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PM73121AAL1gator II
PMC-Sierra, Inc.
L
PMC-980620
,VVXH
AAL1 SAR Processor
Data Sheet
35235,(7$5<$1'&21),'(17,$/7230&6,(55$,1&$1')25,76&86720(56,17(51$/86(
Sticky bits for the following events are also maintained on a per-queue basis in memory (refer to
“R_ERROR_STKY Word Format” on page 158
):
A cell was received while the queue was in underrun.
Receive overrun: a cell was received, causing the maximum buffer depth to be exceeded.
This event causes a forced underrun condition.
A resume function has occurred: a cell was received and placed in the receive buffer
causing an end to the underrun condition.
A cell was dropped in accordance with Recommendation I.363.1 “Fast SN Algorithm”.
This event causes a forced underrun condition.
A cell was dropped because of a forced underrun.
A cell was dropped because of a blank allocation table or disabled receiver.
A cell was received.
A cell was dropped because a valid pointer was not found while the queue was in the
underrun condition.
A valid pointer was received.
An errored pointer was received (parity check failed).
An SRTS resume occurred.
A cell was received while the SRTS queue was in underrun.
A cell was dropped because a pointer mismatch occurred causing a forced underrun
condition.
The AAL1gator II sets the status bits every time it detects one of the events listed previously. The
R_POINTER_REFRAMES
256
Count of pointer reframes.
R_PTR_PAR_ERR
256
Count of pointer parity errors.
R_MISINSERTED
256
Count of misinserted cells.
T_CELL_CNT
256
Count of billable data cells transmitted to the UTOPIA interface.
T_COND_CELL_CNT
256
Counts data conditioned cells transmitted to the UTOPIA interface.
T_SUPPRESSED_CELL_CNT
256
Counts cells not sent because of a line resynchronization, or, if the
device was in UDF-HS mode, because TX_ACTIVE is set. Also if
SUPPRESS_TRANSMISSION is set, any cells not sent will
increment this counter.
Table 2.
Statistics Counters (Continued)
Counter Name
Number of
Counters
Counter Description