pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 180

• Manufacturer Part Number: pxf4333
• Description: Abm 3g Atm Buf Fer Manager
• Manufacturer: Infineon Technologies Corporation

Register 19 CLP1DIS
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Bit
Bit
UCLP1DIS(13:6)
DCLP1DIS(13:6)
Data Sheet
15
7
CLP1 Discard Global Threshold Registers
14
Upstream CLP1 Discard Threshold value
Downstream CLP1 Discard Threshold value
These 8-bit values determine a global 14-bit threshold value
(granularity of 64 cells) that enables discard of low-priority (CLP=’1’)
cells.
The threshold values are compared with the per scheduler low
priority cell counter SBOccLP (Scheduler Block Low Priority
Occupancy) (see Internal Table 4: Scheduler Block Occupancy
Table Transfer Registers SBOC0..SBOC4) and enables all CLP1
related discard thresholds, i.e.:
TCT1.BufCiCLP1(7:0) (Register 34: TCT1)
TCT2.SBCiCLP1(7:0) (Register 35: TCT2)
TCT0.QueueCiCLP1(11:0) (Register 33: TCT0)
As a second condition, CLP1 related discard thresholds are only
effective, if the specific queue that is asked to accept the cell is
associated to a traffic class that has EPD function disabled
(EPDen=’0’, see
TCT1, TCT2, TCT3” on Page
The CPU programs the threshold with a granularity of 64 cells by
right shifting the value by 6:
xCLP1DIS(13:6):= (threshold_value(13:0) >> 6)
6
Read/Write
0000
CLP1DIS
Written by CPU
H
13
5
2A
“Traffic Class Table Transfer Registers TCT0,
DCLP1DIS(13:6)
UCLP1DIS(13:6)
H
12
4
180
11
195).
3
10
2
Register Description
PXF 4333 V1.1
9
1
2001-12-17
ABM-3G
8
0