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IDT82P2281
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
Programming Information
263
October 7, 2003
E1 FRMR Interrupt Indication 1
(053H)
ISMFPI:
= 0: The received bit is not the first bit of each CAS Signaling Multi-Frame.
= 1: The first bit of each CAS Signaling Multi-Frame is received.
This bit will be cleared if a ’1’ is written to it. It can not be updated during out of CAS Signaling Multi-Frame synchronization state
ICSMFPI:
= 0: The received bit is not the first bit of each CRC Sub Multi-Frame.
= 1: The first bit of each CRC Sub Multi-Frame is received.
This bit will be cleared if a ’1’ is written to it. It can not be updated during out of CRC Multi-Frame synchronization state.
SMFERI:
When Signaling Multi-Frame is synchronized, the received Signaling Multi-Frame alignment signals are compared with the expected one (‘0000’).
When one or more bits do not match, a single CAS Signaling Multi-Frame alignment pattern error event is generated. During out of CAS Signaling
Multi-Frame synchronization state, the CAS Signaling Multi-Frame Alignment Pattern Error detection is suspended.
= 0: No CAS Signaling Multi-Frame Alignment Pattern Error event is detected.
= 1: The CAS Signaling Multi-Frame Alignment Pattern Error event is detected.
This bit will be cleared if a ’1’ is written to it.
ICMFPI:
= 0: The received bit is not the first bit of each CRC Multi-Frame.
= 1: The first bit of each CRC Multi-Frame is received.
This bit will be cleared if a ’1’ is written to it. It can not be updated during out of CRC Multi-Frame synchronization state.
CMFERI:
When CRC Multi-Frame is synchronized, the received CRC Multi-Frame alignment signals are compared with the expected one (‘001011’). If one
or more bits do not match, a single CRC Multi-Frame alignment pattern error event is generated. During out of CRC Multi-Frame synchronization
state, the CRC Multi-Frame Alignment Pattern Error detection is suspended.
= 0: No CRC Multi-Frame Alignment Pattern Error event is detected.
= 1: The CRC Multi-Frame Alignment Pattern Error event is detected.
This bit will be cleared if a ’1’ is written to it.
CRCEI:
When CRC Multi-Frame is synchronized and the local calculated CRC-4 of the current received CRC Sub Multi-Frame does not match the
received CRC-4 of the next received CRC Sub Multi-Frame, a single CRC-4 error event is generated. During out of CRC Multi-Frame synchronization
state, the CRC-4 Error detection is suspended.
= 0: No CRC-4 Error event is detected.
= 1: The CRC-4 Error event is detected.
This bit will be cleared if a ’1’ is written to it.
Bit No.
7
6
5
4
3
2
1
0
Bit Name
ISMFPI
ICSMFPI
SMFERI
ICMFPI
CMFERI
CRCEI
FERI
COFAI
Type
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0