bcm3345 Broadcom Corp., bcm3345 Datasheet

bcm3345

Manufacturer Part Number

bcm3345

Description

Qamlink High Performance Single Chip Cable Modem

Manufacturer

Broadcom Corp.

Datasheet

1.BCM3345.pdf (1 pages)

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QAMLINK

•

1.0/1.1 cable modem providing unprecedented levels of

integration and performance

The BCM3345 integrates:

• Advanced QAMLink

• DOCSIS/EuroDOCSIS 1.0/1.1 MAC

• High-performance, 140-MHz MIPS-32 CPU

• Advanced QAMLink‚ downstream demodulator, supporting

• Advanced QAMLink upstream modulator, supporting

• 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

State-of-the-art, single-chip DOCSIS/EuroDOCSIS

EJTAG embedded ICE support

On-chip support for Propane

1.8/3.3 volt operation

312-pin PBGA package

operation

4/16/32/64/128/256 QAM

2/4/8/16 QAM

B C M 3 3 4 5

High-Performance, Single-Chip DOCSIS/EuroDOCSIS 1.1 Cable Modem

HIGH-PERFORMANCE, SINGLE-CHIP CABLE MODEM

Diplexer

transceiver supporting Annex A/B/C

F E A T U R E S

packet acceleration

Silicon

Tuner

SAW

PRODUCT

DOCSIS/EuroDOCSIS 1.1

High Performance

BCM3345

Cable Modem

Single Chip

SDRAM

FLASH

•

Advanced QAMLink

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.

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

BCM3345

Brief

modulator/demodulator

O F

10/100

Ethernet

USB 1.1

B E N E F I T S

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