Embedded Dial-Up Modems
V.22bis Applications
CX90240 Modem
28-Pin QFN
Serial
Interface
28.224 MHz
or
27.000 MHz
Crystal or Clock
Source
DAA Hardware
CX20548
SmartDAA 4
Line Side Device (LSD)
16-Pin QFN
Line Side
DIB
Interface
(LSDI)
Telephone
Line
Codec
Telephone
Line
Interface
External
Discrete
Components
Tip
Ring
DTE/Host
Inerface
RAM
ROM
MCU/DSP
SmartDAA
Interface
Digital
Isolation
Barrier (DIB)
Optional
NVRAM
CX90240 V.222bis Modem Simplified Interface
Ordering Information
Marketing Name
V.22bis Modem
Evaluation Board
Data Sheet and Design Guide
AT Command Manual
Modem
CX90240
SmartDAA®
CX20548-11Z
ordering Number
DS22-CSM-11Z
RD02-D390-5xx
Doc# 201394
Doc# 102000
Conexant Product Portfolio
The company’s broad portfolio of semiconductor products also includes client-side DSL, cable, and dial-up modem solutions; fiber optic system-on-
chips; broadcast video encoders and decoders; and digital set-top box components and systems solutions. Additional products include a complete line
of asymmetric and symmetric DSL central office solutions, which are used by service providers worldwide to deliver broadband data, voice, and video
over copper telephone lines.
© 2007 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
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General Information:
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Doc# PBR-201395
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07-2715
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