PXF4333 Datasheet, PDF (183/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

ABM-3G
PXF 4333 V1.1
Register Description
Register 22 UUBPTH1
Upstream UTOPIA Backpressure Threshold Register 1
•
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Read/Write
FFFF_H
UUBPTH1
2D_H
Written by CPU
Bit
15
14
13
12
11
10
9
8
UUBPTH1(17:10)
Bit
7
6
5
4
3
2
1
0
UUBPTH1(9:2)
•
UUBPTH1(17:2)
Upstream UTOPIA Backpressure Threshold 1
This bit field determines the backpressure threshold for the
Upstream UTOPIA Receive Interface Group 1 (see Chapter 5.1.1)
with a granularity of 4 cells.
The CPU programs the threshold with a granularity of 4 by right
shifting the value by 2:
UUBPTH1(17:2):= (maximum_cells(17:0) >> 2)
Data Sheet
183
2001-12-17