pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 74

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

3.4.1.7.5 Overall Cell Acceptance Algorithm
The overall decision whether an arriving cell is buffered is based on the results of the
previous algorithms. The arriving cell can only be accepted if all algorithms would accept
the cell and if buffer space is available. To obtain the overall decision whether a correctly
received cell is finally buffered the following algorithm applies:
IF
THEN
ELSE
See
3.4.1.8
In addition to the occupancy counters, which may also be used for statistical purposes,
the ABM-3G device provides several dedicated counters for statistics purposes. These
are summarized in
•
Table 3-20
Data Sheet
Figure 4-9
Reg 17
Reg 18
(ExceedMaxBuffer = FALSE) AND
(ExceedMaxQueueLimit = FALSE) AND
(ExceedMaxNg = FALSE) AND
(ExceedCLP1 = FALSE) AND
(CellAcceptedByEPD = TRUE) AND
(CellAcceptedByPPD = TRUE) AND
(CellAcceptedByHyst = TRUE)
BufferIncomingCell
DiscardIncomingCell
IF
THEN
IF
THEN
Statistical Counters
Statistical Counters
Name
UMAC/DMAC
UMIC/DMIC
for an example of threshold configuration.
PPDen AND UserToUserCell AND (EndOfPacket = FALSE)
DiscardRestOfPacket = TRUE
PPDen = FALSE AND UserToUserCell AND ExceedMaxNg
DiscardRestOfPacket = TRUE
Table
3-20:
74
16 Maximum buffer occupancy value
16 Minimum buffer occupancy value
Comment
since last readout
since last readout
Functional Description
PXF 4333 V1.1
2001-12-17
ABM-3G