Motorola PowerQUICC II MPC8280 Series Reference Manual page 1046

OAM Support
Figure 31-17 shows the FMC and BRC cell structure.
GFC/ VPI
VPI
0010 = Performance Management
0000 = Forward Monitoring (FMC)
0001 = Backward Reporting (BRC)
Monitoring Total User
Sequence Cell 0+1
Number Count
(MCSN) (TUC0+1)
1 octet 2 octets
1
BEDC appears in FMCs only.
0+1
2
TRCC , BLER, and TRCC
0
Figure 31-17. Performance Monitoring Cell Structure (FMCs and BRCs)
Table 31-10 describes performance monitoring cell fields.
Table 31-10. Performance Monitoring Cell Fields
Field
MCSN Monitoring cell sequence number. The sequence number of the performance
monitoring cell (modulo 256).
TUC Total user cell 0+1 count. Counts all user cells (modulo 65,536) sent before the
0+1
FMC was inserted.
TUC Total user cell 0 count. Counts CLP = 0 user cells (modulo 65,536) sent before the
0
FMC was inserted.
TSTP Time stamp. Used to indicate when the cell was inserted.
BEDC Block error detection code. Even parity over the payload of the block of user cells
0+1
sent since the last FMC.
TRCC Total received cell count 0. Counts CLP=0 user cells (modulo 65,536) received
0
before the FMC was received.
BLER Block error result. Counts error parity bits detected by the BEDC of the received
FMC.
TRCC Total received cell count 0+1. Counts all user cells (modulo 65,536) received
0+1
before the FMC was received.
31-32
Freescale Semiconductor, Inc.
Header = 5 bytes
VCI PTI CLP HEC
Block Error Total User
Detection Cell 0
Code Count
1
(BEDC0+1) (TUC0)
2 octets 2 octets
appear in BRCs only.
0+1
Description
MPC8280 PowerQUICC II Family Reference Manual
For More Information On This Product,
Go to: www.freescale.com
Payload = 48 bytes
4 4 45 x 8
OAM Function
Function
Cell Specific
Type
Type Fields
Total
Time-
Received
Unused
Stamp
Cells 0
(TSTP)
(TRCC0)
4 octets 29 octets 2 octets
6 10
Reserved CRC-10
Block Total
Error Received
Result Cells 0+1
2 2
(BLER) (TRCC0+1)
1 octet 2 octets
BRC FMC
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No Yes
Yes No
Yes No
Yes No
MOTOROLA
2