INTRODUCTION

The ADSP-21mod870-110 is a complete single chip. All datapump and controller functions are implemented on a single 0.4 square-inch chip. This modem package allows the highest modem port density, while achieving the lowest power consumption in a software upgradable platform.

FEATURES

ISDN B-Channel HDLC

DATA Modulations

CCITT V.90 (30k–56k)

K56Flex™ (30k–56k)

ITU-T V.34: 33600 Bits/s–2400 Bits/s

CCITT V.32bis: 14400 Bits/s–7200 Bits/s

CCITT V.32: 9600 Bits/s, 4800 Bits/s

CCITT V.23

CCITT V.22/V.22bis: 2400, 1200, 600 Bits/s

CCITT V.21: 300 Bits/s

Bell 212A: 1200 Bits/s

Bell 103: 300 Bits/s

Start-Up Procedures:

ITU-T V.8

Error Correction and Data Compression:

CCITT V.42 Error Correction (LAPM and MNP2-4)

CCITT V.42bis Data and MNP Class 5 Compression

FAX Modem

V.17/V.29/V.27ter/V.21 Channel 2

T.30 Protocol

V.120

V.110

PPP Asynchronous Framing Support (RFC 1662)

Low Power

80 mW Typical Active

Low Power and Sleep Modes

High Density

100-Lead LQFP Package

On-Chip DS0/DS1 Interface

Full Function DMA Port

No External Memory Required

0.4 Square Inch per Complete Modem Port

3.3 V Supply

Fully Upgradable RAM-Based Architecture

Fast Download

Full Image in 5 ms

High Speed 16-Bit Port Link Bus Provides Simple

Interface Between Host and Modem Pool