MT9075A Mitel Networks Corporation, MT9075A Datasheet - Page 35

• Manufacturer Part Number: MT9075A
• Description: E1 Single Chip Transceiver
• Manufacturer: Mitel Networks Corporation

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