BCM3345 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – QAMLINK HIGH PERFORMANCE SINGLE CHIP CABLE MODEM

BCM3345
PRODUCT
®
Brief
QAMLINK^® HIGH-PERFORMANCE, SINGLE-CHIP CABLE MODEM
BCM3345 FEATURES
• State-of-the-art, single-chip DOCSIS/EuroDOCSIS
1.0/1.1 cable modem providing unprecedented levels of
integration and performance
• The BCM3345 integrates:
• Advanced QAMLink^® transceiver supporting Annex A/B/C
operation
• DOCSIS/EuroDOCSIS 1.0/1.1 MAC
• High-performance, 140-MHz MIPS-32 CPU
• Advanced QAMLink‚ downstream demodulator, supporting
4/16/32/64/128/256 QAM
• Advanced QAMLink upstream modulator, supporting
2/4/8/16 QAM
• Upstream power amplifier
• 10/100 Ethernet MAC/PHY with MII interface
• Single 28MHz reference crystal
• USB 1.1 slave port with integrated transceiver
• 100-MHz SDRAM interface
• Advanced RF and control interface to silicon tuner for
DOCSIS/EuroDOCSIS solutions
• ^{EJTAG embedded ICE support}
• ^{On-chip support for PropaneTM packet acceleration}
• ^{1.8/3.3 volt operation}
• ^{312-pin PBGA package}
SUMMARY OF BENEFITS
• Results in simplified BOM—reduces component count,
improves assembly process and results in lowest
overall system cost for DOCSIS/ EuroDOCSIS 1.0/1.1
cable modem.
• DOCSIS/EuroDOCSIS 1.0/1.1 MAC is compatible
with existing Cable Modem application code, resulting
in minimum time to market.
• 140-MHz MIPS-32 CPU provides 66% improvement
in packet throughput over prior generations.
• Advanced QAMLinkTM modulator/demodulator
provides superior performance in noisy plant
environments.
• On-chip Propane supports DOCSIS/EuroDOCSIS
based 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.
High-Performance, Single-Chip DOCSIS/EuroDOCSIS 1.1 Cable Modem
SDRAM
Diplexer
Silicon
Tuner
SAW
BCM3345
High Performance
Single Chip
DOCSIS/EuroDOCSIS 1.1
Cable Modem
10/100
Ethernet
USB 1.1
FLASH