Panasonic MN101C77C, F77G user manual External Interrupt Control Register, Readable / Writable

Chapter 3 Interrupts

3-3-3 Control Registers

The external interrupt input signal, which operated in each external interrupt 0 to 4 interface generate interrupt requests.

External interrupt 0 to 4 interface are controlled by the external interrupt control register (IRQnICR) and the both edges interrupt control register (EDGDT). And external interrupt interface 0 to 1 are controlled by the noise filter control register (NFCTR0), external interrupt interface 2 to 4 are controlled by the noise filter control register (NFCTR1), and external interrupt interface 4 is controlled the port 6 key interrupt control register (P6IMD).

Table 3-3-2 shows the list of registers, control external interrupt 0 to 4.

Table 3-3-2 External Interrupt Control Register

External Interrupt	Register	Address	R/W	Function	Page
	IRQ0ICR	x'03FE2'	R/W	External interrupt 0 control register	III -17
External interrupt 0
	EDGDT	x'03F8F'	R/W	Both edges interrupt control register	III -49
	NFCTR0	x'03F8E'	R/W	Noise filter control register 0	III -47
	IRQ1ICR	x'03FE3'	R/W	External interrupt 1 control register	III -18
External interrupt 1
	EDGDT	x'03F8F'	R/W	Both edges interrupt control register	III -49
	NFCTR0	x'03F8E'	R/W	Noise filter control register 0	III -47
	IRQ2ICR	x'03FE4'	R/W	External interrupt 2 control register	III -19
External interrupt 2
	EDGDT	x'03F8F'	R/W	Both edges interrupt control register	III -49
	NFCTR1	x'03F8D'	R/W	Noise filter control register 1	III -48
	IRQ3ICR	x'03FE5'	R/W	External interrupt 3 control register	III -20
External interrupt 3
	EDGDT	x'03F8F'	R/W	Both edges interrupt control register	III -49
	NFCTR1	x'03F8D'	R/W	Noise filter control register 1	III -48
	IRQ4ICR	x'03FE6'	R/W	External interrupt 4 control register	III -21
External interrupt 4	EDGDT	x'03F8F'	R/W	Both edges interrupt control register	III -49
	P6IMD	x'03F3E'	R/W	Port 6 key interrupt control register	III -50
	NFCTR1	x'03F8D'	R/W	Noise filter control register 1	III -48

R/W : Readable / Writable.

III- 42 External Interrupts