bcm1112 Broadcom Corp., bcm1112 Datasheet
bcm1112
Manufacturer Part Number
bcm1112
Description
Bcm1112 - Voip Cpe Engine
Manufacturer
Broadcom Corp.
Datasheet
1.BCM1112.pdf
(2 pages)
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BCM91112SMTA Reference Platform
• Ethernet Residential Gateway reference design
• PacketCable SMTA reference design
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
• Superscalar 108-MHz ZSP DSP with dual-MAC (216 MIPS),
• Three-port 10/100BASE-T Ethernet switch with 64K buffer
• Two 10/100BASE-T Ethernet PHYs with in-line power over
• Three wideband audio ADCs and DACs
• Ethernet status LED driver
• TDM IOM-2
• 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
D-cache
48K instruction and 32K data RAM
memory
Ethernet support
H A R D W A R E P L A T F O R M S
®
port
F E A T U R E S
®
VOICE OVER IP CPE ENGINE
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BCM1112
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
• MIPS32 CPU not burdened by data packet processing, leaving
• Enables wire-speed non-blocking operation
• Blocks unnecessary traffic by learning local MAC addresses
• Segments network, preventing any restriction on number of
150-MHz MIPS32 CPU and 108 MHz DSP Support
• In VoIP Gateway applications:
10/100BASE-T Ethernet MACs and PHYs
• Integrates support for Modified Link Pulse in-line power
• Compliant with 802.3af power over Ethernet standard
• Provides Auto MDI/MDIX enabling the use of straight or
Wideband Audio CODECs
• Enables support of emerging wideband vocoding standards
networks into multiple logical networks
more cycles for application program
hops
- 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
specification
crossover cables in either port
S U M M A R Y O F B E N E F I T S
channel, and a third channel limited to G.711 voice
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bcm1112 Summary of contents
Page 1
... VOICE OVER IP CPE ENGINE • 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 • ...
Page 2
... The transceivers also integrate support for in-line powering over Ethernet. The BCM1112 integrates all the key silicon components of an Ethernet IP Gateway into a single device, thereby reducing the overall system cost and complexity of Terminal Adapter products, while at the same time increasing their voice quality and the reliability of the network to which they are attached ...