MT9076
Preliminary Information
Bit
Name
Functional Description
7
FEI
Framing Bit Error Interrupt. When unmasked this interrupt bit goes high whenever an
erroneous framing bit is detected (provided the circuit is in terminal frame sync). Reading this
register clears this bit.
6
5
4
CRCI
YELI
CRC-6 Error Interrupt. When unmasked this interrupt bit goes high whenever a local CRC-6
error occurs. Reading this register clears this bit.
Yellow Alarm Interrupt. When unmasked this interrupt bit goes high upon detection of a
yellow alarm. Reading this register clears this bit.
COFAI Change of Frame Alignment Interrupt. When unmasked this interrupt bit goes high
whenever a change of frame alignment occurs after a reframe. Reading this register clears
this bit.
3
2
LCVI
Line Code Violation Interrupt. When unmasked this interrupt bit goes high whenever a line
code violation (excluding B8ZS encoding) is encountered. Reading this register clears this bit.
PRBSI Psuedo Random Bit Sequence Error Interrupt. When unmasked this interrupt bit goes high
upon detection of an error with a channel selected for PRBS testing. Reading this register
clears this bit.
1
0
PDVI
Pulse Density Violation Interrupt. When unmasked this interrupt bit goes high whenever, in
the absense of B8ZS encoding, a sequence of 16 consecutive zeros is received on the line, or
the incoming pulse density is less than N ones in a time frame of 8(N+1) where N = 1 to 23. In
the case of B8ZS coding, the interrupt is set upon detection of 8 consecutive zeros. Reading
this register clears this bit.
- - -
Unused.
Table 75 - Interrupt Word One
(Page 4, Address 1CH) (T1)
84
MITEL [ MITEL NETWORKS CORPORATION ]
