Product Brief
SFAX34/SFAX17
Soft FAX Modem for Embedded Products
F e at u r e s
n
SFAX34 and SFAX17 devices for V.34 and V.17
FAX solutions
24-pin MLCC production package
– 48-pin TQFP for backward compatibility to
DP3/CFAX
SFAX is a family of chips that are designed to support soft embedded FAX
applications for MFP and FAX machine. The family includes two devices:
n
n
SFAX34: Soft embedded V.34 FAX chipset
SFAX17: Soft embedded V.17 FAX chipset
n
n
DTE interface:
– Serial Peripheral Interface (SPI)
The SFAX devices support a SPI interface which provides the interface between the embedded
processor and the modem chip set. It provides interfaces to the CSP1040 Codec, the T38 voice
codec for handset and speakerphone applications and the call progress speaker circuit.
The chipset would be used in conjunction with Soft Modem code running on the System’s
embedded processor to implement the complete FAX function including modulation speeds up to
V.34 and the T.30 protocol stack.
n
Single 3.3V supply with 5V tolerant I/O
Supports all CSP1040 features and allows a
single world-wide hardware design
LSI Soft FAX modem supports:
– V.34 and lower Fax rates
– T.32 Command Set (T.30 w/ECM)
– World-wide caller ID
– Handset, speakerphone and TAM (with T38
audio codec)
– Supports proprietary OS’s with RTOS-
independent architecture
n
n
LSI
SFAX34
-M24
LSI
SFAX34
-M24
Actual Size
SFAX/CSP1040 System Overview
The LSI SFAX34/17 chip set is a two-chip solution consisting of an LSI SFAX34/17 modem controller and a CSP1040 DAA. The SFAX34/17 devices support
FAX modes with rates up to 33.6 Kpbs. The SFAX device is available in a 24-pin MLCC suitable for most applications. A 48-pin TQFP is also available for pin
compatibility to the CFAX and DP3 chipsets. Figure 1 shows a typical application using a SFAX34 modem controller along with CSP1040 silicon DAA to
add FAX capability to a system.
Soft FAX Modem Stack running on SoC
SPI
LSI
SFAX34
-M24
LSI
T38
LSI
CSP1040
To
Phone Line
Figure 1. SFAX System Block Diagram
Device
SFAX17
Part Number
L-SFAX17-M24-D
L-SFAX17-M24-DT
L-SFAX17L-M24-D
L-SFAX17L-M24-DT
DescriPtioN
Soft V.17 Interface (Tubes)
Soft V.17 Interface (Tape and Reel)
Soft V.17 Interface w/o voice (Tubes)
Soft V.17 Interface w/o voice (Tape and Reel)
Soft V.34 Interface (Tubes)
Soft V.34Interface (Tape and Reel)
Soft V.34 Interface w/o voice (Tubes)
Soft V.34 Interface w/o voice (Tape and Reel)
DAA Codec (Tubes)
DAA Codec (Tape and Reel)
Pack age
24-pin MLCC
24-pin MLCC
24-pin MLCC
24-pin MLCC
24-pin MLCC
24-pin MLCC
24-pin MLCC
24-pin MLCC
20-pin ETSSOP
20-pin ETSSOP
comcoDe
7110201710
7110202930
7110208540
7110208550
7110201730
7110203030
7110209210
7110209220
7110170960
7110170970
SFAX34
L-SFAX34-M24-D
L-SFAX34-M24-DT
L-SFAX34L-M24-D
L-SFAX34L-M24-DT
CSP1040E DAA Codec
L-CSP1040E3-E11-D
L-CSP1040E3-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
responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing
by LSI; nor does the purchase, lease, or use of a product or service from LSI convey a license under any patent rights, copyrights, trademark
rights, or any other of the intellectual property rights of LSI or of third parties.
Copyright ©2008 by LSI Corporation. All rights reserved.
December 2008
PB05-052NP
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