Broadcom to Develop ADSL/VDSL Chips Using Discrete Multi-Tone Line Code

5/6/2003 - Broadcom Corporation (Nasdaq: BRCM), the leading provider of silicon solutions enabling broadband communications, announced that the company is developing combination ADSL/VDSL chips using the Discrete Multi-Tone (DMT) line code, the proven transmission standard for asymmetric digital subscriber line (ADSL).

Operating at speeds in excess of 70 Megabits per second (Mbps), DMT-based VDSL systems provide telephone carriers with enough bandwidth to support complete telephony, Internet and audio/video entertainment service packages while providing total interoperability and backward compatibility with existing DMT-based ADSL equipment.

DMT is the transmission technology that has been standardized worldwide for use in ADSL equipment and has over 35 million lines in service. The VDSL Alliance estimates that more than 100 million ports have been shipped to date.

“Given the rapid strides of state-of-the-art DMT, its extension for use in VDSL has been technically well proven,” said Dan Marotta, Vice-President and General Manager of Broadcom’s Broadband Business Unit. “It is also clear that DMT-based VDSL now offers DSL equipment vendors an unmatched value proposition.”

“For VDSL to evolve as a mainstream broadband technology, it is imperative that the modulation debate end, and the industry move forward with an agreed upon standard, ” said Matt Davis, Director, Broadband Access Technologies at the Yankee Group. “After being one of the first chip manufacturers to build a QAM-based VDSL system, Broadcom's decision to develop DMT-based products is a significant indication that the industry is ready to embrace the DMT modulation standard for VDSL.”

Broadcom’s chips will support standards-based interoperability with devices from a number of other DMT VDSL chipset vendors and will facilitate a smooth market transition from current QAM-based systems to higher performance, lower system cost DMT-based systems. These global chipset vendors, which together with Broadcom total more than six companies, are members of the VDSL Alliance, a group of leading international semiconductor and equipment suppliers promoting DMT-based VDSL for international deployment and standardization.

“There is intense pressure to reduce the operational costs of deploying DSL,” said Willem Verbiest, Vice-President of the Access Business Unit for Alcatel, the world leader in DSL with more than 23 million lines shipped. “We would welcome any access technology that is flexible enough to interoperate with the installed customer equipment base and provide an upgrade path for enhanced revenue generating services. DMT VDSL is a natural choice.” Alcatel is the worldwide leader in DSL, with 37.6% share of the global market.

Sumitomo Electric Networks Inc., which uses DMT VDSL chipsets from Ikanos Communications, welcomed Broadcom's decision as a positive development for the industry. “We are glad to see Broadcom's commitment to DMT VDSL. Broadcom's switch from QAM to DMT VDSL is an overall endorsement of DMT’s superior technology and reflects its increased market demand,” said Yoshikazu Nishiwaki, General Manager of the Strategic Planning Group. Sumitomo is a leading supplier of DSL equipment in Japan.

“We are pleased to see that Broadcom has decided to select DMT for its VDSL solutions,” said Richard Sekar, Ikanos’ Vice President of Marketing. “This announcement provides further validation that a unified approach to ADSL and VDSL using DMT technology presents the best outlook for the rapid evolution to widely deployed VDSL-enabled services.”

Broadcom will introduce standards-compliant multi-port central office (CO) and customer premises equipment (CPE) DMT ADSL/VDSL chipsets. These chipsets will offer all of the advanced features and functionality of its ADSL solutions while scaling up the performance, density and power efficiencies needed to address the combined ADSL/VDSL market.

Broadcom is a leading provider of ADSL integrated circuits, and a pioneer in the development of QAM-based VDSL chipsets. Its BladeRunnerTM chipset is the world’s first 12-port 2-chip ADSL CO solution, and the BCM6345 is the world’s first single-chip ADSL CPE router.

About Broadcom
Broadcom Corporation is the leading provider of highly integrated silicon solutions that enable broadband communications and networking of voice, video and data services. Using proprietary technologies and advanced design methodologies, Broadcom designs, develops and supplies complete system-on-a-chip solutions and related hardware and software applications for every major broadband communications market. Our diverse product portfolio includes solutions for digital cable and satellite set-top boxes; cable and DSL modems and residential gateways; high-speed transmission and switching for local, metropolitan, wide area and storage networking; home and wireless networking; cellular and terrestrial wireless communications; Voice over Internet Protocol (VoIP) gateway and telephony systems; broadband network processors; and SystemI/OTM server solutions. These technologies and products support our core mission: Connecting everything®. Broadcom is headquartered in Irvine, Calif., and may be contacted at 1-949-450-8700 or at

Broadcom®, the pulse logo, Connecting everything®, BladeRunnerTM and SystemI/OTM are trademarks of Broadcom Corporation and/or its affiliates in the United States and certain other countries.

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