PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
R_UNDERRUNS Word Format
Field (Bits)
Description
R_UNDERRUNS
(15:0)
16-bit rollover count of the occurrences of an underrun on this queue. This is
the atmfCESBufUnderflows counter. Initialize to 0. Once initialized, do not
write to this word. Underruns are counted by the RALP, which does not know
an underrun occurred until a cell is received while in underrun. To ensure the
underrun count is correct, the counter is not incremented until the queue exits
the underrun state and enters the resume state underrun condition. To
determine if the queue is in underrun, check the level of the R_UNDERRUN
bit in R_LINE_STATE register (refer to “R_LINE_STATE Word Format” on
page 156). If this bit is set, then increment the underrun count by one to get the
current count.
R_LOST_CELLS Word Format
Field (Bits)
Description
R_LOST_CELLS
(15:0)
16-bit rollover count of cells that were detected as lost. This is the
atmfCESLostCells counter in the CES specification. Initialize to 0. Once
initialized, do not write to this word.
R_OVERRUNS Word Format
Field (Bits)
Description
R_OVERRUNS
(15:0)
16-bit rollover count of the occurrences of an overrun on this queue. This is
the atmfCESBufOverflows counter in the CES specification. Initialize to 0.
Once initialized, do not write to this word.
R_POINTER_REFRAMES Word Format
Field (Bits)
Description
R_POINTER_REFRAMES
(15:0)
16-bit rollover count of the occurrences of pointer reframes on this queue. This
is the atmfCESPointerReframes counter in the CES specification. Initialize to
0. Once initialized, do not write to this word.
R_PTR_PAR_ERR Word Format
Field (Bits)
Description
R_PTR_PAR_ERR
(15:0)
16-bit rollover count of the occurrences of pointer parity errors on this queue.
This is the atmfCESPointerParityErrors counter in the CES specification.
Initialize to 0. Once initialized, do not write to this word.
ꢀꢅꢁ
PMC [ PMC-SIERRA, INC ]
