PXF4336 Datasheet, PDF (117/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Functional Description
The tables are accessed by the microcontroller via control registers, data transfer
registers and mask registers. While the control registers “MAR” on Page 368 and
“WAR” on Page 370 are common to all tables (except SCTI tables), sets of mask
registers are dedicated or shared among some tables. Data transfer registers are always
dedicated to the specific table.
3.6.2 LCI: Local Connection Identifier Table
The basic function of the LCI table is assigning the connection (identified by the LCI) to
one out of 8192 queues per direction. Single connections can be assigned to a dedicated
queue (per VC queueing) or multiple connections might be assigned to the same queue.
“LCI Table Transfer Registers” on Page 237 provides the details.
3.6.3 QCT: Queue Configuration Table
The basic function of the QCT table is to determine queue specific parameters and to
assign the queue to dedicated resources (Traffic Class, Scheduler Block, Merge Group).
“Queue Configuration Table Transfer Registers” on Page 258 provides the details.
3.6.4 QPT: Queue Parameter Table
The function of the QPT table is to configure the weight factor (in case a queue is
assigned to the WFQ scheduler) and the peak cell rate value (in case the peak cell rate
shaper is enabled).
“Queue Parameter Table Transfer Registers” on Page 296 provides the details.
3.6.5 TCT: Traffic Class Table
The function of the TCT table is to configure the buffer management behavior of up to
16 traffic classes.
“Traffic Class Table Transfer Registers” on Page 241 provides the details.
3.6.6 SBOC: Scheduler Block Occupancy Table
The function of the SBOC table (for 2*128 scheduler blocks) is to maintain the buffer
filling levels associated with the dedicated scheduler and to control the scheduler
specific DBA threshold indications.
“Scheduler Block Occupancy Table Transfer Registers” on Page 270 provides the
details.
Data Sheet
117
2001-12-17