PM5313 datasheet(68/646 Pages) PMC

68 / 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

LOF

Output

D18

The loss of frame (LOF) signal is set high when an

out of frame state persists for 3 ms. LOF is set low

when an in frame state persists for 3 ms.

LOF is updated on the rising edge of RCLK.

LOS/

Output

B18

Loss of signal (LOS) is active when the ring control

port is disabled. Loss of signal (LOS) is set high

when a violating period (20 ± 2.5 µs) of consecutive

all zeros patterns is detected in the incoming

stream. LOS is set low when two valid framing

words (A1, A2) are detected, and during the

intervening time (125 µs), no violating period of all

zeros patterns is observed.

LOS is updated on the rising edge of RCLK.

RRCPFP

The receive ring control port frame position

(RRCPFP) signal identifies bit positions in the

receive ring control port data (RRCPDAT) when the

ring control port is enabled. RRCPFP is set high

during the filtered K1 and K2 bit positions, the

change of APS value bit position, the protection

switch byte failure bit position, and the send line

AIS and send line RDI bit positions in the

RRCPDAT stream. RRCPFP can be connected

directly to the TRCPFP input of a mate

SPECTRA-622 in ring-based add-drop multiplexer

applications.

RRCPFP is updated on the falling edge of

RRCPCLK.

The enabling and disabling of the ring control port is

controlled by the RCPEN bit in the SPECTRA-622

Ring Control register.

PM5313 Datasheet(PDF) 68 Page - PMC-Sierra, Inc

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