![](http://datasheet.mmic.net.cn/30000/M38223E4-XXXHP_datasheet_2360327/M38223E4-XXXHP_297.png)
3.3 Control registers
APPENDIX
3822 GROUP USER’S MANUAL
3–27
Fig. 3.3.18 Structure of interrupt request register 2
Fig. 3.3.17 Structure of interrupt request register 1
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 1 (IREQ1) [Address 3C 16]
B
Name
Functions
At reset R W
Interrupt request register 1
0
0 : No interrupt request issued
1 : Interrupt request issued
0
V
INT0 interrupt request
bit
1
INT1 interrupt request
bit
0
2
Serial I/O receive
interrupt request bit
0
3
Serial I/O transmit
interrupt request bit
0
V
: “0” can be set by software, but “1” cannot be set.
4
Timer X interrupt
request bit
0
5
Timer Y interrupt
request bit
0
6
Timer 2 interrupt
request bit
0
7
Timer 3 interrupt
request bit
0
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
V
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt request register 2 (IREQ2) [Address 3D 16]
B
Name
Functions
At reset RW
Interrupt request register 2
0
CNTR0 interrupt
request bit
0 : No interrupt request issued
1 : Interrupt request issued
0
1
CNTR1 interrupt
request bit
0
2
Timer 1 interrupt
request bit
0
3
INT2 interrupt
request bit
0
V
: “0” can be set by software, but “1” cannot be set.
4
INT3 interrupt
request bit
0
5
Key input interrupt
request bit
0
6
ADT/A-D conversion
interrupt request bit
0
7
Nothing is allocated. This bit cannot be written to
and is fixed to “0” at reading.
0
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
V
×
V
0