MT9075BP1 Zarlink, MT9075BP1 Datasheet - Page 35
MT9075BP1
Manufacturer Part Number
MT9075BP1
Description
PB FREE E1 SINGLE CHIP TRANSCEIVER
Manufacturer
Zarlink
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Interrupt Mask Word Three (address 1EH)
Bit 7
HDLC Interrupt Masks (page 0BH&0CH, address 16H)
Bit 7
After a device reset (RESET pin or RST control bit), interrupts from the following interrupt mask words are masked:
•
•
•
and the interrupts of mask word zero are unmasked.
All interrupts may be suspended, without changing the interrupt mask words, by making the SPND control bit (page
01H, address 1AH) high. Also, when pin TAIS is held low, all interrupts are suspended automatically. This allows for
system initialization without spurious interrupts.
MFSYI
National use bit interrupt mask word
Interrupt mask words one through three.
HDLC interrupt mask word.
Ga
CSYNI
EOPD
TEOP
- - -
EopR
Synchronization
D7
10000000
Alarm
D7
01000000
Counter
Indication
D7
00100000
Counter
Overflow
D7
00010000
One Second
D7
00001000
YI
Category and
Interrupt
Vector
1SEC
TxFl
D0
D0
D0
D0
D0
FATxU
T1I
Zarlink Semiconductor Inc.
SYNI - Loss of Synchronization.
MFSYI - Loss of Multiframe Sync.
CSYNI - Loss of CRC-4 Sync.
YI - Remote Multiframe Sync. Fail.
RAII - Remote Alarm Indication.
AISI - Alarm Indication Signal.
AIS16I - AIS on Channel 16.
LOSI - Loss of Signal.
AUXPI - Auxiliary Pattern.
EBI - Receive E-bit Error.
CRCI - CRC-4 Error.
CEFI - Consecutive Errored FASs.
FERI - Frame Alignment Signal Error.
BPVI - Bipolar Violation Error.
RCR0 - RAI and CRC Error Active.
RCR1 - RAI and CRC Error End.
BERI - Bit Error.
EBO - Receive E-bit Error.
CRCO - CRC-4 Error.
FERO - Frame Alignment Signal.
BPVO - Bipolar Violation.
BERO - Bit Error.
CMFO - CRC-4 Multiframe.
1SECI - One Second Timer.
CALNI - CRC-4 Multiframe Alignment.
T1I - Timer T1 expires.
T2I - Timer T2 expires.
MT9075B
T2I
RxFf
Interrupt Description
35
Bit 0
Bit 0
- - -
RxOv
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