mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 84

• Manufacturer Part Number: mt9074ap1
• Description: T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
• Manufacturer: Zarlink Semiconductor

Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
COFAI
PRBSI
Name
CRCO
OOFO
Name
CRCI
BPVI
PDVI
YELI
FEO
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.
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.
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.
Bipolar Violation Interrupt. When unmasked this interrupt bit goes high
whenever a bipolar violation (excluding B8ZS encoding) is encountered.
Reading this register clears this bit.
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.
Pulse Density Violation Interrupt. When unmasked this interrupt bit goes
high whenever in the absence of B8ZS coding 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.
Framing Bit Error Counter Overflow Interrupt. When unmasked this
interrupt bit goes high whenever the framing bit error counter changes from
FFH to 00H. Reading this register clears this bit.
CRC-6 Error Counter Overflow Interrupt. When unmasked this interrupt
bit goes high whenever the CRC-6 error counter changes from FFH to 00H.
Reading this register clears this bit.
Out Of Frame Counter Overflow Interrupt. When unmasked this interrupt
bit goes high whenever the out of frame counter changes state from
changes from FFH to 00H. Reading this register clears this bit.
Table 67 - Interrupt Word One
Table 68 - Interrupt Word Two
(Page 4, Address 1CH) (T1)
(Page 4, Address 1DH) (T1)
Zarlink Semiconductor Inc.
MT9074
84
Functional Description
Functional Description
Data Sheet