PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
• 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;
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
3
PMC [ PMC-SIERRA, INC ]
