IWE8
PRODUCT BRIEF
Never stop thinking.
IWE8
PXB 4220/4221
Features
■Full duplex ATM Packetizer/
Depacketizer for 8 E1/T1
highways
■Configurable to T1 or E1 mode
via external pin
■8T1/E1portsconfigurableinde-
pendently to ATM or AAL Mode
■ATM Mode:
- ATM cell mapping into PDH
according to ITU-T G.804
- B-ISDN User-Network
Interface
- Physical Layer Opera-
tion at 1544 kbit/s and
2048 kbit/s according to
ITU-T I.432.3
■AAL Mode (PXB 4220/4221):
- AAL1 according to
ITU-T I.363.1 or transparent
without any adaptation layer
overhead (AAL0)
- Structured T1/E1 N x 64 kbit/s
service
- Channel Associated Signalling
(CAS)
- Partially filled cells with pro-
grammable filling thresholds
- Reassembly buffer can com-
pensateupto+/-4msCell
Delay Variation (CDV)
- Statistics counters per chan-
nel for lost/misinserted/errored
cells etc.
- Internal clock recovery circuit
using Synchronous Residual
Time Stamp (SRTS) or Adap-
tive Clock Method (ACM) for
unstructured CES ports.
Optionally, it's possible to
order the PXB 4221 device,
which comes without SRTS
clock recovery.
■Inverse Multiplexing over ATM
(IMA) interface
■8 generic framer interfaces with
integrated transmit clock selec-
tor supporting
- Synchronous Mode (SYM)
- Generic Interface Mode (GIM)
- FALC Mode (FAM): Glue-less
interface for Infineon's Framer
and Line Interface Compo-
nents (FALC)
- Echo Canceller Mode (EC):
ATM cells are duplicated
internally and transmitted via
two framer ports
■UTOPIA industry standard
interface:
- Level 2 in slave mode; 8 data,
5 address lines
- Level 1 in master/slave mode
- UTOPIAclockupto38.88MHz
The "Interworking Element for 8 E1/T1 lines"
(IWE8), PXB 4220 and PXB 4221 are members of
Infineon" ATM Chipset. Together with framing and
line interface components (e.g. Infineon's
QuadFALC PEB 22554) the IWE8 serves as gate-
way between Asynchronous Transfer Mode (ATM)
networks and timeslot based PDH networks.
The IWE8 is a single chip multiservice device that
integrates ATM cell handling and TDM circuit to
ATM cell interworking in E1/T1 applications. Each
of the 8 E1 or T1 input and output ports can be
configured independently to operate in ATM Mode
or AAL Mode. It is a very flexible solution support-
ing multiple services with a minimum of devices.
PRODUCT BRIEF
How to reach us:
http://www.infineon.com
Published by
Infineon Technologies AG,
Bereich Kommunikation,
St.-Martin-Strasse 53,
D-81541 München
© Infineon Technologies AG 2000. All Rights Reserved.
Attention please!
Theinformationhereinisgiventodescribecertaincomponents
and shall not be considered as warranted 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.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and
conditions and prices please contact your nearest
Infineon Technologies Office in Germany or our Infineon
Technologies Representatives worldwide.
Warnings
Dueto technicalrequirements componentsmay containdan-
gerous substances. For information on the types in question
please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-
supportdevicesorsystemswith theexpresswrittenapproval
ofInfineon Technologies,ifa failureofsuch componentscan
reasonably be expected to cause the failure of that life-sup-
port device or system, or to affect the safety or effectiveness
ofthat device orsystem. Life supportdevices or systemsare
intended to be implanted in the human body, or to support
and/ormaintain andsustain and/or protecthuman life.If they
fail, it is reasonable to assume that the health of the user or
other persons may be endangered.
Published by Infineon Technologies AG
■16-Bit generic microprocessor
interface for control and configu-
ration of the chip runs either in
Intel 386EX or Motorola compat-
ible mode
■External synchronous Flow-
Through SSRAM 1 x 64 K x
33Bitor1x64Kx32Bitrequired
■Build-in data path loops for test
■Cell insertion/extraction via
microprocessor interface
■3.3 V power supply with 5 V
tolerant inputs
■Typical power dissipation 1 W
■P-BGA 256 package
■Temperature range from
-40° to +85°C
QuadFALC
PEB 22554
T1/E1
QuadFALC
PEB 22554
T1/E1
IWE8
PXB 4220
PXB 4221
UTOPIA ATM Layer
Device
(e.g. ABM,
IMA FPGA,...)
UTOPIA
SSRAM
Microcontroller
PXB 4220/PXB 4221
Networking Element for
8 T1/E1 Ports (IWE8)
Processor
Interface JTAG
IMA
Interface
UTOPIA
Interface
ATM Mode
(G.804)
AAL1 Mode
RAM IFICRC
S / P
P / S
T1/E1
PXB 4220/PXB 4221
Application Example:
Line Interface Card
Ordering No. B119-H7648-X-X-7600
PrintedinGermany
PS 04005. NB
