PM7345 datasheet(34/306 Pages) PMC

34 / 306 page

PM7345 S/UNI-PDH

DATA SHEET

PMC-931011

ISSUE 6

SATURN USER-NETWORK INTERFACE

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

RPOHFP

Output

Receive PLCP Overhead Frame Position

(RPOHFP). RPOHFP locates the individual PLCP

path overhead bits in the receive overhead data

stream, RPOH. RPOHFP is logic 1 while bit 1 (the

most significant bit) of the path user channel octet

(F1)is present in the RPOH stream. RPOHFP is

updated on the falling edge of RPOHCLK.

RDLSIG

Output

n/a

Receive Data Link Signal (RDLSIG). In DS3

mode, RDLSIG contains the Path Maintenance

Data Link signal from the received C-bit Parity DS3

stream. RDLSIG is not affected by the RNETOP bit

in the S/UNI-PDH Data Link and FERF Control

RDLSIG contains the NR or GC data link signal, as

selected by the RNETOP bit, from the received E3

G.832 stream. In E3 G.751 mode, RDLSIG

contains the National Use bit from the received

G.751 E3 stream if the RNETOP bit is logic one.

RDLSIG is updated on the falling edge of RDLCLK.

RDLCLK

Output

n/a

Receive Data Link Clock (RDLCLK). RDLCLK is

active when a DS3 or E3 G.832 stream is being

processed. With an E3 G.751 stream, the RNETOP

bit in the S/UNI-PDH Data Link and FERF Control

active.

RCELL

Output

Receive Cell Indication (RCELL). RCELL pulses

once for every cell received. RCELL is updated

using timing derived from the receive input clock

(RCLK) and is active for a minimum of 8 RCLK

periods. RCELL is forced to logic 0 when in the

FIFO bypass mode.

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