MT9074AL Zarlink Semiconductor, Inc., MT9074AL Datasheet - Page 93

• Manufacturer Part Number: MT9074AL
• Description: T1/E1/J1 Single Chip Transceiver
• Manufacturer: Zarlink Semiconductor, Inc.

Data Sheet
Bit
3
2
1
0
RxSLPI
Table 126 - Interrupt Word Zero
Name
LOSI
CEFI
YI
(Page 4, Address 1BH) (E1)
Loss
When unmasked this interrupt
bit goes high whenever a loss of
signal (either analog - received
signal 20 or 40 dB below
nominal
consecutive
condition exists.
Consecutively Errored Frame
Alignment
unmasked this interrupt bit goes
high whenever the error in last
two frame alignment signals
occurs. Reading this register
clears this bit.
Receive Y-bit Interrupt. When
unmasked this interrupt goes
high whenever a change of
status
alignment occurs. Reading this
register clears this bit.
Receive SLIP Interrupt. When
unmasked this interrupt bit goes
high
frame slip occurs in the receive
elastic
register clears this bit.
Functional Description
whenever
of
buffer.
loss
or
Signal
Interrupt.
digital
0’s
of
Reading
a controlled
multiframe
Interrupt.
received)
-
When
192
this
Bit
7
6
5
4
3
2
1
0
PRBSERRI Pseudo Random Bit Sequence
CRCERRI CRC-4 Error Interrupt. When
FERRI
AIS16I
AUXPI
Name
EBITI
BPVI
RAII
Table 127 - Interrupt Word One
(Page 4, Address 1CH) (E1)
Errored
Signal Interrupt. When unmasked
this
whenever an erroneous bit in
frame alignment signal is detected
(provided the circuit is in terminal
frame sync). Reading this register
clears this bit.
unmasked this interrupt bit goes
high whenever a local CRC-4 error
occurs.
clears this bit.
Receive E-bit Error Interrupt.
When unmasked this interrupt bit
goes high upon detection of a
wrong E-bit in multiframe. Reading
this register clears this bit.
Alarm
Interrupt. When unmasked this
interrupt bit goes high whenever all
ones in time slot 16 occur.Reading
this register clears this bit.
Bipolar Violation Interrupt. When
unmasked this interrupt bit goes
high whenever a bipolar violation
(excluding HDB3 encoding)
encountered. Reading this register
clears this bit.
Error Interrupt. When unmasked
this interrupt bit goes high upon
detection of an error with a channel
selected
Reading this register clears this bit.
Auxiliary
Interrupt. When unmasked this
interrupt bit goes high whenever a
sequence of 512 bit consecutive
101010.
register clears this bit.
Remote
Interrupt. When unmasked this
interrupt bit goes high
whenever the bit 3 of non-frame
alignment signal is high. Reading
this register clears this bit.
Functional Description
interrupt
Reading
occur.
Framing
Indication
for
alarm
Pattern
bit
PRBS
Reading
MT9074
this
goes
Alignment
Indication
register
testing.
Signal
Alarm
high
this
is
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