PM4332 데이터 시트보기 (PDF) - PMC-Sierra

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PM4332

HIGH DENSITY 32 CHANNEL T1/E1/J1 FRAMER

PMC-Sierra 

PRELIMINARY

DATA SHEET

PMC-2011402

ISSUE 1

PM4332 TE-32

HIGH DENSITY 32 CHANNEL T1/E1/J1 FRAMER

• Frames to TTC JT-G.704 multiframe formatted J1 signals. Supports the

alternate CRC-6 calculation for Japanese applications.

• Provides Red, Yellow, and AIS alarm integration.

• Supports RAI-CI and AIS-CI alarm detection and generation.

• Provides ESF bit-oriented code detection and an HDLC/LAPD interface for

terminating the ESF facility data link.

• Provides Inband Loopback Code generation and detection.

• Indicates signaling state change, and two superframes of signaling debounce

on a per-DS0 basis.

• Provides an HDLC interface with 128 bytes of buffering for terminating the

facility data link.

• Provides performance monitoring counters sufficiently large as to allow

performance monitor counter polling at a minimum rate of once per second.

Optionally, updates the performance monitoring counters and interrupts the

microprocessor once per second, timed to the receive line.

• Provides an optional elastic store, which may be used to time the ingress

streams to a common clock and frame alignment in support of a H-MVIP

interface.

• Provides DS-1 robbed bit signaling extraction and insertion, with optional data

inversion, programmable idle code substitution, digital milliwatt code

substitution, bit fixing, and two superframes of signaling debounce on a per-

channel basis.

• A pseudo-random sequence user selectable from 27 –1, 211 –1, 215 –1 or 220 –

1, may be detected in the T1 stream in either the ingress or egress directions.

The detector counts pattern errors using a 16-bit non-saturating PRBS error

counter. The pseudo-random sequence can be the entire T1 or any

combination of DS0s within a framed T1.

• Frames in the presence of and detects the “Japanese Yellow” alarm.

• Supports the alternate CRC-6 calculation for Japanese applications.

• Provides external access for up to three de-jittered recovered T1 clocks.

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

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