pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 176
pxf4333
Manufacturer Part Number
pxf4333
Description
Abm 3g Atm Buf Fer Manager
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PXF4333.pdf
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7.2.5
Register 16 UBufMax/DBufMax
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Bit
Bit
UBufMax(17:2)
DBufMax(17:2)
Table 7-3
Data Sheet
15
7
provides typical values and related RAM sizes:
Buffer Threshold and Occupation Capture Registers
Upstream/Downstream Buffer Maximum Threshold Registers
14
Upstream Buffer Maximum Threshold
Downstream Buffer Maximum Threshold
These bit fields determine a maximum limit for the total upstream
and downstream buffer size with a granularity of 4 cells. The values
depend on:
• The size of the external cell pointer RAM,
• Whether the downstream cell storage RAM is connected.
See
The CPU programs the maximum number of cells with a granularity
of 4 by right shifting the value by 2:
xBufMax(17:2):= (maximum_cells(17:0) >> 2)
6
Read/Write
0000
UBufMax
Written by CPU
Table 7-3
H
13
5
UBufMax/DBufMax(17:10)
UBufMax/DBufMax(9:2)
for recommended values.
24
H
12
4
176
DBufMax
11
3
10
2
25
Register Description
H
PXF 4333 V1.1
9
1
2001-12-17
ABM-3G
8
0
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