Panasonic MN101C77C User Manual
Chapter 3 Interrupts
III - 42
External 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
R/W : Readable / Writable.
External Interrupt
Register
Address
R/W
Function
Page
IRQ0ICR
x'03FE2'
R/W
External interrupt 0 control register
III -17
EDGDT
x'03F8F'
R/W
Both edges interrupt control register
III -49
NFCTR0
x'03F8E'
R/W
Noise filter control regis ter 0
III -47
IRQ1ICR
x'03FE3'
R/W
External interrupt 1 control register
III -18
EDGDT
x'03F8F'
R/W
Both edges interrupt control register
III -49
NFCTR0
x'03F8E'
R/W
Noise filter control regis ter 0
III -47
IRQ2ICR
x'03FE4'
R/W
External interrupt 2 control register
III -19
EDGDT
x'03F8F'
R/W
Both edges interrupt control register
III -49
NFCTR1
x'03F8D'
R/W
Noise filter control regis ter 1
III -48
IRQ3ICR
x'03FE5'
R/W
External interrupt 3 control register
III -20
EDGDT
x'03F8F'
R/W
Both edges interrupt control register
III -49
NFCTR1
x'03F8D'
R/W
Noise filter control regis ter 1
III -48
IRQ4ICR
x'03FE6'
R/W
External interrupt 4 control register
III -21
EDGDT
x'03F8F'
R/W
Both edges interrupt control register
III -49
P6IMD
x'03F3E'
R/W
Port 6 key interrupt control regis ter
III -50
NFCTR1
x'03F8D'
R/W
Noise filter control regis ter 1
III -48
External interrupt 4
External interrupt 0
External interrupt 1
External interrupt 2
External interrupt 3