Links.................
cabledatacomnews.com
Broadcom's Docsis customers.................
Irvine, Calif.-based Broadcom Corp. has outpaced larger rivals to become the leading supplier of silicon in the broadband digital communications market. Cable modem manufacturers Com21, General Instrument, and Motorola have all used a QAM chipset from Broadcom in their proprietary products. Additionally, a long list of DOCSIS cable modem vendors are using Broadcom chips, including 3Com, Cisco Systems, E-Tech, General Instrument, Nortel Networks, Samsung, Sony, and Thomson Consumer Electronics.
Broadcom first offered a three-chip DOCSIS cable modem solution, including the BCM3116 64/256QAM demodulator, BCM3037 16QAM/QPSK burst modulator, and BCM3220 DOCSIS 1.0 cable modem MAC. By the end of 1998, Broadcom integrated these components into a single-chip, dubbed the BCM3300, also adding so-called DOCSIS 1.1 MAC features intended to support IP telephony services.
Hitachi's modem chips.........................
Hitachi Semiconductor
Hitachi Semiconductor Inc. has introduced two DOCSIS-based physical-layer (PHY) transmission chips for cable modems and digital set-top boxes. Hitachi?s HD49430F is an integrated 256/64 QAM receiver with forward error correction. Hitachi is also offering a companion upstream chip, the HD49429F, which supports QPSK, 16 QAM and p/4DQPSK modulation.
Cisco's platform..........................
cabledatacomnews.com
Askey, Philips, Samsung and Sony all built their cable modems by licensing Cisco's DOCSIS reference design. Their failure to gain certification in previous test waves had created friction with Cisco, an issue that is now put to rest.
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