PM5313 datasheet(69/646 Pages) PMC

69 / 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

LRDI/

Output

A18

The line remote defect indication (LRDI) signal is

active when the ring control port is disabled. LRDI

is set high when line RDI is detected in the

incoming stream. LRDI is declared when the 110

binary pattern is detected in bits 6, 7, and 8 of the

K2 byte for three or five consecutive frames. LRDI

is removed when any pattern other than 110 is

detected in bits 6, 7, and 8 of the K2 byte for three

or five consecutive frames. The selection of 3 or 5

consecutive frames is controlled by the LRDIDET

bit in the RLOP Control and Status register.

LRDI is updated on the rising edge of RCLK.

RRCPCLK

The receive ring control port clock (RRCPCLK)

signal provides timing for the receive ring control

port when the ring control port is enabled.

RRCPCLK is nominally a 3.24 MHz, 50% duty cycle

clock and can be connected directly to the

TRCPCLK input of a mate SPECTRA-622 in ring-

based add-drop multiplexer applications.

RRCPFP and RRCPDAT are 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) 69 Page - PMC-Sierra, Inc