PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
Table 2. Statistics Counters (Continued)
Number of
Counter Name
Counter Description
Counters
R_POINTER_REFRAMES
R_PTR_PAR_ERR
256
256
256
256
256
256
Count of pointer reframes.
Count of pointer parity errors.
Count of misinserted cells.
R_MISINSERTED
T_CELL_CNT
Count of billable data cells transmitted to the UTOPIA interface.
Counts data conditioned cells transmitted to the UTOPIA interface.
T_COND_CELL_CNT
T_SUPPRESSED_CELL_CNT
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.
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
microprocessor clears the status bits after it recognizes the event. Because these bits will be polled
at a low rate, relative to their occurrence, it is not possible to determine the exact number of
ꢁꢉ
PMC [ PMC-SIERRA, INC ]
