Embedded Dial-Up Modems
Controller-Based Modems
CX84100 Modem Features
Modulations
- ITU-T V.22bis (2400 bps)
- V.22 and Bell 212A (1200 bps)
- V.22 fast connect
- V.21 and Bell 103 (300 bps)
- V.23 1200/75 and 75/1200
- V.23 Half Duplex (1200 bps)
V.42 and MNP2-4 Error Correction
Serial Interface
Synchronous/Asynchronous Data Mode
- Hardware and software flow control
Supports AT Command Set
Other Protocols
- V.80 Synchronous Access Mode
- V.23 Reverse Mode
Type I and Type II Caller ID Decoding
Worldwide DC Mask Compliance
Enhanced DAA features
- Digital Line Protection
- Line-in-Use Detection
- Extension Pickup Detection
- Remote Hangup Detection
Single +3.3V supply
SCXV.22bis 28-pin TSSOP
SmartDAA
3 28-pin QFN
2400 bps Modem with SmartDAA
3
for Embedded Applications
Conexant's broadband communications portfolio includes a comprehensive
suite of semiconductor solutions that enable the digital home and information
network. Conexant modem solutions deliver a high level of integration and
robust performance. The SCXV.22bis modem device is a simplified design
in a small form-factor, that allows for quick time-to-market. The SCXV.22bis
modem supports worldwide DAA and data modes up to 2400bps.
Conexant's proprietary SmartDAA
3 line side device eliminates the need
for costly analog transformers, relays and opto-isolators typically used in
discrete DAA implementation for country-specific modem configurations.
The result is a worldwide reduced system cost solution using a single bill
of materials (BOM). The SmartDAA 3 is system-powered, meaning the
DAA operates reliably without drawing power from the line. The advantage
of system-powered DAA over line-powered DAA is the enhanced performance
when line current is insufficient.
This low cost solution integrates microcontroller (MCU), serial host interface,
ROM, RAM and SmartDAA system side device (SSD) functions onto a single
die. The easy-to-use design is pin-to-pin compatible with the following
high-speed solutions: Conexant SmartV.92/SmartV.34/SmartV.32bis Modem
in a 28-pin CTLGA package.
Applications
The Conexant SCXV.22bis Modem is ideal for embedded applications
such as:
POS Terminals
Set-top Boxes
Email Terminals
ATM Machines
Part Number CX84100
Description SCXV.22bis Modem
SCXV.22bis Modem
CX84100
2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NON-INFRINGEMENT.
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
02-0631
Embedded Dial-Up Modems
Controller-Based Modems
www.conexant.com
General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Order# 102104B
SCXV.22bis Modem Block Diagram
Ordering Information
Marketing Name
Modem
SmartDAA
Ordering Number
SCXV.22bis
CX84100-xx
CX20493-21
DS22-L100-1xx
Evaluation Board
RD01-D680-0xx
Data Sheet and Design Guide
Doc # 101979
AT Command Manual
Doc # 102000
Serial
Interface
Serial
Interface
MCU/
SmartDAA
Interface
Digital
Isolation
Barrier (DIB)
Components
Telephone
Line
Telephone
Line
Interface
Codec
Line Side
DIB
Interface
(LSDI)
Tip
Ring
CX84100
V.22bis Modem
28-Pin TSSOP
CX20493
SmartDAA 3
Line Side Device (LSD)
28-Pin QFN
DAA Hardware
28.224 MHz
RAM
ROM
Advantages
Pin-compatible to Smart V.92/V.34/
V.32bis in CTLGA package
SmartDAA
3 technology
Worldwide support
Quick time-to-market
Low-cost solution
Small form-factor
CX20493
Actual Modem Area 64mm x 30mm
CX84100
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