pxb4219 Infineon Technologies Corporation, pxb4219 Datasheet - Page 18

• Manufacturer Part Number: pxb4219
• Description: Iwe8 Interworking Element For 8 E1/t1 Lines
• Manufacturer: Infineon Technologies Corporation

Interworking Element for 8 E1/T1 Lines
IWE8
Version 3.3
1.1
• Full duplex ATM Packetizer/Depacketizer for 8 E1/T1
• Configurable to T1 or E1 mode via external pin
• 8 T1/E1 ports configurable independently to ATM or
• ATM Mode (PXB 4219/4220/4221):
• AAL Mode (PXB 4220/4221):
Type
PXB4219 / PXB4220 / PXB4221
Data Sheet
highways
AAL Mode
– ATM cell mapping into PDH according to ITU-
– B-ISDN User-Network interface - Physical Layer
– B-ISDN User-Network interface - Physical Layer oparation at 1544 KBit/s and 2048
– AAL1 according to ITU-T I.363.1 [31] or transparent without any adaptation layer
– T1/E1 unstructured service according to ATM Forum af-vtoa-0078.000 [10] section
– Structured T1/E1 N x 64 Kbit/s service according to [10] section 2 with M channels
– Channel Associated Signalling (CAS) support according to [10]
– Echo Canceller Mode
– Partially filled cells with programmable filling thresholds
– Selectable Sequence Count Algorithm:
– AAL0 option: 48 Bytes user payload per ATM Cell, without AAL overhead
– Reassembly buffer can compensate up to +/- 4 ms Cell Delay Variation (CDV)
– Statistics counters per channel for lost/misinserted/errored cells etc.
T G.804 [26]
according to ITU-T I.432 [32]
KBit/s according to ITU-T I.432.3 [34]
overhead (AAL0)
3
of N x 64 Kbit/s (M,N = 1to 24 for T1) (M,N = 1to 32 for E1)
– Robust/Fast according to ITU-T I.363.1 [30]
– According to ETSI (prl-ETS 300353 annex D) [17]
– Fast: Saves 6 ms during reassembly for 1 x 64 Kbit/s connection
Features
18
Package
P-BGA-256
PXB4219 /
PXB4220 /
PXB4221
2002-05-06