PM5313 datasheet(67/646 Pages) PMC

67 / 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

10.4

Section/Line Status and Alarms Signals

Pin Name

Type

No.

Function

RFPO

Tristate

Output

C22

The receive frame pulse (RFPO) is an 8 kHz signal

derived from the receive clock RCLK when the

framing alignment has been found and the

SPECTRA-622 is in frame (the OOF output and

RCLK cycle every 9720 RCLK cycles (STS-12 /

STM-4).

RFPO can be tristated using the ROH_TS bit in the

RTOC Receive Overhead Control register.

RFPO is updated on the rising edge of RCLK.

TFP

Tristate

Output

E26

The transmit frame pulse (TFP) is an 8 kHz signal

derived from the transmit clock TCLK when the

transmit interface is in frame alignment. TFP pulses

high for one TCLK cycle every 9720 TCLK cycles

(STS-12/STM-4).

TFP can be tristated using the TOH_TS bit in the

TTOC Transmit Overhead Output Control register.

TFP is updated on the rising edge of TCLK.

SALM

Output

E18

The section alarm (SALM) output is set high when

an out of frame (OOF), loss of signal (LOS), loss of

frame (LOF), line alarm indication signal (LAIS), line

remote defect indication (LRDI), section trace

identifier mismatch (RS-TIM), section trace

identifier unstable (RS-TIU), signal fail (SF) or

signal degrade (SD) alarm is detected. Each alarm

indication can be independently enabled using bits

in the SPECTRA-622 Section Alarm Output Control

#1 and #2 registers. SALM is set low when none of

the enabled alarms are active.

SALM is updated on the rising edge of RCLK.

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