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| BCM3300 PRODUCT (R) Brief OF BENEFITS BCM3300 QAMLink(R) SINGLE-CHIP DOCSIS CABLE MODEM BCM3300 FEATURES SUMMARY * Integrated QAMLink Receiver * * * * * * * * * Integrated Upstream Transmitter 10-bit A/D converter with input AGC amplifier Variable symbol rate 256 QAM receiver Digital demodulator, Nyquist filters, tracking loops and 32-tap adaptive decision feedback equalizer ITU-T J.83 Annex A/B/C compatible FEC Programmable FEC encoder Pre-equalizer filter QPSK/16 QAM burst modulator 10-bit D/A converter with output power control * Fully-integrated, DOCSIS-compliant PHY/ MAC integrated circuit * Reduces overall system cost * Simplifies system, board and software design * Reduces power consumption * Single crystal design with direct IF sampling * Complete Media Access Control (MAC) function for * Baseline privacy encryption and decryption * Hardware processing, enabling real-time * * * * * * encryption keys with initialization vectors 40-bit DES version available for export MCNS-compliant cable modem * Ensures interoperability in consumer-grade products. * Integrated DOCSIS Media Access Controller (MAC) over IP (VoIP) applications Support for 16 destination address and 256 multicast address filters Four simultaneous upstream SIDS multiplexed to 16 * Support for up to 16 SIDs and 16 56-bit DES * DOCSIS version 1.0 and 1.1 compliant * Supports for fragmentation and concatenation * Supports enhanced Quality of Service (QoS) for Voice * * * Termination of MPEG-2 transmission convergence * CPU Interfaces Processor * Motorola MC68360, MPC850 PowerPC * IDT79R3081 MIPS, BCM3310 Communications sublayer Generation/verification of CRC and HCS Extraction and processing of time stamps and system timing MAP message handling and upstream bandwidth requests MAC layer fragmentation in hardware Extensive address filtering * 3.3V Operation * 256-pin BGA package DOCSIS-Compliant External Cable Modem 5-42 MHz PA Serial 1,2 DRAM LPF FLASH Control BCM3310 Diplex Filter SRAM BCM3300 Single-Chip MCNS/DOCSIS Cable Modem USB Ethernet BCM5201 10/100BT XCVR USB XCVR RJ-45 54-860 MHz RF Tuner SAW USB BCM3300 OVERVIEW Variable Interpolator 0 - 65 MHz RF Amp 10-bit D/A Amp Control DDS Variable Interpolator ==.25-.50 Pre Equalizer Nyquist ==.25-.50 ==.12-.18 Nyquist Nyquist Starvue MCNS DAVIC FEC Upstream Processor DES Encryption MAP Processor Tuner 36/44 MHz IF Tuner Control 10-bit A/D Variable Interpolator DDS Variable Interpolator ==.12-.18 Nyquist Phase Recovery and 32-tap DFE ITU-T J.83 Annex A/B FEC Message Processor DMA and Memory Interface Shared SRAM Downstream Processor DES Decryption MPEG-2 I/F Tuner AGC Acquisition and Tracking Loops RAM JTAG CPU I/F Expansion RAM I/F JTAG IF CPU I/F The Broadcom(R) BCM3300 combines a 256-QAM receiver, a 4/16-QAM burst transmitter and a complete DOCSIS compliant MAC integrated into a single chip. The BCM3300 is the world's first and only single chip, DOCSIS version 1.0 and 1.1 compliant solution with extensions for fragmentation and Quality of Service (QoS). The receiver directly samples a tuner output, digitally resamples and demodulates the signal with recovered clock and carrier timing, filters and equalizes the data, passing soft decisions to an ITU-T J.83 Annex A/B/C compatible decoder. The upstream transmitter takes burst or continuous data, provides FEC encoding and pre-equalization for DOCSIS or DVB/DAVIC applications, filters and modulates the data stream and provides a direct 0 - 65 MHz analog output. The MAC includes baseline privacy encryption and decryption, transmission convergence sub-layer support, a TDM/TDMA framer and a scatter/gather DMA interface. The MAC in the BCM3300 is also the only DOCSIS compliant device that implements version 1.0 and 1.1 functionality providing extended functions for fragmentation, concatenation and multiple SIDs, enabling full support for Quality of Service applications such as Voice over IP. The BCM3300 represents the first silicon solution that integrates the key DOCSIS physical and MAC layer functions into a single, integrated chip, enabling the the lowest cost system implementation in the industry Ordering Information: BCM3300KTB Broadcom(R), the pulse logo, and Connecting everything(R) are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners. (R) BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 (c) 2003 by BROADCOM CORPORATION. All rights reserved. 3300-PB03-R 06.25.03 Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com |
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