PM7344 datasheet(19/293 Pages) PMC

19 / 293 page

PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

• Detects violations of the ANSI T1.403 12.5% pulse density rule over a moving

192 bit window or optionally stuffs ones to maintain minimum ones density.

• Allows insertion of framed or unframed in-band loopback code sequences.

• Allows insertion of the data link in ESF mode.

• Supports transmission of the alarm indication signal (AIS) or the yellow alarm

signal in all formats.

• Provides ESF bit-oriented code generation and an HDLC interface for

generating the ESF data link.

• Supports polled, interrupt-driven, or DMA servicing of the HDLC interface.

• Supports B8ZS or AMI line code.

• Provides dual rail or single rail digital PCM output signals.

The E1 receiver section:

• Recovers clock and data using a digital phase locked loop for high jitter

tolerance. A direct clock input is provided to allow clock recovery to be

bypassed.

• Accepts dual rail or single rail digital PCM inputs.

• Supports HDB3 or AMI line code.

• Accepts gapped data streams to support higher rate demultiplexing.

• Frames to a G.704 2048 kbit/s signal within 1 ms.

• Frames to the CRC multiframe alignment when enabled.

• Frames to the signalling multiframe alignment when enabled.

• Provides loss of signal detection, and indicates loss of frame alignment

(OOF), loss of signalling multiframe alignment and loss of CRC multiframe

alignment.

• Supports line and path performance monitoring according to ITU-T

recommendations. Accumulators are provided for counting:

• CRC-4 errors to 1000 per second;

PM7344 датащи(PDF) 19 Page - PMC-Sierra, Inc