PM5313 datasheet(59/646 Pages) PMC

59 / 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

FPIN

Input

AH7

The active-high framing position input (FPIN) signal

indicates the SONET/SDH frame position on the

PIN[7:0] bus when the device is configured for the

parallel interface mode of operation. The operation

of the FPIN input is controlled by the PFPEN bit in

the CRSI Configuration and Interrupt register.

When PFPEN is set to logic one, FPIN is set high to

mark the first synchronous payload envelope byte

position after the J0/Z0 bytes on PIN[7:0].

FPIN may also mark the third A2 byte as controlled

by FPPOS in SPECTRA-622 Line Configuration #2

When PFPEN is set to logic zero, FPIN is ignored

and the SPECTRA-622 will frame to the incoming

data on PIN[7:0]. The SPECTRA-622 will frame to

the incoming data on PIN[7:0] regardless of the

byte alignment or frame alignment of the incoming

stream.

FPIN is sampled on the rising edge of PICLK.

OOF

Output

AH8

The out of frame (OOF) signal is high while the

SPECTRA-622 is out of frame. OOF is set low

while the SPECTRA-622 is in-frame. An out of

frame declaration occurs when four consecutive

errored framing patterns (A1 and A2 bytes) have

been received. OOF can be used to enable an

upstream framing pattern detector to search for the

framing pattern.

OOF is updated on the rising edge of RCLK.

PM5313 Datasheet(PDF) 59 Page - PMC-Sierra, Inc

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