Broadcom Powers ADC, ARRIS, Cisco with DOCSIS 2.0 Cable Model Chips

6/12/2003 - Broadcom Corporation (Nasdaq: BRCM), the leading provider of silicon solutions enabling broadband communications, announced the industry’s first DOCSIS®/Euro-DOCSISTM 2.0-based CMTS chipset to enable 40 Megabits per second (Mbps) symmetrical interactive services over cable networks. ADC Telecom, ARRIS and Cisco Systems are planning to use Broadcom’s new chips for their next-generation CMTS DOCSIS 2.0-based equipment.

The DOCSIS 2.0 specification adds advanced digital modulation capabilities to cable modems and headend equipment, enabling cable companies to triple the speed of the return (or upstream) path of their DOCSIS 1.1-based networks. Differing from competing solutions, Broadcom’s chipset is the only CMTS solution that offers advanced line rate capabilities in the return path of up to 40 Mbps, which is beyond the maximum specified DOCSIS 2.0 line rate of 30 Mbps.

The improvement in performance resulting from Broadcom’s chipset will enable cable operators to cost effectively upgrade their headend equipment to manage faster line speeds for interactive services requiring symmetrical upstream and downstream bandwidth. These new services include secure virtual private networks (VPNs) for telecommuters, full-featured IP telephony, videoconferencing, local web hosting, and peer-to-peer networking applications, such as those provided by Windows XP® instant messaging features, music downloads and file sharing. With reliable, symmetrical network services using equipment based on Broadcom’s advanced DOCSIS 2.0-based CMTS chipset, cable operators will also be able to broaden their customer base to include commercial businesses.

“Broadcom’s new DOCSIS 2.0-based CMTS chipset complements our existing BCM3348 DOCSIS 2.0-based cable modem chip, which has been widely adopted by the industry and is being used by top suppliers of DOCSIS 2.0 certified modems,” said Rich Nelson, Vice President of Marketing for Broadcom’s Broadband Communications Business Unit. “These products provide a complete end-to-end DOCSIS 2.0-based silicon solution with advanced capabilities that will enable operators to economically and reliably expand their broadband services to support lucrative interactive applications for both residential and commercial business customers.”

Broadcom’s CMTS chipset consists of the Broadcom® BCM3214 QAMLink® media access controller (MAC), the BCM3140 QAMLink Dual A-TDMA/S-CDMA burst receiver, and the BCM3040 QAMLink modulator. Broadcom’s TurboQAMÔ technology enables upstream line rates of up to 40 Mbps and downstream operation up to 100 Mbps. The chipset also incorporates support for Broadcom’s unique packet-acceleration software, Propane®, which greatly enhances the upstream throughput of the cable network. With these advanced data rates, cable operators will be able to deliver more broadband services at a lower cost while conserving valuable equipment space in the headend.

Broadcom’s CMTS chipset also provides advanced ingress and impulse noise mitigation technologies for both A-TDMA (advanced time division multiple access) and S-CDMA (synchronous code division multiple access) modes – the two communication technologies required by the DOCSIS 2.0 specification. With these capabilities, operators can utilize the full capacity of their networks with the ability to deliver reliable, fast interactive services even when using a plant spectrum below 15 MHz, which is typically not used today for high-speed services.

CMTS Chipset Product Information
The BCM3214 is an advanced CMTS MAC chip that supports all of the upstream and downstream management features for DOCSIS 2.0 CMTS headend applications. The chip can process up to 400,000 packets per second in the aggregate over all upstream and downstream channels. It directly interfaces to Broadcom’s BCM3040 and BCM3140 and supports Broadcom’s Propane packet acceleration technology. The chip has both a PCI and Gigabit Ethernet interface connection for traditional CMTS and deep fiber architectures.

The BCM3140 is a dual A-TDMA/S-CDMA physical layer burst receiver chip supporting DOCSIS 2.0-based equipment. The chip incorporates Broadcom’s TurboQAM technology in upstream transmission, enabling 40 Mbps operation. In addition, the chip contains advanced ingress cancellation for both S-CDMA and A-TDMA PHY technologies. The BCM3140 also has integrated spectrum management (FFT), enabling dynamic allocation of physical layer metrics for optimizing service based on specific plant conditions.

The BCM3040 is an advanced DOCSIS 2.0-based modulator chip. It supports symbol rates up to 10 Mbaud and modulation formats up to 1024-QAM, enabling up to 100 Mbps downstream operation. The chip also incorporates an extended ITU-T J.83 Annex A/B/C FEC encoder and a 10-bit D/A converter with power control.

BCM93214 Advanced DOCSIS/Euro-DOCSIS 2.0-based CMTS Evaluation System
To reduce customers’ time to market of their next-generation CMTS solutions, Broadcom also has available a BCM93214 DOCSIS/Euro-DOCSIS 2.0-based CMTS evaluation system that supports six upstream channels and one downstream channel. The BCM93214 is ideal for evaluating advanced CMTS technology for use in cable modems and VoIP (Voice over Internet Protocol) telephony products. It also enables complete cable upstream and downstream DOCSIS 2.0 testing and evaluation.

The reference design incorporates the Broadcom CMTS chipset, as well as the Broadcom BCM1250 64-bit MIPS-basedTM broadband processor, featuring two MIPS64TM CPU cores each running at 750 MHz, for performing DOCSIS scheduling and other network functions. It also includes all software drivers along with board level schematics and Gerber files, PC software applications for running test functions and scripts, and PC software API for register, memory and control access.

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®, QAMLink®, PROPANE®, TurboQAMTM and SystemI/OTM are trademarks of Broadcom Corporation and/or its affiliates in the United States and certain other countries. DOCSIS® and Euro-DOCSISTM are trademarks of Cable Television Laboratories, Inc. Windows XP® is a trademark of Microsoft Corporation. MIPS-basedTM and MIPS64TM are trademarks of MIPS Technologies, Inc.

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