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| BCM3348 PRODUCT (R) Brief OF BENEFITS QAMLink(R) DOCSISTM 2.0 HIGH-PERFORMANCE, SINGLE-CHIP CABLE MODEM BCM3348 FEATURES SUMMARY State * cable of the art, single chip DOCSIS/EuroDOCSIS 2.0 modem providing unprecedented levels of Results in simplified BOM--reduces component * improves assembly process and results in lowest count, * * Advanced QAMLink integration and performance The BCM3348 integrates: * Advanced RF and control interface to silicon tuner for DOCSIS/EuroDOCSIS solutions * EJTAG embedded ICE support * On-chip support for PROPANE packet acceleration * Sixth-generation technology * On-chip regulation support single voltage operation * 352-pin PBGA package TM (R) transceiver supporting Annex A/B/C operation * DOCSIS/EuroDOCSIS 2.0 MAC * High performance 200-MHz MIPS32TM CPU * Advanced QAMLinkTM downstream demodulator, supporting 4/16/32/64/128/256/512/1024-QAM * Advanced QAMLink upstream modulator, supporting 2/4/8/16/64/128/256-QAM wth S-CDMA * Upstream power amplifier * 10/100 Ethernet MAC/PHY with MII interface * Single 28-MHz reference crystal * USB 1.1 slave port with integrated transceiver * 100-MHz SDRAM interface * * * * * * * * overall system cost for DOCSIS/ EuroDOCSIS 2.0 cable modem DOCSIS 1.1 Mac provides compatibility with existing CM applications code resulting in minimum time-to-market 200-MHz MIPS32TM CPU provides 40% improvement in packet throughput over previous generations Advanced QAMLink(R) modulator/demodulator provides superior performance in noisy plant environment On-chip PROPANE supports DOCSIS/EuroDOCSIS compatible packet acceleration Integrated 10/100 Ethernet MAC/PHY with MII eliminates the need for external Ethernet support Fully USB 1.1 compliant interface enables simple Plug and Play installations EJTAG embedded ICE support is compatible with existing MIPS32 development tools improving software development and testing Sixth-generation technology results in a highly-stable, reliable product High-Performance, Single-Chip DOCSIS/EuroDOCSIS 2.0 Cable Modem SDRAM DIPLEXER Silicon Tuner SAW BCM3348 High-Performance Single-Chip DOCSIS/EuroDOCSIS 2.0 Cable Modem 10/100 Ethernet Medium Speed USB 2.0 Flash BCM3348 OVERVIEW USB Isolation 64-MB 100-MHz SDRAM 8-MB FLASH 10/100 Ethernet Isolation Ethernet Transceiver Ethernet MAC USB MAC 16-bit SDRAM Interface EBI/PCMCIA Expansion Module Coaxial cable Power Amplifier DiPlexer Filter Peripheral Logic 100-MHz ISB Advanced Modulator QPSK-256-QAM Advanced Demodulator 16-1024-QAM Transmission Convergence Module DOCSIS 2.0 MAC Module 200-MHz MIPS32 Core with MMU SPI I/F Serial FLASH (optional) Silicon Tuner 8/8-KB I/D Cache BCM3348 The BCM3348 Media Access Controller (MAC) includes all features required for full DOCSIS 1.0, 1.1 and 2.0 compliance, including full support for baseline privacy (BPI+) encryption and decryption. Single-user support includes 4 SIDS in downstream, 4 DA perfect-match filters, a 256-entry CAM for multicast/unicast hash filter, and 4 independent upstream queues for simultaneous support of QoS and BE traffic. To enhance operational support, the BCM3348 MAC provides extended network management MIB/diagnostic features, as well as immediate UCC (on-the-fly) using independent resets for downstream and upstream and both individual queue reset/flush for upstream queues. The BCM3348 uses advanced PROPANE techniques to provide packet acceleration to significantly improve upstream channel utilization. With the incorporation of an upstream power amplifier, the BCM3348 allows a complete cable modem to be assembled with a minimal set of external components. When used with the silicon tuner, the BCM3348 offers the lowest-price solution for a high performance, single-user DOCSIS 2.0 cable modem. The BCM3348 combines an RF receiver with an advanced QAM and S-CDMA demodular, an advanced QAM transmitter, a complete DOCSIS 2.0 Media Access Controller (MAC), a 200-MHz MIPS32TM communication processor, a 16-bit, 100-MHz SDRAM interface, 10/100 Ethernet MAC with integrated transceiver and MII Interface, and a medium-speed USB 2.0 controller with integrated transceiver. The QAM receiver directly samples a tuner output with a 11-bit A/D converter and input ACG amplifier. The receiver digitally resamples and demodulates the signal with recovered clock and carrier timing, filters and equalizes the data and passes soft decisions to an ITU-T J.83 Annex A/B/C compatible decoder. The receiver supports variable symbol rate 4/16/32/64/128/256/512/1024-QAM FEC decoding. The final received data stream is delivered in a serial MPEG-2 transport format. All gain, clock, and carrier, acquisition and tracking loops are integrated in the QAM receiver. The upstream transmitter takes burst or continuous data, provides FEC encoding and pre-equalization for DOCSIS applications, filters and applies 2/4/8/16/64/128/256-QAM or S-CDMA, modulation to the data stream, amplifies the signal through the integrated upstream power amplifier and provides a direct 0-65 MHz analog output. Broadcom(R), the pulse logo, PROPANETM, QAMLink(R), 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) 2002 by BROADCOM CORPORATION. All rights reserved. 3348-PB02-403-R 11.26.02 Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com |
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