Motorola MPC8260 - Manual (Page 810)

29-30 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA
Part IV. Communications Processor Module
Table 29-10 describes performance monitoring cell Þelds.
29.6.6.1 Running a Performance Block Test
For bidirectional PM block tests, FMCs are monitored at the receive side and generated at
the transmit side. The following setup is required to run a bidirectional PM block test on an
active VCC:
1. Assign one of the available 64 performance monitoring tables by writing to both
RCT[PMT] and TCT[PMT] and initializing the one chosen. See Section 29.10.3,
ÒOAM Performance Monitoring Tables.Ó
2. For PM F5 segment termination set RCT[SEGF]; for PM F5 end-to-end termination
set RCT[ENDF].
3. Finally, set the channelÕs RCT[PM] and TCT[PM] and the receive raw cellÕs
RCT[PM].
For unidirectional PM block tests:
¥ For PM block monitoring only, set only the RCT Þelds above.
¥ For PM block generation only, set only the TCT Þelds above.
To run a block test on a VPC, assign all the VCCs of the tested VPC to the same
performance monitoring table. ConÞgure RCT[PMT] and TCT[PMT] to specify the
performance monitoring table associated with each F4 channel.
29.6.6.2 PM Block Monitoring
PM block monitoring is done by the receiver. After initialization (see Section 29.6.6.1),
whenever a cell is received for a VCC or VPC, the TRCC counters are incremented and the
Table 29-10. Performance Monitoring Cell Fields
Field Description BRC FMC
MCSN Monitoring cell sequence number. The sequence number of the performance monitoring
cell (modulo 256). Yes Yes
TUC
0+1
Total user cell 0+1 count. Counts all user cells (modulo 65,536) sent before the FMC was
inserted. Yes Yes
TUC
0
Total user cell 0 count. Counts CLP = 0 user cells (modulo 65,536) sent before the FMC
was inserted. Yes Yes
TSTP Time stamp. Used to indicate when the cell was inserted. Yes Yes
BEDC
0+1
Block error detection code. Even parity over the payload of the block of user cells sent
since the last FMC. No Yes
TRCC
0
Total received cell count 0. Counts CLP=0 user cells (modulo 65,536) received before the
FMC was received. Yes No
BLER Block error result. Counts error parity bits detected by the BEDC of the received FMC. Yes No
TRCC
0+1
Total received cell count 0+1. Counts all user cells (modulo 65,536) received before the
FMC was received. Yes No