RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Register 0x80020 : A1SP Add Queue FIFO Register (A_ADDQ_FIFO)
Bit
Type
Function
Default
15
RO
Rsvd
WO
WO
EMPTY
Unused
1
14
X
13:8
7:0
OFFSET
XXH
XXH
QUEUE_NUM
This register is the write port of a 64 word FIFO that is used to add a queue on a
first come first serve basis.
QUEUE_NUM
The number of the queue being added. Note that this field is invalid on
reads.
OFFSET
This field indicates the offset from the cell scheduling reference value. This
offset can be used to spread the scheduling of cells across multiple frames in
order to control clumping (See Add Queue description in Processor Interface
section . Note that this field is invalid on reads.)
Note: In SDF-MF mode, OFFSET must be set equal to FRAMES_PER_CELL
in QUEUE_CONFIG in the transmit queue table in order to insure that the
first pointer generated has a value of 0.
Note: For SDF-MF DBCES queues, OFFSET must be set equal to
FRAMES_PER_CELL in the transmit queue table.
EMPTY
This field indicates when the Add Queue FIFO is empty. It can be polled to
determine when the A1SP module has finished processing the ADDQ_FIFO
entries that were in the FIFO.
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL
242
PMC [ PMC-SIERRA, INC ]
