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TXC-03456 - L4M Device Level 4 Mapper

Datasheet Summary

Description

The L4M device maps a 139.264 Mbit/s asynchronous line signal into an AU-4 VC-4/STS-3c SPE signal.

The SDH/SONET signal is transmitted via the add bus with timing derived from the drop bus, add bus, or external clock source.

Features

  • h S a at . D w w w L4M Device Level 4 Mapper TXC-03456 DATA SHEET.

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Datasheet preview – TXC-03456

Datasheet Details

Part number TXC-03456
Manufacturer Transwitch
File Size 1.24 MB
Description L4M Device Level 4 Mapper
Datasheet download datasheet TXC-03456 Datasheet
Additional preview pages of the TXC-03456 datasheet.

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Full PDF Text Transcription

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m o .c U 4 t e e FEATURES h S a at .D w w w L4M Device Level 4 Mapper TXC-03456 DATA SHEET DESCRIPTION The L4M device maps a 139.264 Mbit/s asynchronous line signal into an AU-4 VC-4/STS-3c SPE signal. The SDH/SONET signal is transmitted via the add bus with timing derived from the drop bus, add bus, or external clock source. The L4M can compensate for up to a frame offset when using external timing and an external C1 pulse. An option is provided to generate TOH bytes, such as the A1 and A2 framing bytes, a C1 byte, and the H1 and H2 pointer bytes only in drop bus and external timing modes. The VC-4/SPE can be fixed to a known J1 reference when add bus timing is selected, or it can be positioned with a pointer value of 0 or 522 when drop bus or external timing is selected.
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