PM5313 datasheet(90/646 Pages) PMC

90 / 646 page

PRODUCTION

PMC-Sierra, Inc.

PM5313 SPECTRA-622

DATASHEET

PMC-1981162

ISSUE 6

SONET/SDH PAYLOAD EXTRACTOR/ALIGNER FOR 622 MBIT/S

PROPRIETARY AND CONFIDENTIAL

Pin Name

Type

No.

Function

RPOHFP

Output

D15

The receive path overhead frame position signal

(RPOHFP) may be used to locate the individual

path overhead bits of an STS-1 (STM-0/AU3),

STS-3c (STM-1/AU4) or STS-12c (STM-4-4c) in

the path overhead data stream on RPOH.

RPOHFP signal is logic 1 when bit 1 (the most

significant bit) of the path trace byte (J1) of the first

STS-1 (STM-0/AU3), STS-3c (STM-1/AU4) or

STS-12c (STM-4-4c) is present in the RPOH

stream.

RPOHFP may be used to locate the BIP error

count and path RDI indication bits on the receive

alarm port data signal (RAD). RPOHFP is logic 1

when the first of eight BIP error positions from the

first STS-1 (STM-0/AU3), STS-3c (STM-1/AU4) or

STS-12c (STM-4-4c) stream is present on the

receive alarm data signal (RAD).

RPOHFP signal is updated on the falling edge of

the RPOHCLK signal.

RPOH

Output

B15

The receive path overhead data signal (RPOH)

contains the path overhead bytes (J1, B3, C2, G1,

F2, H4, Z3, Z4, and Z5) extracted from the path

overhead of the twelve STS-1 (STM-0/AU3)

streams or the four STS-3/3c (STM-1/AU3/AU4)

streams or the single STS-12c (STM-4-4c) stream.

The corresponding RPOHEN signal is set high to

identify the valid overhead bytes that are

presented.

RPOH is updated on the falling edge of

RPOHCLK.

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