BCM1101 Просмотр технического описания (PDF) - Broadcom Corporation

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BCM1101

ENTERPRISE IP PHONE CHIP

Broadcom Corporation 

OVERVIEW

BCM1101 VoIP Ethernet CPE Engine

Master SPI

Port

UART 0 UART 1

18 GPIOs

External

Interrupt

Controller

Keypad Scan Controller

[or 18 GPIOs]

Peripheral Bus

IPB

Bridge

Watchdog

Timer

Timers

Analog Processor Module

CODEC Channel 3

CODEC Channel 2

CODEC Channel 1

16-bit D/A

16-bit A/D

MIPS JTAG

ZSP JTAG

48 KB of

Program

Memory

32 KB of

Data

Memory

MIPS32 CPU

+ 8K I-Cache

+ 4K D-Cache

ZSP DSP

10/100BASE-T

Auto-MDIX PHY

10/100BASE-T

Auto-MDIX PHY

port 0

port 1

Three-Port

Ethernet

Switch

port 2

High

Speed

Serial

Port 2

High

Speed

Serial

Port 1

TDM

(IOM-2)

Port

50-MHz

External Bus

Interface

SDRAM

Interface

Ethernet LED

Driver

64 KB of

Buffer Memory

DMA Arbiter

Flash/

EPROM

SDRAM

The Broadcom BCM1101 represents a new level of integration for

feature enhanced Ethernet IP phone products.

Key modules integrated in the BCM1101 include:

• MIPS32 150-MHz processor with 8K 2-way set associative I-cache

and a 4K 2-way associative D-cache. This MCU supports the VoIP

protocol stacks, jitter buffer management, and application program.

Programming is done in C, on top of Broadcom’s object-oriented

signal processing API.

• ZSP 108-MHz DSP with 48-KB instruction and 32-KB data RAM.

The DSP supports a wide range of vocoders, acoustic echo

cancellation for full-duplex speakerphone, fax modems, and a variety

of telephony algorithms (e.g., DTMF and Call Progress Tones).

• Analog codecs. Three ADCs and DACs are integrated, eliminating

the need for an analog switch to allow the sharing of a codec between

multiple interfaces.

• 10/100BASE-T Ethernet switch, media access controllers, and

transceivers. The three-port Ethernet switch integrates three full-

duplex capable Media Access Controllers (MACs), a serial

management port, an address resolution engine, a non-blocking

switch controller, 64K of internal switch memory, 802.1p

prioritization for voice packets, 802.1Q VLAN support for

segmenting physical networks into multiple logical networks, and a

set of Management Information Base (MIB) statistics registers. The

two transceivers perform all of the functions for 100BASE-T

Ethernet in full- or half-duplex mode over Category (CAT) 5 twisted

pair cable and 10BASE-T Ethernet in full- or half-duplex mode over

CAT 3, 4, or 5 twisted pair cable. They support auto-MDI/MDIX

detection to allow the use of any cable type in either port. The

transceivers also integrate support for in-line powering over Ethernet.

The BCM1101 represents the first silicon solution that integrates all the

key silicon components of an Ethernet IP Phone into a single device,

thereby reducing the overall system cost and complexity of Enterprise IP

Phone products, while at the same time increasing their voice quality and

the reliability of the network to which they are attached.

Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, and BroadVoice®

are trademarks of Broadcom Corporation and/or its affiliates in the United States, EU and/or certain other

countries. Any other trademarks or trade names mentioned are the property of their respective owners.

®

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2005 by BROADCOM CORPORATION. All rights reserved.

1101-PB08-R

02/01/05

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

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