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TXC04222

Transwitch
Part Number TXC04222
Manufacturer Transwitch
Description 28-Channel Dual Bus High Density Mapper
Published Dec 1, 2005
Detailed Description TEMx28 Device 28 Channel Dual Bus High Density Mapper TXC-04222 DATA SHEET FEATURES • Add/drop up to 28 E1, DS1, or VT/...
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TXC04222
TXC04222

Overview
TEMx28 Device 28 Channel Dual Bus High Density Mapper TXC-04222 DATA SHEET FEATURES • Add/drop up to 28 E1, DS1, or VT/TU payloads from two add and two drop STM-1/VC4, STS-3 buses • Add bus and drop bus timing modes • Cross mapping applications (DS1 mapped to/from VT2/TU-12s) • Selectable HDB3/B8ZS/AMI positive/negative rail, NRZ, or VT/TU interfaces per channel • H4 multiframe option in place of Telecom Bus V1 pulse • Digital desynchronizer • Drop buses are monitored for parity, loss of clock, and upstream AIS • Performance counters for pointer movements, BIP-2 errors, REI and coding violations • Single-bit or three-bit RDI operation per channel • Tandem connection capability per ETSI standards • J2 trail trace comparison option • Processor access to H1/H2, H4 overhead bytes, and V1/V2 and V4 bytes • Selectable positive, negative or positive/negative alarm transition interrupt options • Line and facility loopbacks, generation of BIP-2 and REI errors, PRBS generator and analyzer per channel • Polling registers and global summary alarm status • One second measurements: counters and alarms • Software device driver is provided • IEEE 1149.
1 standard boundary scan • +3.
3 V and 1.
8 V power supplies, 5 V tolerant I/O leads • 376-lead plastic ball grid array (PBGA) package (23 mm x 23 mm) DESCRIPTION The TEMx28 device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications.
Up to 28 E1, DS1, or VT/TU payloads are mapped to and from VT1.
5/TU-11s and VT2/TU-12s carried in an STM-1 VC-4 or STS-3 format.
The device interfaces to a multiple-segment, byte-parallel SDH/SONET-formatted bus at the 19.
44 Mbyte/s byte rate.
The E1 and DS1 signals can be HDB3 or B8ZS/AMI rail signals, or NRZ signals.
The VT/TU interface can be provided with or without the overhead bytes for virtual concatenation applications.
The TEMx28 performs pointer tracking and overhead byte processing, including single-bit or three-bit RDI operation, an...


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