Never stop thinking.
Product Brief
The SDFE-4/2/1 are the latest members of Infineon’s 2nd generation
SOCRATES® family of SHDSL transceivers designed for pure TDM
applications.
The SDFE-4/2/1 features full compliance with the ETSI TS 101524
and the ITU G.991.2 (G.SHDSL/G.SHDSL.bis) standards. Advanced
system functionality and cost saving features continue to provide
significant low BOM advantages in the SOCRATES tradition.
These features, in combination with an unprecedented power
consumption of approximately 500 mW per channel, and a very
small footprint, make the SDFE-4/2 excellent solutions for remote
powered repeater designs.
Applications
■ISDN primary rate access replacement
■SHDSL repeater/regenerator
■Digital Loop Carrier (DLC) Systems
■Extended range full and fractional E1/T1
■RITL and WLL systems
■Wireless infrastructure
■SDH and SONET termination
■TU-12 transport
■Leased line services
■PBX trunk lines
Features
■Fully integrated 4/2/1 channel transceiver solution, including DSP,
microcontroller, analog front end (AFE), line driver and memory,
in a single integrated chip
■Support of payload data rates from 144 kbit/s up to 6.392 kbit/s
with 8 kbit/s granularity (exceeding G.SHDSL.bis)
■M-pair functionality integrated
■Tunable hybrid for optimal loop adaptation and reach
■Only a few external passive components required
www.infineon.com/products
SDFE-4/2/1
Symmetric DSL Front End, 4/2/1
Channel
SDFE-4, PEF 24624 E
SDFE-2, PEF 22624 E
SDFE-1, PEF 21624 E
Wireline Communications
Loop Interface
■Line probing according ITU-T G.991.2
(2004)
■Flexible setting of PSD shaping
■Highly sophisticated TC-PAM line coding
■Programmable framer
■Supported TDM clocks: 1.544 MHz,
2.048 MHz, 2.312 MHz, 4.096 MHz,
8.192 MHz, 16.384 MHz
EOC
■4/2/1 integrated HDLC controllers for EOC
handling (one per channel)
■128-byte FIFO for transmit and receive
direction per channel
Customer Interface
■Universal TDM interface
■Bit-serial interface
Modes
■Line termination unit LTU (STU-C)
■Network termination unit NTU (STU-R)
■Regenerator unit COT/RT (SRU-C/R)
Physical Characteristics
■Only two power supplies: 3.3 V, 1.8 V
■Power consumption approximately 500 mW
per channel
■Temperature range -40°C to +85°C
■Package P-LBGA-324 (19 mm x 19 mm)
■SDFE-4/2/1 are pin and software compatible
Published by Infineon Technologies AG
Product Brief
How to reach us:
http://www.infineon.com
Published by
Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München
© Infineon Technologies AG 2004.
All Rights Reserved.
Template: pb_tmplt.fm/4
Attention please!
The information herein is given to describe certain components
and shall not be considered as a guarantee of characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not
limited to warranties of non-infringement, regarding circuits,
descriptions and charts stated herein.
Information
For further information on technology, delivery terms
and conditions and prices please contact your nearest
Infineon Technologies Office.
Warnings
Due to technical requirements components may contain danger-
ous substances. For information on the types in question please
contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-
support devices or systems with the express written approval of
Infineon Technologies, if a failure of such components can rea-
sonably be expected to cause the failure of that life-support de-
vice or system, or to affect the safety or effectiveness of that de-
vice or system. Life support devices or systems are intended to
be implanted in the human body, or to support and/or maintain
and sustain and/or protect human life. If they fail, it is reasonable
to assume that the health of the user or other persons may be
endangered.
SDFE 4/2/1 PHY Block Diagram
M-Pair
Unit
DSP AFE
LD
Hybrid
TDM
Framer
AFEDSP
Hybrid
LD
AFEDSP
LD
Hybrid
AFEDSP
LD
Hybrid
TDM
µC
Serial
Host
I/F
E1/T1 Replacement
Application Example
QuadFALC
(PEF 22554)
4 x
E1/T1/J1
SDFE-4
(PEF 24624)
PCM
4 x
SHDSL
Board
Controller
Ordering No. B115-H8424-X-X-7600
Printed in Germany
PS 06041. nb
Ordering Information
SDFE-4/2/1
Product Sales Code Product Description Package
PEF24624E SDFE-4 4-Channel Symmetric DSL Front End P-LBGA-324
PEF22624E SDFE-2 2-Channel Symmetric DSL Front End P-LBGA-324
PEF21624E SDFE-1 1-Channel Symmetric DSL Front End P-LBGA-324
