CX20493-31

Modem Chip Single Chip 2.4Kbps 28Pin QFN

Overview

The Conexant®SCXV.92, SCXV.34, and SCXV.32bis modems are worldwide operational modem device sets for embedded applications that support modulations up to V.92, V.34, and V.32bis, respectively refer to Table 1-1. All modems also support V.44/V.42bis/MNP 5 data compression for greater data throughput, V.42 LAPM/MNP2-4 error correction protocol for increased data integrity and reliability.

Features

•  Modulations and protocols

−  ITU-T V.92

♦  Modem-on-Hold MOH

♦  Quick connect QC

♦  PCM upstream

−  V.90/V.34/V.32bis/V.32

−  V.22bis/V.22/V.23/V.21

−  V.23 reverse, V.23 half-duplex

−  Bell 212A/Bell 103

−  V.29 FastPOS

−  V22bis fast connect

−  V.80 Synchronous Access Mode

•  Data compression

−  V.44/V.42bis/MNP5

•  Error correction

−  V.42/MNP 4/MNP 2

•  Call Waiting CW detection

•  Type I and Type II Caller ID CID decoding

•  DTE/host interface

−  Serial DTE interface

−  Parallel 16550 UART-compatible host interface 38-pin version

−  Direct Mode

−  Synchronous Mode

−  Asynchronous Mode

•  No external memory required

•  Sixty-three embedded and upgradeable country profiles

•  Serial NVRAM interface for optional permanent country profile storage 38-pin

version

•  Embedded AT commands

•  Full-duplex Voice Pass-Through Mode

−  Mu-Law, A-Law serial and parallel host interface

−  14-bit PCM parallel host interface only

•  SmartDAA

−  Extension pick-up detection

−  Digital line protection

−  Line reversal detection

−  Line-in-use detection

−  Remote hang-up detection

−  Worldwide compliance

•  Selectable 28.224 MHz or 27.000 MHz frequency of operation

•  Low power and voltage

−  Single +3.3V supply

−  Low power consumption mode

−  +3.3V I/O level

•  Compact, robust board design

−  Small, low-profile modem packages

−  SmartDAA and DIB technologies

−  Reference design supports 5KV isolation

Applications

•  Set top boxes

•  Point-of-Sale terminals

•  ATM machines

•  Metering terminals

•  Video game consoles

•  Internet appliances