MT9075B Mitel Networks Corporation, MT9075B Datasheet - Page 37

• Manufacturer Part Number: MT9075B
• Description: E1 Single Chip Transceiver
• Manufacturer: Mitel Networks Corporation

Preliminary Information
Bit
Bit
2
1
0
7
6
5
4
Table 24 - Interrupt Mask Word Two
CMFOI
BEROI
AUXPI
MFSYI
CSYNI
Name
Name
Table 25: Interrupt Mask Word Three
- - -
(0)
(0)
(0)
(0)
(0)
(0)
YI
(Page 01H, Address 1DH)
(Page 01H, Address 1EH)
Bit
Interrupt. When unmasked (BERO
= 1), an interrupt is initiated when
the bit error counter overflows.
Interrupt vector = 00010000.
Auxiliary Pattern Interrupt. When
unmasked (AUXPI = 1), an interrupt
is initiated when the AUXP status bit
of page 03H, address 15H goes
high. Interrupt vector = 01000000.
Receive
Counter Overflow Interrupt. When
unmasked (CMFO = 1), an interrupt
is
multiframe
Interrupt vector = 00010000.
Multiframe
Interrupt.
(MFSYI = 1), an interrupt is
initiated
synchronization is lost. Interrupt
vector = 10000000.
CRC-4
Synchronization Interrupt. When
unmasked
interrupt is initiated when CRC-4
multiframe synchronization is lost.
Interrupt vector = 10000000.
Unused.
Remote Signalling Multiframe
Alarm Interrupt. When unmasked
(YI = 1), an interrupt is initiated
when
multiframe
received.
10000000.
initiated
Functional Description
Error
Functional Description
a
Interrupt
CRC-4
(CSYNI
when
counter
Counter
When
when
alarm
remote
Synchronization
the
Multiframe
=
signal
Multiframe
vector
multiframe
unmasked
overflows.
signalling
Overflow
1),
CRC-4
an
is
=
Bit
3
2
1
0
1SECI
Name
Table 25: Interrupt Mask Word Three
- - -
T1I
T2I
(0)
(0)
(0)
(Page 01H, Address 1EH)
One Second Status Interrupt.
When unmasked (1SECI = 1), an
interrupt is initiated when the
1SEC
address 12H, bit 7) changes from
zero to one. Interrupt vector =
00001000.
T1
unmasked (T1I = 1), an interrupt is
initiated when the T1 timer bit
(page 03H, address 12H, bit 5)
changes
Interrupt vector = 00001000.
T2
unmasked (T2I = 1), an interrupt is
initiated when the T2 timer bit
(page 03H, address 12H, bit 4)
changes
Interrupt vector = 00001000.
Unused
Functional Description
Timer
Timer
status
from
from
Interrupt.
Interrupt.
bit
MT9075B
zero
zero
(page
to
to
When
When
03H,
one.
one.
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