BCM1112 データシートの表示（PDF） - Broadcom Corporation

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BCM1112

VOICE OVER IP CPE ENGINE

Broadcom Corporation 

BCM1112

®

VOICE OVER IP CPE ENGINE

FEATURES

SUMMARY OF BENEFITS

• The BCM1112 is the most highly integrated silicon solution for

Ethernet Residential Gateway and Stand-Alone Media

Terminal Adapter applications.

• The BCM1112 Integrates:

• 150-MHz MIPS32 CPU (165 DMIPS) with 8K I-cache and 4K

D-cache

• Superscalar 108-MHz ZSP DSP with dual-MAC (216 MIPS),

48K instruction and 32K data RAM

• Three-port 10/100BASE-T Ethernet switch with 64K buffer

memory

• Two 10/100BASE-T Ethernet PHYs with in-line power over

Ethernet support

• Three wideband audio ADCs and DACs

• Ethernet status LED driver

• TDM IOM-2® port

• Two UARTs

• Two high-speed serial ports

• General purpose I/O

• Interrupt control unit

• DMA support unit

• SDRAM interface

• External Bus Interface

• IEEE 1149.1 (JTAG)

• 0.18u process technology, 1.8/3.3V

• 1.1W peak, 0.3-0.8W standby modes

• 256-PBGA package enables 4-layer PCB designs

• Pin Compatible with BCM1101

• 10/100BASE-T Ethernet Switch with 802.1p/Q Support

• 802.1p Ensures QoS for voice packets and minimizes latency

• 802.1Q VLAN support allows for segmenting physical

networks into multiple logical networks

• MIPS32 CPU not burdened by data packet processing, leaving

more cycles for application program

• Enables wire-speed non-blocking operation

• Blocks unnecessary traffic by learning local MAC addresses

• Segments network, preventing any restriction on number of

hops

• 150-MHz MIPS32 CPU and 108 MHz DSP Support

• In VoIP Gateway applications:

- Full SIP client implementation

- G.711, G.726, G.729A/AB and G.723.1/A

- Fax relay (T.38, V.17, V.29, V27ter)

- Two voice channels, or one voice channel and one fax

channel, and a third channel limited to G.711 voice

• 10/100BASE-T Ethernet MACs and PHYs

• Integrates support for Modified Link Pulse in-line power

specification

• Compliant with 802.3af power over Ethernet standard

• Provides Auto MDI/MDIX enabling the use of straight or

crossover cables in either port

• Wideband Audio CODECs

• Enables support of emerging wideband vocoding standards

HARDWARE PLATFORMS

• BCM91112SMTA Reference Platform

• Ethernet Residential Gateway reference design

• PacketCable SMTA reference design

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