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PM4332 Datasheet(PDF) 11 Page - PMC-Sierra, Inc |
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PM4332 Datasheet(HTML) 11 Page - PMC-Sierra, Inc |
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11 / 446 page  PRELIMINARY PM4332 TE-32 DATA SHEET PMC-2011402 ISSUE 1 HIGH DENSITY 32 CHANNEL T1/E1/J1 FRAMER PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR THE INTERNAL USE OF ITS CUSTOMERS 2 • 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 2 7 –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. |
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