
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
497
Equation 1:
Alarm =
(OOF AND OOFEN
(LOF AND LOFEN
(LOS AND LOSEN
(LAIS AND LAISEN
(LRDI AND LRDIEN
(APSBF
(STIU AND STIUEN
(STIM AND STIMEN
(SDBER
(SFBER
) OR
) OR
) OR
) OR
) OR
AND APSBFEN
) OR
) OR
) OR
AND SDBEREN
AND SFBEREN
) OR
)
RSALM
: The RSALM indication is defined by Equation 1. The bits from and including
OOFEN to SFBEREN in Register 00E3H: SARC Section RSALM Enable are register
configuration bits that individually enable or disable each defect.
RLAISINS
: The RLAISINS indication is defined by Equation 1. The bits from and including
OOFEN to SFBEREN in Register 00E4H: SARC Section Receive AIS-L Insert Enable are
register configuration bits that individually enable or disable each defect. The RLAISINS inserts
L-AIS on the received transport overhead to be output on the RTOH port.
TLRDIINS
: The TLRDIINS indication is defined by Equation 1. The bits from and including
OOFEN to SFBEREN in Register 00E5H: SARC Section Transmit RDI-L Insert Enable are
register configuration bits that individually enable or disable each defect. The TLRDIINS is the
L-RDI returned to the far end device.
APS and BIP-L, TAPSINS and TLREIINS
: The received filtered APS (K1,K2) bytes and the
L-BIP are output on the receive ring control port (RRCP) and sent to the transmit side to
optionally return the APS bytes and the L-REI to the far end device.
17.10.2
Received Path Alarm Block
The Received Path Alarm Block processes all path defects detected by the overhead processor
and prepares the consequent action indications. Three consequent action indications are
defined: the receive path alarm (RPALM, which is connected to chip output RALM), the receive
path AIS insertion (RPAISINS), and the transmit path ERDI insertion (TPERDIINS[2:0])
indications.
The first step for generating consequent action indications is to monitor the ALLPAISC, PAIS,
PAISC, PLOP, and PLOPC signals in order to generate PAISPTR and PLOPTR defects. With
the PAISPTR and PLOPTR defects, the Receive Path Alarm Block can prepare the receive path
alarm (RPALM), the receive path AIS insertion (RPAISINS), and the transmit path ERDI
insertion (TPERDIINS[2:0]) indications.