2 eirr: interrupt request register, 3 enir: interrupt request enable register – FUJITSU MB91460 SERIES FR60 User Manual
Page 342

326
Chapter 25 External Interrupt
4.Registers
4.2 EIRR: Interrupt Request Register
Status bit of a request of an external interrupt.
• EIRR0 (INT0-INT7): Address 030H (access: Byte, Half-word, Word)
(About attributes, see “
Meaning of Bit Attribute Symbols (Page No.10)
”.)
• EIRR1 (INT8-INT15): Address 034H (access: Byte, Half-word, Word)
(About attributes, see “
Meaning of Bit Attribute Symbols (Page No.10)
”.)
An external interrupt request bit (ERn) indicates the corresponding external interrupt request.
Note: n = 0 to 15
4.3 ENIR: Interrupt Request Enable Register
Enable bit of external interrupt requests.
• ENIR0 (INT0-INT7): Address 031H (access: Byte, Half-word, Word)
(About attributes, see “
Meaning of Bit Attribute Symbols (Page No.10)
”.)
• ENIR1 (INT8-INT15): Address 035H (access: Byte, Half-word, Word)
(About attributes, see “
Meaning of Bit Attribute Symbols (Page No.10)
”.)
An external interrupt request enable bit (ENn) enables the corresponding external interrupt request.
Note: n = 0 to 15
7
6
5
4
3
2
1
0
Bit
ER7
ER6
ER5
ER4
ER3
ER2
ER1
ER0
0
0
0
0
0
0
0
0
Initial value
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
Attribute
7
6
5
4
3
2
1
0
Bit
ER15
ER14
ER13
ER12
ER11
ER10
ER9
ER8
0
0
0
0
0
0
0
0
Initial value
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
R (RM1), W
Attribute
ERn
Description
Read value
Write value
0
No external interrupt request present
Clear external interrupt factor bits
1
External interrupt request present
No effect on operation
7
6
5
4
3
2
1
0
Bit
EN7
EN6
EN5
EN4
EN3
EN2
EN1
EN0
0
0
0
0
0
0
0
0
Initial value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Attribute
7
6
5
4
3
2
1
0
Bit
EN15
EN14
EN13
EN12
EN11
EN10
EN9
EN8
0
0
0
0
0
0
0
0
Initial value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Attribute
ERn
Description
0
External interrupt request output disable
1
External interrupt request output enable