PM5364 pmc-sierra, PM5364 Datasheet - Page 127

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

10.6.9
10.6.10
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
(TBER)
The SVCA provides an interrupt output to indicate any changes in the status of output pointer
justification (NJE, PJE) and FIFO overflows or underflows. Each interrupt source is
independently maskable.
The SVCA may generate double NDFs for a given path when coming out of AIS. In the first of
the two NDFs it may give an invalid pointer value. It recovers from the second NDF onwards.
The SVCA may also remove the J1 pulse of a path in AIS. If the J1 pulse is it returns on the
second NDF. This behavior will change depending on the incoming pointer values.
Low-Order (VT/TU) Path Signal Degrade and Excessive Error Defect Monitoring
The Low-Order (VT/TU) Path Signal Detect and Excessive Error Defect Monitoring (TBER)
block provides 2 independent bit error rate (BER) monitoring circuits (BERM block). They are
used to monitor the VT/TU path bit error rate indicator (BIP-2). One BERM block monitors the
VT/TU Signal Degrade (SD) alarm and the other BERM block monitors the VT/TU excessive
error defect (DEXC) alarm.
The tributary alarm summary reporting block (TASR) detects the signal fail (SF) condition
based on tributary defects. The TASR receives defect indication signals (LOP, AIS, AIS_AGGR,
UNEQ, TIM, TIU, PSLM, PSLU, LOM, PDI, DEXC and SD) from upstream tributary
processors. A tributary SF alarm is generated when any one of the enabled upstream alarms for
the tributary is asserted. Table 15 summarizes the source of alarms that contribute to the SF
condition. The bits to enable the contribution of an upstream alarm to the SF condition are
located in the TASR Indirect Data Register #1. An interrupt is optionally generated when a SF
condition is reported.
The TASR receives per STS-1/STM-0 LOM state information from the VTPI block. A per STS-
1/STM-0 interrupt is optionally generated upon a change of LOM state. The TASR provides per
STS-1/STM-0 LOM status and interrupt indication bits to trace the source of a LOM alarm.
Tributary Alarm Summary Reporting (TASR)
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
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