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PM4344 - Quad T1 Framer

Features

  • Monolithic single-chip device that integrates four full-featured T1 framers and transmitters for terminating duplex DS1 signals.
  • Supports SF, ESF, T1DM (DDS), and SLC®96 format DS1 signals.
  • Supports unframed mode. Supports B8ZS or AMI line codes.
  • Supports transfer of PCM and signalling data to/from 1.544 Mbit/s, 2.048 Mbit/s, 12.352 Mbit/s, or 16.384 Mbit/s backplane buses.
  • Supports n x DS0 backplane interface for fractional T1.
  • Provide.

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Datasheet preview – PM4344

Datasheet Details

Part number PM4344
Manufacturer PMC
File Size 80.56 KB
Description Quad T1 Framer
Datasheet download datasheet PM4344 Datasheet
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Full PDF Text Transcription

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PMC-Sierra,Inc. PM4344 TQUAD ANSI specifications. Accumulators are provided for counting, ESF CRC-6 errors, Framing bit errors, Line Code Violations (LCVs), and Loss Of Frame (LOF) or change of frame alignment events. • Extracts the data link in ESF, T1DM (DDS), or SLC®96 modes. Extracts selected channels. • Provides a 2-frame elastic store buffer for jitter and wander attenuation. • Allows insertion of selected channels through a serial port. • Supports transmission of the AIS or the yellow alarm signal in all formats. • Provides a digital PLL for generation of a low jitter transmit clock. • Provides a FIFO buffer for jitter attenuation and transmit rate conversion. FIFO full or empty indication allows for bit-stuffing in higher rate multiplexing applications.
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