Product Brief
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
The SDFE-4/2/1 are the latest members of Infineon’s 2
nd
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.
Loop Interface
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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
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Applications
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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
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4/2/1 integrated HDLC controllers for EOC
handling (one per channel)
128-byte FIFO for transmit and receive
direction per channel
Customer Interface
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Universal TDM interface
Bit-serial interface
Modes
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Features
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Line termination unit LTU (STU-C)
Network termination unit NTU (STU-R)
Regenerator unit COT/RT (SRU-C/R)
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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
Physical Characteristics
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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
w w w. i n f i n e o n . c o m / p r o d u c ts
Wireline Communications
N e v e r
s t o p
t h i n k i n g .
Product Brief
SDFE 4/2/1 PHY Block Diagram
Serial
Host
I/F
LD
µC
DSP
AFE
Hybrid
TDM
TDM
Framer
M-Pair
Unit
LD
DSP
AFE
Hybrid
LD
DSP
AFE
Hybrid
LD
DSP
AFE
Hybrid
Ordering Information
SDFE-4/2/1
Product Sales Code
PEF24624E
PEF22624E
PEF21624E
Product
SDFE-4
SDFE-2
SDFE-1
Description
4-Channel Symmetric DSL Front End
2-Channel Symmetric DSL Front End
1-Channel Symmetric DSL Front End
Package
P-LBGA-324
P-LBGA-324
P-LBGA-324
4x
E1/T1/J1
QuadFALC
(PEF 22554)
PCM
SDFE-4
(PEF 24624)
4x
SHDSL
E1/T1 Replacement
Application Example
Board
Controller
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.
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.
Template: pb_tmplt.fm/4
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.
Ordering No. B115-H8424-X-X-7600
Printed in Germany
PS 06041.
nb
Published by Infineon Technologies AG