BCM3341 データシートの表示（PDF） - Broadcom Corporation

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BCM3341

ADVANCED TWO-CHANNEL VOIP COPROCESSOR

Broadcom Corporation 

BCM3341

®

ADVANCED TWO-CHANNEL VOIP COPROCESSOR

FEATURES

• The BCM3341 VoIP coprocessor provides a seamless interface

to Broadcom’s PacketCable™ compliant cable modem devices,

enabling the industry’s lowest cost, modular VoIP cable modem

solution.

• The BCM3341 integrates:

• High-performance 266 DMIPS DSP

• FlexiVoice™ dual world linecard programmable codec

• Internal memory to support G.711 + 1 complex vocoder (2 lines

of either/or simultaneously)

• Memory expansion bus to support enhanced DSP features

• Vocoder Support:

- ITU G.7xx narrow, wideband, and complex vocoders

- Enhanced BroadVoice16™ and BroadVoice32™

- iLBC (internet Low Bitrate Codec)

• G.168 (2000) compliant echo cancellor

• DTMF/MF detection/relay and T.38 fax relay

• HVG circuit switch mode controller for hi/low battery

generation

• Battery sensing and monitoring inputs

• Extensive on-chip power management

• Single 3.3V power supply

• 0°C–70°C operation

SUMMARY OF BENEFITS

• Highest level of integration dramatically simplifies system

design, lowers part count, and reduces system cost

• Integrated memory

• Battery sensing eliminates expensive dual switching power

controller

• Enhanced reliability of voice services through powerful DSP

engine and voice algorithms deployed in millions of ports

worldwide.

• Enhances voice quality through advanced system features

• Patented PacketSync™ minimizes VoIP packet delays

• Power management engine reduces overall consumption

• Accepts DOCSIS® system clock reference for slip free

synchronization

• Seamless interface to additional Broadcom silicon

• BCM3349 low-cost VoIP cable modem or cable gateway

• Part of a comprehensive system solution including:

• Low-cost reference design with extensive documentation

• Comprehensive CablexChange® software

- Certifiable PacketCable implementation

- SIP, MGCP, H.323 call control applications

- Extensive G.7xx, BV16, BV32, iLBC vocoder support

Two-Channel VoIP Cable Modem

SDRAM

Silicon

Tuner

BCM3349

High Performance

Single Chip

DOCSIS/EuroDOCSIS 2.0

Cable Modem

USB 1.1

10/100 Ethernet

HI Bat

Low Bat

Flash

Wireless (optional)

CLK

PS

BCM3341

Dual

Dual Line

SLICS

VoIP

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