Released
Datasheet
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATM Traffic Management Device
8.4.1 Transmit VO Control Block
Address base: 120000h (480000h byte)
Index: 1h
Number of entries: A0h
Type: Read/Write
Table 28. Transmit VO Control Block Summary
Byte
Offset
Long
Offset
Read or
Write
Name
Description
VO configuration.
0-78h
7Ch
0-1Eh
1Fh
TX_VO_CONFIG
Not used
R/W
R/W
Write with a 0 to maintain software compatibility
with future versions.
80-F8h
FCh
20-3Eh TX_VO_STATE
3Fh Not used
R/W
R/W
VO state.
Write with a 0 to maintain software compatibility
with future versions.
100-178h
17Ch
40-5Eh TX_VO_CELLS_PRES
R/W
R/W
Bit field of the SCs with cells present for each
VO.
5Fh
Not used
Write with a 0 to maintain software compatibility
with future versions.
180-1F8h
1FCh
60-7Eh TX_VO_SERVICE_STATE_0
7Fh Not used
R/W
R/W
State word 0 of the service algorithm for this VO.
Write with a 0 to maintain software compatibility
with future versions.
200-278h
27Ch
80-9Eh TX_VO_SERVICE_STATE_1
9Fh Not used
R/W
R/W
State word 1 of the service algorithm for this VO.
Write with a 0 to maintain software compatibility
with future versions.
8.4.1.1 TX_VO_CONFIG
Offset: 0h (0h byte)
Type: Read/Write
Index: 1h
Number of entries: 31
Format: Refer to the following table.
Field (Bits)
Description
Not present
(31:16)
RAM is not present in these bit locations.
TX_VO_EXP_MAX_QD
(15:12)
Exponent of the maximum per-VO queue depth. Initialize to the proper setting. Limits
the TX_VO_CUR_QD to:
TX_VO_CUR_QD ≤ 1 + 2TX_VO_EXP_MAX_QD
A value of 0h causes all cells for this VO to be dropped. A value of Fh limits this SC to
31744 cells.
160
PMC [ PMC-SIERRA, INC ]
