MT9075A Mitel Networks Corporation, MT9075A Datasheet - Page 37

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

Preliminary Information
Bit
7-3
2-0
Bit
7
6
5
4
MFSYI
CSYNI
Name
Table 25: Interrupt Mask Word Three
Name
TX2-0
Table 26: Transmit Pulse Control Word
- - -
---
YI
(Page 01H, Address 1EH)
Multiframe
Interrupt.
(MFSYI = 1), an interrupt is initiated
when multiframe synchronization is
lost. Interrupt vector = 10000000.
CRC-4
Synchronization Interrupt. When
unmasked (CSYNI = 1), an interrupt
is initiated when CRC-4 multiframe
synchronization is lost. Interrupt
vector = 10000000.
Unused.
Remote
Alarm Interrupt. When unmasked
(YI = 1), an interrupt is initiated
when a remote signalling multiframe
alarm signal is received. Interrupt
vector = 10000000.
Unused. Set low for normal operation.
Transmit pulse amplitude. Select the
TX2-TX0 bits according to the line type,
value of termination resistors (R
transformer turns ratio used
TX2 TX1 TX0 Line( ) R
0
0
0
0
1
1
1
1
Functional Description
0
0
1
1
0
0
1
1
Signalling
Functional Description
0
1
0
1
0
1
1
1
When
120
120
120
120/75 12.1
75/120 12.1
75
75
75
Synchronization
Multiframe
Multiframe
15
unmasked
0
0
0
0
9.1
T
( ) Xfmr
1:2
1:1
1:2
1:2
1:2
1:1
1:2
1:2
T
), and
Bit
3
2
1
0
1SECI
Name
Table 25: Interrupt Mask Word Three
- - -
T1I
T2I
(Page 01H, Address 1EH)
One Second Status Interrupt.
When unmasked (1SECI = 1), an
interrupt is initiated when the 1SEC
status bit (page 03H, 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
from zero to one. Interrupt vector =
00001000.
T2
unmasked (T2I = 1), an interrupt is
initiated when the T2 timer bit (page
03H, address 12H, bit 4) changes
from zero to one. Interrupt vector =
00001000.
Unused
Functional Description
Timer
Timer
Interrupt.
Interrupt.
MT9075A
When
When
4-165