BCM1115R View Datasheet(PDF) - Broadcom Corporation

Part Name

Description

Manufacturer

BCM1115R

SINGLE-PORT, FEATURE REDUCED VOICE OVER IP ETHERNET CPE ENGINE

Broadcom Corporation 

OVERVIEW

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 2

CODEC Channel 1

16-bit D/A

16-bit A/D

MIPS JTAG

48 KB of

Program

Memory

32 KB of

Data

Memory

MIPS32 CPU

+ 8K I-Cache

+ 4K D-Cache

ZSP JTAG

ZSP DSP

10/100BASE-T

Auto-MDIX PHY

10/100BASE-T Ethernet MAC

802.1p/Q support

High

Speed

Serial

Port 2

High

Speed

Serial

Port 1

TDM

(IOM-2)

Port

50-MHz

External Bus

Interface

SDRAM

Interface

Ethernet LED

Driver

DMA Arbiter

Flash/

EPROM

SDRAM

Broadcom's BCM1115R is designed for use in feature-reduced, cost-

sensitive, single Ethernet port consumer and Enterprise IP Phone and

Gateway products.

Key modules integrated in the BCM1115R include:

• MIPS32™ 87.5-MHz processor with 8K 2-way set associative

I-cache and 4K 2-way associated D-cache. This MCU supports the

VoIP protocol stacks, VxWorks operating system, and customer

application software. Programming is done in C, on top of

Broadcom's object-oriented signal processing API.

• ZSP 87-MHz DSP with 48-KB instruction and 32-KB data RAM.

The DSP can support narrowband voice communication using G.711,

G.726, G.723.1/A, G.729A/AB, or BroadVoice16, and wideband

communications using G.722 or BroadVoice32. Full-duplex

speakerphone capability is supported in conjunction with any of these

voice compression techniques for IP Phone designs. The DSP also

supports enhanced Packet Loss Concealment, Jitter Buffer, fax relay

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

• Analog codecs: Two integrated analog CODECs capable of

supporting both narrowband 8 Kilohertz (KHz) and wideband 16 KHz

sampling, which, in conjunction with wideband voice coders, such as

Broadcom's BroadVoice32, will enable IP phone networks to deliver

high fidelity voice transmission.

• 10/100BASE-T Media Access Controller and Transceiver. The

Media Access Controller (MAC) supports 802.1p prioritization of

voice packets and 802.1Q VLAN support for segmenting physical

networks into multiple logical networks. The transceiver performs all

of the functions for 100BASE-T Ethernet in full- or half-duplex mode

over Category (CAT) 5 twisted pair cabling and 10BASE-T Ethernet

in full- or half-duplex mode over CAT 3, 4, or 5 twisted-pair cable.

The PHY also supports auto-MDI/MDIX detection to allow the use of

any cable type. The transceiver integrates support for in-line powering

over Ethernet.

The BCM1115R is pin and software compatible with the BCM1101 and

BCM1112 ICs suited for IP Phone and Terminal Adapter products that

require basic application features sets, while still requiring the same

voice quality and reliability of higher end products.

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

BroadVoice16™, and BroadVoice32™ are trademarks of Broadcom Corporation and/or its subsidiaries in

the United States and certain other countries. All other trademarks 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.

1115R-PB01-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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