pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 174

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

7.2.4
Register 14 UBufferOcc/DBufferOcc
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Bit
Bit
UBufferOcc(17:2) Upstream Buffer Occupation Counter
DBufferOcc(17:2) Downstream Buffer Occupation Counter
Data Sheet
15
7
Buffer Occupation Counter Registers
Upstream/Downstream Buffer Occupation Registers
14
6
These bit fields represent the most significant 16 bits of the internal
18-bit wide counters reflecting the number of cells currently stored
in the upstream/downstream cell storage RAM.
The CPU determines the buffer fill level with a granularity of 4 by
reading register UBufferOcc/DBufferOcc and left shifting the value
by 2:
fill_level(17:0):= (xBufferOcc(17:2) << 2)
Read only
0000
UBufferOcc 20
Read by CPU
H
13
5
UBufferOcc/DBufferOcc(17:10)
UBufferOcc/DBufferOcc(9:2)
H
12
4
174
DBufferOcc 21
11
3
10
2
Register Description
H
PXF 4333 V1.1
9
1
2001-12-17
ABM-3G
8
0