Product Brief
CV22A
V.22bis Modem Chipset for Low-Speed Data Applications
Video Server, and VTR Applications
F e at u r e s
n
Two-chip controller-based modem
solution:
– CV22A modem device in a 24-pin
ETSSOP or 48-pin TQFP.
– CSP1040 data access arrangement
(DAA) in a 20-pin ETSSOP.
Data-mode capabilities:
– ITU-T V.29 fast connect: 9600 bits/s,
7200 bits/s for point of sale (POS).
– ITU-T V.22 fast connect: 2400 bits/s.
(for POS)
– ITU-T V.22bis: 2400 bits/s.
– ITU-T V.23: 1200/75 bits/s.
– ITU-T V.21: 350 bits/s.
– Bell 212A: 1200 bits/s.
– Bell 103: 300 bits/s.
– MNP™ 2-4 error correction.
– SDLC/HDLC for POS applications.
RS232 asynchronous serial data
terminal equipment (DTE).
interface with rates to 230.4K bits/s.
CSP1040 features:
– System powered.
The CV22A Modem Chipset is
designed to serve embedded
applications that require lower-
speed dial-up data connections.
These applications include: digital
tv, set-top boxes, point of sale (POS),
alarm systems, remote monitoring,
and other telemetry applications.
The CV22A chip set includes the LSI CV22A
modem device and LSI CSP1040 silicon data
access arrangement (DAA), thereby providing
a complete V.22bis controller-based modem.
The CV22A device incorporates an ARM7
microcontroller for AT command processing,
modem protocols, and data modulation tasks.
It provides an RS232 serial host (system side)
interface as well as an interface to the CSP1040
(DAA side).
The CSP1040 device is LSI’s third-generation
silicon DAA. It reduces the number of
components and board area required to
implement a full-featured modem while
achieving compliance with worldwide
regulatory requirements. A low-profile digital
transformer provides the communications link
between the CSP1040 and CV22A devices. This
digital link also provides power to the CSP1040,
allowing full operation on even marginal phone
lines. The CSP1040 includes hardware support
for detecting line-in-use status, overcurrent,
polarity reversals, caller ID, and ringing without
additional external circuitry. This allows for
full-featured modem designs without increased
bill-of-material (BOM) or board space.
n
n
n
LSI
CV22-T48
CV22A-
E24
– Type I caller-ID support.
– Remote handset detection.
– Line-in-use detection.
– Digital transformer-based isolation
barrier.
LSI
CV22A-T48
CV22A-
E24
Actual Size
Embedded Host Processor
RS232
LSI
CV22A
LSI
CSP1040
To
LINE
Device
CV22A
Part Number
L-CV22AV1-E24B-DT
L-CV22AV1-E24B-D
DescriPtioN
V.22bis Modem – Dry Pack Tape and Reel
V.22bis Modem – Dry Pack Tube
DAA Version 3
DAA Version 3
Pack age
24-pin ETSSOP
24-pin ETSSOP
20-pin ETSSOP
20-pin ETSSOP
comcoDe
7110218650
7110218630
7110072260
7110072670
CSP1040
L-CSP1040A3-E11-D
L-CSP1040A3-E11-DT
For more information and sales office locations, please visit the LSI web sites at:
lsi.com lsi.com/contacts
LSI and the LSI logo are trademarks or registered trademarks of LSI Corporation or its subsidiaries. All other brand and product names may be
trademarks of their respective companies.
LSI Corporation reserves the right to make changes to any products and services herein at any time without notice. LSI does not assume any re-
sponsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by
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Copyright ©2008 by LSI Corporation. All rights reserved.
November 2008
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