Panasonic MN101C77C - Manual (Page 140)

Chapter 3 Interrupts
III - 46 External Interrupts
Figure 3-3-7 Port 6 Key Interrupt Control Register (P6IMD : x'03F3E', R/W)
■ Port 6 Key Interrupt Control Register (P6IMD)
The port 6 key interrupt control register (P6IMD) selects if key interrupt is approved, and if external interrupt
IRQ4 is approved. Also, this register selects, by 2 bits, which pin on port 6 approved key interrupt.
0 1 2 4 3
( At reset : 0 - - - 0 0 0 0 ) P6IMD P6KYEN2 - P6KYEN3 P6KYEN4 - - P6KYEN1 IRQ4SEL
5 6 7
0
1
disable
P61, P60 key interrupt
selection
enable
P6KYEN1
0
1
disable
P63, P62 key interrupt
selection
enable
P6KYEN2
0
1
disable
P65, P64 key interrupt
selection
enable
P6KYEN3
0
1
disable
P67, P66 key interrupt
selection
enable
P6KYEN4
0
1
external interrupt IRQ4
IRQ4 interrupt source selection
P6 key interrupt
IRQ4SEL