PEB 2091
PEF 2091
Operational Description
LT --> NT Superframe
Frame Number
...Z
A
Z
B
A
C
B
D
C
Current CRC Bits Related to
Frame Number
Current FEBE Bit Related to
Frame Number
0
1
2
NT --> LT Superframe
Frame Number
...0
1
0
2
1
3
2
4
3
Current CRC Bits Related to
Frame Number
Current FEBE Bit Related to
Frame Number
Z
A
B
Figure 77
Relationship between CRC and FEBE Bits and Superframe Number
NEBE Indications
In NT and LT-RP modes each NEBE will be indicated in the following way
– The MON-1 message NEBE is issued via IOM®-2 and µP interface if only a NEBE
occurred
– The MON-1 message FNBE is issued via IOM®-2 and µP interface if NEBE and a
FEBE occurred simultaneously
For informations about MON-1 structure and codes, see "MON-1 Codes", page 227.
Note 49: In LT and COT modes a NEBE will not be actively indicated by the IEC-Q. To
monitor NEBE violations the NEBE counter should be read out, see "Block
Error Counters", page 178.
FEBE Indications
In NT and LT-RP modes each FEBE will be indicated in the following way
– The MON-1 message FEBE is issued via IOM®-2 and µP interface if only a FEBE
have occurred
– The MON-1 message FNBE is issued via IOM®-2 and µP interface if NEBE and a
FEBE have occurred simultaneously
For informations about MON-1 structure and codes, see "MON-1 Codes", page 227.
Semiconductor Group
177
Data Sheet 01.99
INFINEON [ Infineon ]
