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

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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