BCM3345
PRODUCT
®
Brief
O F
B E N E F I T S
QAMLINK
®
HIGH-PERFORMANCE, SINGLE-CHIP CABLE MODEM
B C M 3 3 4 5
F E AT U R E S
S U M M A R Y
State-of-the-art, single-chip DOCSIS/EuroDOCSIS
•
1.0/1.1 cable 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 BCM3345 integrates:
®
transceiver supporting Annex A/B/C
•
Advanced RF and control interface to silicon tuner for
DOCSIS/EuroDOCSIS solutions
•
EJTAG embedded ICE support
•
On-chip support for Propane packet acceleration
•
1.8/3.3 volt operation
•
312-pin PBGA package
TM
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
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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.
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
BOARDCOM [ Broadcom Corporation. ]
