B C M 3 3 4 5 F E A T U R E S
SDRAM
FLASH
Diplexer
SAW
Silicon
Tuner
10/100
Ethernet
USB 1.1
BCM3345
High Performance
Single Chip
DOCSIS/EuroDOCSIS 1.1
Cable Modem
High-Performance, Single-Chip DOCSIS/EuroDOCSIS 1.1 Cable Modem
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 QAMLink
TM
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.
S U M M A R Y O F B E N E F I T S
QAMLINK
HIGH-PERFORMANCE, SINGLE-CHIP CABLE MODEM
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 Propane
TM
packet acceleration
1.8/3.3 volt operation
312-pin PBGA package
PRODUCT
PRODUCT
Brief
Brief
B C M 3 3 4 5
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