PXB4330 Datasheet, PDF (83/201 Pages) Infineon Technologies AG – ICs for Communications

PXB 4330
Register Descriptions
UBOC(15:0)
DBOC(15:0)
Upstream Buffer Occupation Counter
Downstream Buffer Occupation Counter
These 16-bit counter values reflect the number of cells currently
stored in the dedicated cell storage RAM.
Register 4 UNRTOC/DNRTOC
Upstream/Downstream Non-Real-Time Buffer Occupation Registers
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Read only
0000_H
UNRTOC 22_H
Read by CPU
DNRTOC 23_H
Bit
15
14
13
12
11
10
9
8
UNRTOC/DNRTOC(15:8)
Bit
7
•
UNRTOC(15:0)
DNRTOC(15:0)
6
5
4
3
2
1
0
UNRTOC/DNRTOC(7:0)
Upstream Non-Real-Time Buffer Occupation Counter
Downstream Non-Real-Time Buffer Occupation Counter
These 16-bit counter values reflect the number of non-real-time
cells currently stored in the dedicated cell storage RAM.
Non-real-time cells belong to traffic classes with the real-time
indication bit ’RTind’ cleared in the traffic class table (Transfer
Register TCT1).
Data Sheet
6-83
09.99