks, Inc., a provider of storage networking technology. Because each of these acquisitions was accounted for as a purchase transaction, the accompanying consolidated financial statements include the results of operations of the acquired companies commencing on their respective acquisition dates. See Note 3 of Notes to Consolidated Financial Statements.

      Business Enterprise Segments. We operate in one reportable operating segment, wired and wireless broadband communications. SFAS No. 131, Disclosures about Segments of an Enterprise and Related Information, or SFAS 131, establishes standards for the way public business enterprises report information about operating segments in annual consolidated financial statements and requires that those enterprises report selected information about operating segments in interim financial reports. SFAS 131 also establishes standards for related disclosures about products and services, geographic areas and major customers. Although we had four operating segments at December 31, 2005, under the aggregation criteria set forth in SFAS 131 we operate in only one reportable operating segment, wired and wireless broadband communications.

      Under SFAS 131, two or more operating segments may be aggregated into a single operating segment for financial reporting purposes if aggregation is consistent with the objective and basic principles of SFAS 131, if the segments have similar economic characteristics, and if the segments are similar in each of the following areas:

We meet each of the aggregation criteria for the following reasons:

      All of our operating segments share similar economic characteristics as they have a similar long term business model, operate at similar gross margins, and have similar research and development expenses and similar selling, general and administrative expenses. The causes for variation among each of our operating segments are the same and include factors such as (i) life cycle and price and cost fluctuations, (ii) number of competitors, (iii) product differentiation and (iv) size of market opportunity. Additionally, each operating segment is subject to the overall cyclical nature of the semiconductor industry. The number and composition of employees and the amounts and types of tools and materials required are similar for each operating segment. Finally, even though we periodically reorganize our operating segments based upon changes in customers, end markets or products, acquisitions, long-term growth strategies, and the experience and bandwidth of the senior executives in charge, the common financial goals for each operating segment remain constant.

      Because we meet each of the criteria set forth in SFAS 131 and our four operating segments as of December 31, 2005 share similar economic characteristics, we aggregate our results of operations into one reportable operating segment.

Critical Accounting Policies and Estimates

      The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of net revenue and expenses in the reporting period. We regularly evaluate our estimates and assumptions related to allowances for doubtful accounts, sales returns and allowances, warranty reserves, inventory reserves, stock-based compensation expense, goodwill and purchased intangible asset valuations, strategic investments, deferred income tax asset valuation allowances, restructuring costs, litigation and other loss contingencies. We base our estimates and assumptions on current facts, historical experience and various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the accrual of costs and expenses that are not readily apparent from other sources. The actual results experienced by us may differ materially and adversely from our estimates. To the extent there are material differences between our estimates and the actual results, our future results of operations will be affected.

      We believe the following critical accounting policies require us to make significant judgments and estimates in the preparation of our consolidated financial statements:

Results of Operations

      The following table sets forth certain Consolidated Statements of Operations data expressed as a percentage of net revenue for the periods indicated:

      The following table presents net revenue, cost of revenue and gross profit for 2005 and 2004:

     Net Revenue. Our revenue is generated principally by sales of our semiconductor products. Net revenue is revenue less reductions for rebates and provisions for returns and allowances. The following table presents net revenue from each of our major target markets and their respective contributions to the increase in net revenue in 2005 as compared to 2004:

      The 2005 decrease in net revenue from our enterprise networking target market resulted primarily from the previously anticipated decline in shipments of our Intel processor-based server chipsets, which resulted in a $206.8 million decrease in net revenue for those products, offset by an increase in net revenue for our enterprise Ethernet and controller products. The 2005 increase in net revenue from our broadband communications target market resulted primarily from an increase in net revenue from solutions for broadband modems. The 2005 increase in net revenue from our mobile and wireless target market resulted primarily from strength in our Bluetooth and mobile multimedia product offerings, partially offset by weakness in our cellular handset and wireless LAN businesses in the first half of 2005.

      Our enterprise networking products include Ethernet transceivers, controllers, switches, broadband network and security processors, server chipsets and storage products. Our broadband communications products include solutions for cable modems, DSL applications, digital cable, direct broadcast satellite and IP set-top boxes, digital TVs and HD DVD and personal video recording devices. Our mobile and wireless products include wireless LAN, cellular, Bluetooth, mobile multimedia and VoIP solutions.

      The following table presents net revenue from each of our major target markets and their respective contributions to the increase in net revenue in the fourth quarter of 2005 as compared to the third quarter of 2005:

      The increase in net revenue from the third quarter to the fourth quarter of 2005 resulted primarily from an increase in the volume of shipments of our semiconductor products stemming from the rise in demand for our products in each of our major target markets. The increase in net revenue in our enterprise networking target market resulted primarily from an increase in net revenue from our enterprise Ethernet products. The increase in net revenue from our mobile and wireless target market resulted primarily from strength in our Bluetooth and mobile multimedia product offerings.

      We currently anticipate that total net revenue in the first quarter of 2006 will be approximately $865.0 million to $875.0 million, as compared to $820.6 million in net revenue achieved in the fourth quarter of 2005. In the first quarter of 2006, we expect to see this increase distributed across all three of our major target markets, with the strongest growth expected to come from our broadband communications target market.

      We recorded rebates to certain customers in the amounts of $220.8 million and $263.6 million in 2005 and 2004, respectively. We account for rebates in accordance with FASB Emerging Issues Task Force, or EITF, Issue No. 01-9, Accounting for Consideration Given by a Vendor to a Customer (Including a Reseller of the Vendor’s Products), and, accordingly, record reductions to revenue for rebates in the same period that the related revenue is recorded. The amount of these reductions is based upon the terms included in our various rebate agreements. Historically, reversals of rebate accruals have not been material. We anticipate that accrued rebates will vary in future periods based on the level of overall sales to customers that participate in our rebate programs and as specific rebate programs contractually end and unclaimed rebates are no longer subject to payment. However, we do not expect rebates to impact our gross margin as our prices to these customers and corresponding revenue and margins are already net of such rebates.

      Cost of Revenue and Gross Profit. Cost of revenue includes the cost of purchasing the finished silicon wafers manufactured by independent foundries, costs associated with our purchase of assembly, test and quality assurance services and packaging materials for semiconductor products, prototyping costs, amortization of purchased technology, and manufacturing overhead, including costs of personnel and equipment associated with manufacturing support, product warranty costs and provisions for excess or obsolete inventories. Gross profit represents net revenue less the cost of revenue and less stock-based compensation expense for personnel engaged in manufacturing support.

      The 2005 increase in gross profit resulted primarily from the 11.3% increase in net revenue. Gross margin increased from 50.3% in 2004 to 52.6% in 2005. The primary factors that contributed to this 2.3 percentage point improvement were improvements in product margin due to (i) changes in product mix, (ii) benefits from the favorable foundry pricing we were able to negotiate at the beginning of 2005 and (iii) other product cost savings, particularly in the area of yield improvements. In addition, gross margin increased due to a decrease in provisions for excess and obsolete inventory and warranty costs as compared to 2004.

      The following table presents details of the amortization of purchased intangible assets by expense category:

      The following table presents details of the unamortized balance of purchased intangible assets that will be amortized to future cost of revenue and operating expense:

      Gross margin has been and will likely continue to be impacted in the future by competitive pricing programs, fluctuations in silicon wafer costs and assembly, packaging and testing costs, product warranty costs, provisions for excess or obsolete inventories, possible future changes in product mix, and the introduction of products with lower margins, among other factors. We anticipate that our gross margin in the first quarter of 2006 may be flat or decrease slightly compared to the fourth quarter of 2005. Our gross margin may also be impacted by additional stock-based compensation expense, as discussed below, and the amortization of purchased intangible assets related to future acquisitions.

      Effective January 1, 2006 we adopted SFAS 123R, which is a revision of SFAS No. 123, Accounting for Stock-Based Compensation, or SFAS 123. SFAS 123R requires all share-based payments to employees, including grants of employee stock options, to be recognized in the financial statements based on their grant date fair values. The balance of unearned stock-based compensation to be included in cost of revenue in the period 2006 through 2009 related to share-based awards unvested at December 31, 2005, as previously calculated under the disclosure-only requirements of SFAS 123, is approximately $36.5 million. The weighted-average period over which the unearned stock-based compensation is expected to be recognized is approximately two years. If there are any modifications or cancellations of the underlying unvested securities, we may be required to accelerate, increase or cancel any remaining unearned stock-based compensation expense. To the extent that we grant additional equity securities to employees or assume unvested securities in connection with any acquisitions, our cost of revenue will be increased by the additional unearned compensation resulting from those additional grants or acquisitions. We anticipate we will grant additional employee stock options and restricted stock units in the second quarter of 2006 as part of our regular annual equity compensation focal review program. The value of these grants is not included in the amount above, and the impact of these grants cannot be predicted at this time because it will depend on the number of share-based payments granted as part of the focal review program and the then current fair values. For an additional discussion of the effects of expensing of stock options, see “Recent Accounting Pronouncements,” below.

       Research and Development and Selling, General and Administrative Expenses

      The following table presents research and development and selling, general and administrative expenses for 2005 and 2004:

     Research and Development Expense. Research and development expense consists primarily of salaries and related costs of employees engaged in research, design and development activities, costs related to engineering design tools and computer hardware, prototyping costs, subcontracting costs and facilities expenses. Amounts associated with stock-based compensation expense for employees engaged in research and development are shown separately. Research and development expense does not include amounts associated with amortization of purchased intangible assets related to research and development activities.

      The 2005 increase in research and development expense resulted primarily from an increase of $81.2 million in personnel-related expenses. The increase in personnel-related expenses is attributable to an increase in the number of employees engaged in research and development activities in 2005, resulting from both direct hiring and acquisitions, as well as increased cash compensation levels. Based upon past experience, we anticipate that research and development expense will continue to increase over the long term as a result of the growth and diversification of the markets we serve, new product opportunities, changes in our compensation policies and any expansion into new markets and technologies. We anticipate that research and development expense in the first quarter of 2006 will increase from the $168.4 million incurred in the fourth quarter of 2005.

      We remain committed to significant research and development efforts to extend our technology leadership in the wired and wireless communications markets in which we operate. We hold more than 1,250 U.S. patents, and we maintain an active program of filing for and acquiring additional U.S. and foreign patents in wired and wireless communications and other fields.

      Selling, General and Administrative Expense. Selling, general and administrative expense consists primarily of personnel-related expenses, legal and other professional fees, facilities expenses, communications expenses and advertising expenses. Amounts associated with stock-based compensation expense for selling, general and administrative employees are shown separately. Selling, general and administrative expense does not include amounts associated with amortization of purchased intangible assets related to selling, general and administrative activities.

      The 2005 increase in selling, general and administrative expense resulted primarily from an increase of $28.1 million in personnel-related expenses. This increase in personnel-related expenses is attributable to an increase in the number of employees engaged in selling, general and administrative activities in 2005, resulting from both direct hiring and acquisitions, as well as increased cash compensation levels. Based upon past experience, we anticipate that selling, general and administrative expense will continue to increase over the long-

term to support any expansion of our operations through periodic changes in our infrastructure, changes in our compensation policies, acquisition and integration activities, international operations, and current and future litigation. We anticipate that selling, general and administrative expense in the first quarter of 2006 will increase from the $68.0 million incurred in the fourth quarter of 2005.

      Research and Development and Selling, General and Administrative Expense — Stock-Based Compensation Expense. Stock-based compensation expense generally represents the amortization of deferred compensation resulting from restricted stock units issued to employees and unvested equity compensation instruments assumed in acquisitions. Deferred compensation is presented as a reduction of shareholders’ equity and is amortized ratably over the respective vesting periods of the applicable unvested securities, generally four years. During 2005 we recorded approximately $204.9 million of deferred compensation primarily related to the issuance of approximately 5.6 million restricted stock units in connection with our regular annual equity compensation review for employees as well as for new hire grants. This deferred compensation is being amortized ratably over the vesting periods of the underlying restricted stock units, generally 16 quarters.

      The decrease in research and development stock-based compensation expense in 2005 related primarily to a reduction in the amortization of deferred compensation resulting from assumed unvested equity compensation instruments becoming fully vested and the elimination of deferred compensation as a result of the termination of employment of certain employees, partially offset by the amortization of deferred compensation resulting from the issuance of restricted stock units in 2005.

      Effective January 1, 2006 we adopted SFAS 123R. The balance of unearned stock-based compensation to be included in research and development and selling, general and administrative expense in the period 2006 through 2009 related to share-based awards unvested at December 31, 2005, as previously calculated under the disclosure-only requirements of SFAS 123, is approximately $464.9 million and $208.6 million, respectively. The weighted-average period over which the unearned stock-based compensation is expected to be recognized is approximately two years. If there are any modifications or cancellations of the underlying unvested securities, we may be required to accelerate, increase or cancel any remaining unearned stock-based compensation expense. To the extent that we grant additional equity securities to employees or assume unvested securities in connection with any acquisitions, our operating expenses will be increased by the additional unearned compensation resulting from those additional grants or acquisitions. We anticipate we will grant additional employee stock options and restricted stock units in the second quarter of 2006 as part of our regular annual equity compensation focal review program. The value of these grants is not included in the amount above, and the impact of these grants cannot be predicted at this time because it will depend on the number of share-based payments granted as part of the focal review program and the then current fair values. For an additional discussion of the effects of expensing of stock options, see “Recent Accounting Pronouncements,” below.

       Settlement Costs

      We recorded $110.0 million in settlement costs in 2005 primarily related to the settlement of securities class action litigation against us and certain of our current and former officers and directors. We recorded $68.7 million in settlement costs in 2004. Of that amount $60.0 million was related to the settlement of various litigation matters, and the remaining $8.7 million reflected settlement costs related to a claim arising from an acquisition and certain indemnification costs. For a more detailed discussion of our settled and outstanding litigation, see Note 12 of Notes to Consolidated Financial Statements.

       In-Process Research and Development

      IPR&D totaled $43.5 million and $63.8 million for acquisitions completed in 2005 and 2004, respectively. The amounts allocated to IPR&D were determined through established valuation techniques used in the high technology industry and were expensed upon acquisition as it was determined that the underlying projects had not reached technological feasibility and no alternative future uses existed. In accordance with SFAS No. 2, Accounting for Research and Development Costs, as clarified by FASB Interpretation, or FIN, No. 4, Applicability of FASB Statement No. 2 to Business Combinations Accounted for by the Purchase Method — an Interpretation of FASB

Statement No. 2, amounts assigned to IPR&D meeting the above-stated criteria were charged to expense as part of the allocation of purchase price.

      The fair value of the IPR&D for each of the acquisitions was determined using the income approach. Under the income approach, the expected future cash flows from each project under development are estimated and discounted to their net present values at an appropriate risk-adjusted rate of return. Significant factors considered in the calculation of the rate of return are the weighted-average cost of capital and return on assets, as well as the risks inherent in the development process, including the likelihood of achieving technological success and market acceptance. Each project was analyzed to determine the unique technological innovations, the existence and reliance on core technology, the existence of any alternative future use or current technological feasibility, and the complexity, cost and time to complete the remaining development. Future cash flows for each project were estimated based on forecasted revenue and costs, taking into account product life cycles and market penetration and growth rates.

      The IPR&D charges include only the fair value of IPR&D performed as of the respective acquisition dates. The fair value of developed technology is included in identifiable purchased intangible assets. We believe the amounts recorded as IPR&D, as well as developed technology, represent the fair values and approximate the amounts an independent party would pay for these projects at the time of the respective acquisition dates.

      The following table summarizes the significant assumptions at the acquisition dates underlying the valuations of IPR&D for our acquisitions completed in 2005 and 2004:

      We completed the development projects related to all of our 2004 acquisitions, except for Sand Video. In the case of Sand Video, we reallocated the resources to focus on semiconductor products that we believe are a higher priority. We also completed the development project related to the Zeevo acquisition. All other 2005 development projects are still in process.

      Except for the Sand Video project, actual results to date have been consistent, in all material respects, with our assumptions at the time of the acquisitions. The assumptions consist primarily of expected completion dates for the IPR&D projects, estimated costs to complete the projects, and revenue and expense projections for the products once they have entered the market.

      As of the respective acquisition dates of the 2005 and 2004 acquisitions, certain ongoing development projects were in process. Research and development costs to bring the products of the acquired companies to technological feasibility are not expected to have a material impact on our results of operations or financial condition.

      The following table presents impairment of goodwill and other intangible assets for 2005 and 2004:

      We performed annual impairment assessments of the carrying value of goodwill recorded in connection with various acquisitions as required under SFAS No. 142, Goodwill and Other Intangible Assets, or SFAS 142, in October 2005 and 2004. Upon completion of the 2005 and 2004 annual impairment assessments, we determined no impairment was indicated as the estimated fair values of our four reporting units, determined and identified in accordance with SFAS 142, exceeded their respective carrying values.

      We estimated the fair values of our reporting units primarily using the income approach valuation methodology that includes the discounted cash flow method, taking into consideration the market approach and certain market multiples as verification of the values derived using the discounted cash flow methodology. The discounted cash flows for each reporting unit were based on discrete four year financial forecasts developed by management for planning purposes and consistent with those distributed to our Board of Directors. Cash flows beyond the four year discrete forecasts were estimated using a terminal value calculation, which incorporated historical and forecasted financial trends for each identified reporting unit and considered long-term earnings growth rates for publicly traded peer companies. Future cash flows were discounted to present value by incorporating the present value techniques discussed in FASB Concepts Statement 7, Using Cash Flow Information and Present Value in Accounting Measurements, or Concepts Statement 7. Specifically, the income approach valuations included reporting unit cash flow discount rates ranging from 13% to 17%, and terminal value growth rates ranging from 0% to 10%%. Publicly available information regarding the market capitalization of our company was also considered in assessing the reasonableness of the cumulative fair values of our reporting units estimated using the discounted cash flow methodology.

      In November 2005 we acquired an issued U.S. patent, with various foreign counterparts, related to integrated circuit package testing for $0.5 million. In January 2004 we acquired approximately 80 patents and patent applications related to the read channel and hard disk controller market for $18.0 million. The immediate purpose for acquiring these patent portfolios was to assist us in the defense and settlement of then ongoing and future intellectual property litigation. As a result, we were unable to estimate any future cash flows from the patents. We also did not have any plans to resell the patents to a third party. Due to our intended use for these assets, we concluded that indicators of impairment existed upon acquisition of the patents because the carrying value of the patents might not be recoverable. Upon determining that indicators of impairment existed, we performed recoverability tests in accordance with SFAS No. 144, Accounting for the Impairment or Disposal of Long-Lived Assets, or SFAS 144. Estimates of future cash flows used to test the recoverability of long-lived assets should include only the future cash flows that are directly associated with, and that are expected to arise as a direct result of the use and eventual disposition of the asset. The only cash flows expected to arise as a direct result of the use of the patents are the cash savings expected to result from reduced but undeterminable litigation expenses over the next several years. Due to the unpredictable nature of legal disputes, it is not possible to reasonably: (i) determine if our strategy with respect to the patents will be successful, (ii) forecast litigation expenses that would have been incurred if the patent portfolio was not acquired, or (iii) forecast cash flows generated as a result of acquiring the patents. As a result, no reasonable analysis could be prepared to support future cash flows associated with the patents. Accordingly, pursuant to SFAS 144 the patents were determined to be fully impaired at their respective dates of acquisition. The impairment charge for the patent portfolio was classified as an impairment of goodwill and other intangible assets in the consolidated statements of operations in 2004.

      See Notes 1 and 9 of Notes to Consolidated Financial Statements for a further discussion of impairment of goodwill and other intangible assets.

      For a discussion of activity and liability balances related to our past restructuring plans, see Note 10 of Notes to Consolidated Financial Statements.

      The following table presents interest and other income, net, for 2005 and 2004:

      Interest income, net, reflects interest earned on cash and cash equivalents and marketable securities balances. The increase in interest income, net, was the result of an overall increase in our cash and marketable securities balances and an increase in market interest rates. Our cash and marketable securities balances increased from $1.276 billion at December 31, 2004 to $1.876 billion at December 31, 2005. The weighted average interest rates earned for 2005 and 2004 were 3.48% and 1.73%, respectively.

      Other income, net, primarily includes recorded gains and losses on strategic investments as well as gains and losses on foreign currency transactions and dispositions of property and equipment. We recognized gains from sales of strategic investments in the amounts of $1.2 million and $5.2 million in 2005 and 2004, respectively.

      The following table presents the provision for income taxes for 2005 and 2004: