PM5316 Datasheet, PDF (177/491 Pages) PMC-Sierra, Inc – Quad Channel 155 Mbit/s SONET/SDH Framer and Aligner

SONET/SDH Payload Extractor/Aligner (SPECTRA-4x155)
Production
Registers 0141H, 0241H, 0341H, 0441H: RASE Interrupt Status
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R
R
R
R
R
R
R
R
Function
PSBFI
COAPSI
Z1/S1I
SFBERI
SDBERI
SFBERV
SDBERV
PSBFV
Default
X
X
X
X
X
X
X
X
PSBFV
The PSBFV bit indicates the protection switching byte failure alarm state on the indexed
channel. The alarm is declared (PSBFV is set high) when 12 successive frames, starting with
the last frame containing a previously consistent byte, have been received without three
consecutive frames containing identical K1 bytes. The alarm is removed (PSBFV is set low)
when three consecutive frames containing identical K1 bytes have been received.
SDBERV
The SDBERV bit indicates the signal degrade threshold crossing alarm state on the indexed
channel. The alarm is declared (SDBERV is set high) when the bit error rate exceeds the
threshold programmed in the RASE SD Declaring Threshold registers. The alarm is removed
(SDBERV is set low) when the bit error rate is below the threshold programmed in the RASE
SD Clearing Threshold registers.
SFBERV
The SFBERV bit indicates the signal failure threshold crossing alarm state on the indexed
channel. The alarm is declared (SFBERV is set high) when the bit error rate exceeds the
threshold programmed in the RASE SF Declaring Threshold registers. The alarm is removed
(SFBERV is set low) when the bit error rate is below the threshold programmed in the RASE
SF Clearing Threshold registers.
SDBERI
The SDBERI bit is set high when the signal degrade threshold crossing alarm is declared or
removed on the indexed channel. This bit is cleared when the RASE Interrupt Status register
is read. A clear-on-write version of this register bit may be found in the SPECTRA-4x155
Auxiliary Section/Line Interrupt Status registers.
Proprietary and Confidential to PMC-Sierra, Inc. and for its customers’ internal use
158
Document ID: PMC-1990822, Issue 4