PXF4336 Datasheet, PDF (100/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Functional Description
Table 3-37
Parameter
RDF
Nrm
[cells]
Trm
[ms]
ADTF
[ms]
Mrm
[cells]
TCR
[cells/s]
CDF
ABR Parameters (cont’d)
ABM-P
Location
Default
Description
AVT-VS/VD 1
Table 3-53
Rate Decrease Factor
Used in the ACR calculation for the relative
rate marking mechanism.
See Section 3.5.1.3.1
ERC
32
Firmware
via Mailbox
Maximum number of cells (user and BRM)
between two in-rate FRM cells.
Configured globally in firmware (via mailbox)
Register
100
ERCCONF1
After Trm the next FRM cell is generated if at
least two in-rate cells (user or BRM) have
been sent.
Range x Granularity: (0..15) x 10 ms
Configured in global register ERCCONF1
AVT-VS/VD 500
Table 3-53
ACR Decrease Time Factor
Time-out of a connection; if no user cells are
received for this time the connection is
considered inactive and has to restart with
ICR.
ERC
2
Firmware
Constant
Controls the bandwidth allocation between
RM cells and user cells. Minimum 2 user cells
must be transmitted between two consecutive
FRM cells.
ERC
10
Calculated
Tagged cell rate
Limits insertion rate of out-of-rate FRM cells.
Parameter unused,
TCR triggered by Trm time-out (ToT)
ERC
1/16
Firmware
via Mailbox
Cutoff Decrease Factor
Controls the decrease in ACR as a result of
CRM (see below)
Range 1/64 .. 1
Data Sheet
100
2001-12-17