
MT9075A
Preliminary Information
4-178
Bit
Name
Functional Description
7 - 0
EFAS7
-
EFAS0
Errored FAS Counter.
An 8 bit
counter that is incremented once for
every receive frame alignment
signal that contains one or more
errors.
Table 56 - Errored Frame Alignment Signal
Counter (Page 04H, Address 1AH)
Bit
Name
Functional Description
7
RAI
Remote Alarm Indication.
This bit
is set to one in the event of receipt
of a remote alarm, i.e. A(RAI) = 1. It
is cleared when the register is read.
6
AIS
Alarm Indication Signal.
This bit is
set to one in the event of receipt of
an all ones alarm. It is cleared when
the register is read.
5
AIS16
AIS Time Slot 16 Alarm.
This bit is
set to one in the event of receipt of
an all ones alarm in the time slot 16.
It is cleared when the register is
read.
4
LOS
Loss of Signal.
This bit is set to
one in the event of loss of received
signal. It is cleared when the
register is read.
3
AUXP
Auxiliary Alarm.
This bit is set to
one in the event of receipt of the
auxiliary alarm pattern. It is cleared
when the register is read.
2
MFALM
Multiframe Alarm.
This bit is set
to one in the event of receipt of a
multiframe alarm. It is cleared when
the register is read.
1
RSLIP
Received Slip.
This bit is set to one
in the event of receive elastic buffer
slip. It is cleared when the register is
read.
0
- - -
Unused.
Table 57 - Alarm Reporting Latch
(Page 04H, Address 1BH)
Bit
Name
Functional Description
7 - 0
BPV15
-
BPV8
BPV Counter.
The most significant
eight bits of a 16 bit counter that is
incremented once for every bipolar
violation error received.
Table 58 - Most Significant Bits of the BPV
Counter (Page 04H, Address 1CH)
Bit
Name
Functional Description
7 - 0
BPV7
-
BPV0
BPV Counter.
The least significant
eight bits of a 16 bit counter that is
incremented once for every bipolar
violation error received.
Table 59 - Least Significant Bits of the PBV
Counter (Page 04H, Address 1DH)
Bit
Name
Functional Description
7 - 2
- - -
Unused
1 - 0
CC9-
CC8
CRC-4 Error Counter.
The most
significant eight bits of the CRC-4
error counter.
Table 60 - CRC-4 Error Counter
(Page 04H, Address 1EH)
Bit
Name
Functional Description
7 - 0
CC7-
CC0
CRC-4 Error Counter.
The least
significant eight bits of the CRC-4
error counter.
Table 61 - CRC-4 Error Counter
(Page 04H, Address 1FH)