pxf4336 Infineon Technologies Corporation, pxf4336 Datasheet - Page 230

• Manufacturer Part Number: pxf4336
• Description: Abm Premium Atm Buf Fer Manager
• Manufacturer: Infineon Technologies Corporation

QCIHYS(3:0)
Data Sheet
10
11
Queue Congestion Indication Hysteresis
This bit field determines the hysteresis that is applied to the Queue
Congestion Indication threshold evaluation. The queue specific
threshold is programmed in table QCIT.
The hysteresis determines a lower threshold TH
TH
The Delta
with:
Delta
The following table shows the operation and resulting example
TH
cells:
QCIHYS
(2:0):
0d
1d
2d
4d
8d
10d
hysi
hysi
i
:= Threshold
:= Threshold
values for the example of a threshold programmed to 1024
i
value is determined by bit field DH(2:0) and Threshold
4k bits (queues 0..4095 are monitored)
8k bits (queues 0..8191 are monitored)
Delta
0
Threshold
Threshold
Threshold
Threshold
Threshold
i
:=
i
i
>> [QCIHYS(3:0)]
- Delta
i
i
i
i
i
230
>>1
>>2
>>4
>>8
>>10
(hysteresis disabled)
i
hysteresis ineffective)
Register Description
hys
Example:
TH
TH
TH
TH
TH
PXF 4336 V1.1
with
hysi
hysi
hysi
hysi
hysi
:= 1024
:= 512
:= 768
:= 960
:= 1020
2001-12-17
ABM-P
i