DSP1648C Agere Systems, DSP1648C Datasheet

DSP1648C

Manufacturer Part Number

DSP1648C

Description

Host-Based Controller V.92 Modem Chip Set

Manufacturer

Agere Systems

Datasheet

1.DSP1648C.pdf (4 pages)

Current page: 1 of 4
Download datasheet (75Kb)

Features

Agere Systems DSP1648C

Host-Based Controller V.92 Modem Chip Set

Two chip 3.3 V PCI modem solution with

5 V tolerant buffers

Data mode capabilities:

— ITU-T V.92

— ITU-T V.90

— ITU-T V.34: 33600 bits/s—2400 bits/s

— V.32bis, and fallbacks

— V.42 and MNP

— V.44, V.42bis and MNP Class 5 data

FAX mode capabilities:

— ITU-T V.17, V.29, V.27ter, and V.21 Ch 2

— ITU-T T.31 Class 1 FAX

Compatible with transformer-based and silicon

DAA circuits:

— High-precision sigma-delta codec (CSP1034C)

— Line-powered silicon DAA (CSP1035A)

Enhanced voice features:

— Full-duplex speakerphone (requires CSP1027

— Telephone answering machine (TAM)

— Caller identification (caller-ID)

V.80 video-ready interface

Bit I/Os to support domestic and international

DAAs

Low power consumption

Flexible power management modes

Operating system support:

— Windows

— Linux

— PC 2001 compliant

compression

audio codec)

Windows ME, and Windows XP

: 56000 bits/s—28000 bits/s

95, 98, 2000, Windows NT

™

error correction (LAPM)

4.0,

Introduction

The DSP1648C, host-accelerated modem chip is an

exciting new upgrade to Agere Systems Inc. line of

host-based controller modems. The DSP1648C

upgrades the technologies found in the DSP1648

V.90 modem solution to the new ITU-T

recommendations V.92 and V.44 communication

industry standards. V.92 and V.44 have four innova-

tive features, designed to improve modem perfor-

mance in the internet environment. The new features

are as follows:

The DSP1648C has an integrated PCI interface,

which eliminates the 16550 UART bottleneck found

in traditional hardware modems. The PCI interface

supports both slave and master operations while pro-

viding greater access to host PC system resources.

Host-based controller modems have the benefit of

using powerful CPUs and accessing their plentiful

RAM and disk space. Modem firmware can therefore

be updated in the field since the code simply resides

on the disk.

With this feature set, designers can create full-fea-

tured modem solutions which are characterized by

low-cost, low power consumption, and high-perfor-

mance.

* Due to FCC limitations, speeds of 53 kbits/s are the maximum

† Modem on hold functionality requires call waiting services.

permissible transmit power levels during download transmis-

sion. Actual data speeds will vary depending on the line

conditions.

Modem fast connect: faster start-up times.

Modem on hold

incoming phone call without losing the data

connection.

PCM upstream: send data to central site at rates

approaching 48 kbits/s.

Data compression enhancement focused on

todays internet traffic.

†

: switch between modem and an

September 2001

Product Brief

Related parts for DSP1648C

DSP1648C Summary of contents

Page 1

... PCM upstream: send data to central site at rates approaching 48 kbits/s. Data compression enhancement focused on todays internet traffic. The DSP1648C has an integrated PCI interface, which eliminates the 16550 UART bottleneck found in traditional hardware modems. The PCI interface supports both slave and master operations while pro- viding greater access to host PC system resources ...

Page 2

... DSP1648C HOST-BASED CONTROLLER MODEM CHIP ROM CODED DSP1648C HOST PROCESSOR PCI Figure 1. Agere Systems DSP1648C and Transformer-Based DAA Block Diagram 2 2 Video-Ready Interface The video-ready interface supplied by the DSP1648C chip set provides video conferencing capability using traditional POTS lines. The implementation of the ITU-T V ...

Page 3

... DSP1648C HOST PROCESSOR PCI 100-PIN TQFP Figure 2. Agere Systems DSP1648C Host-Based Controller Modem Chip Set Block Diagram 3 3 Integrated PCI Interface The DSP1648C features a ROM-coded DSP1600 core combined with the control and communications logic required to implement a modem data pump. The DSP1648 incorporates a PCI interface which supports two full-duplex bus master streams for greater access to host system resources ...

Page 4

... Agere Systems DSP1648C Host-Based Controller V.92 Modem Chip Set Package Information DSP1648C 100-PIN TQFP DSP1648C Figure 3. DSP1648C Chip Set Package Options Ordering Information Device Description DSP1648C Modem Chip CSP1034C Modem Codec CSP1035A Silicon DAA CSP1027 Audio Codec MNP is a trademark of Microcom, Inc. ...

Related keywords

DSP1648C datasheet
DSP1648C data sheet
DSP1648C pdf datasheet
DSP1648C component
DSP1648C part
DSP1648C distributor
DSP1648C RoHS
DSP1648C datasheet download