PM5342 datasheet(89/558 Pages) PMC

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PM5342 SPECTRA-155

DATA SHEET

PMC-970133

ISSUE 4

SONET/SDH PAYLOAD EXTRACTOR/ALIGNER

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

Pin Name

Type

No.

Function

SS[30]/

GC1J1V1

Output D8

The GENERATED bus composite timing signal

(GC1J1V1) identifies the frame, payload and

tributary multiframe boundaries on the

GENERATED data bus GD[1:0]. GC1J1V1

pulses high with the GENERATED bus payload

active signal (GPL) set low to mark the first

STS-1 (STM-0/AU3) Identification byte or

equivalently the STM identification byte (C1).

GC1J1V1 pulses high with GPL set high to

mark the path trace byte (J1). The GC1J1V1

signal pulses high on the V1 byte to indicate

tributary multiframe boundaries. Since the

GENERATED bus is expected to have fixed

timing relationship with the ADD bus, access

modules may use GC1J1V1 to located the

frame, payload and tributary multiframe

boundaries on the ADD bus. GC1J1V1 is

updated on the rising edge of ACK.

SS[31]/GDP

Output C7

The GENERATED bus data parity signal (GDP)

indicates the parity of the GENERATED bus

signals. The GENERATED data bus (GD[1:0])

is always included in parity calculations. The

internal register bits control the inclusion of the

GPL and GC1J1V1 signals in parity calculation

and the sense (odd/even) of the parity. GDP is

updated on the rising edge of ACK.

PM5342 Datasheet(PDF) 89 Page - PMC-Sierra, Inc