Preliminary Information
MT9075A
Bit
Name
Functional Description
Bit
Name
Functional Description
7
SYNI
Synchronization Interrupt. When
unmasked (SYNI = 0) an interrupt is
initiated when a loss of basic frame
synchronization condition exists.
Interrupt vector = 10000000.
7
EBI
Receive E-bit Interrupt. When
unmasked an interrupt is initiated
when a receive E-bit indicates a
remote
CRC-4
error.
1
-
unmasked, 0 - masked. Interrupt
vector = 00100000.
6
5
4
3
2
1
RAII
AISI
Remote
Alarm
Indication
6
5
CRCI
CEFI
CRC-4 Error Interrupt. When
unmasked an interrupt is initiated
when a local CRC-4 error occurs. 1
- unmasked, 0 - masked. Interrupt
vector = 00100000.
Interrupt. When unmasked (RAII
= 0) a received RAI will initiate an
interrupt.
Interrupt
vector
=
01000000.
Alarm Indication Signal Interrupt.
When unmasked (AISI = 0) a
received AIS will initiate an
Consecutively
Errored
FASs
Interrupt. When unmasked an
interrupt is initiated when two
interrupt.
Interrupt
vector
=
consecutive
errored
frame
01000000.
alignment signals are received. 1 -
unmasked, 0 - masked. Interrupt
vector = 00100000.
AIS16I Channel 16 Alarm Indication
Signal Interrupt. When unmasked
(AIS16I = 0), a received AIS16 will
initiate an interrupt. Interrupt vector
= 01000000.
4
3
BPVI
Bipolar Violation Interrupt. When
unmasked an interrupt is initiated
when
a
bipolar violation error
LOSI
Loss of Signal Interrupt. When
unmasked (LOSI = 0) an interrupt is
initiated when a loss of signal
condition exists. Interrupt vector =
01000000.
occurs. 1 - unmasked, 0 - masked.
Interrupt vector = 00100000.
RCR0I RAI and Continuous CRC Error
Interrupt. When unmasked an
interrupt is initiated when the
received A bit has been one, and
the received E bits have been zero,
continuously for greater than 10
milliseconds (see page 04H,
address 19H) 1- unmasked, 0 -
FERI
Frame Error Interrupt. When
unmasked (FERI = 0), an interrupt
is initiated when an error in the
frame alignment signal occurs.
Interrupt vector = 00100000.
masked.
Interrupt
vector
=
BPVO Bipolar
Violation
Interrupt.
Counter
00100000.
Overflow
When
unmasked (BPVO = 0), an interrupt
is initiated when the bipolar violation
error counter changes form FFFFH
to 0H. Interrupt vector = 00010000.
2
RCR1I RAI and Continuous CRC Error
Interrupt. When unmasked an
interrupt is initiated when the
received A bit had been set, and the
received
E
bits
were
low,
0
SLPI
SLIP Interrupt. When unmasked
(SLPI = 0), an interrupt is initiated
when a controlled frame slip occurs.
Interrupt vector = 00000100.
continuously for greater than 10
milliseconds, but less than 450
milliseconds (see page 04H,
address 19H). 1 - unmasked, 0 -
masked.
00100000.
Interrupt
vector
=
Table 22 - Interrupt Mask Word Zero
(Page 01H, Address 1BH)
1
BERI
Bit
Error
Interrupt.
When
unmasked an interrupt is initiated
when a bit error occurs. 1 -
unmasked, 0 - masked. Interrupt
vector = 00100000.
Table 23 - Interrupt Mask Word One
(Page 01H, Address 1CH) (continued)
4-163
MITEL [ MITEL NETWORKS CORPORATION ]
