PXF4333 Datasheet, PDF (199/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

Register WAR.Word64Sel(1:0) =’01’:
ABM-3G
PXF 4333 V1.1
Register Description
Bit
15
Bit
7
14
13
12
11
10
9
8
unused(3:0)
QueueCiCLP1(11:8)
6
5
4
3
2
1
0
QueueCiCLP1(7:0)
QueueCiCLP1
(11:0)
Combined Queue Threshold of this Traffic Class for the
following cases:
a) if CLPT=0 (CLP transparent bit is not true) and EPDen=0
Þ CLP1 queue threshold for CLP=1 cells
(cells with CLP=1 are discarded)
b) if CLPT=0 and EPDen=1
Þ EPD GFR queue threshold. If that threshold and additionally
BufNrtEPD (of the respective traffic class) is exceeded then
EPD is triggered.
The threshold is defined with a granularity of 4:
Threshold = QueueCiCLP1(7:0) * 4 Cells
•
Register WAR.Word64Sel(1:0) =’10’:
Bit
15
14
13
12
11
10
9
8
TrafClassOccNg(15:8)
Bit
7
6
5
4
3
2
1
0
TrafClassOccNg(7:0)
TrafClassOccNg Current Buffer Occupation in number of cells for this traffic class.
(15:0)
Do not Write in normal operation.
Data Sheet
199
2001-12-17