Hitachi H8S/2670, Reference Manual

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3.3.4 IRQ Sense Control Registers H and L (ISCRH, ISCRL)
ISCRH
Bit 15 14 13 12 11 10 9 8
IRQ15SCB IRQ15SCA IRQ14SCB IRQ14SCA IRQ13SCB IRQ13SCA IRQ12SCB IRQ12SCA
Initial value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Bit 7 6 5 4 3 2 1 0
IRQ11SCB IRQ11SCA IRQ10SCB IRQ10SCA IRQ9SCB IRQ9SCA IRQ8SCB IRQ8SCA
Initial value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
ISCRL
Bit 15 14 13 12 11 10 9 8
IRQ7SCB IRQ7SCA IRQ6SCB IRQ6SCA IRQ5SCB IRQ5SCA IRQ4SCB IRQ4SCA
Initial value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Bit 7 6 5 4 3 2 1 0
IRQ3SCB IRQ3SCA IRQ2SCB IRQ2SCA IRQ1SCB IRQ1SCA IRQ0SCB IRQ0SCA
Initial value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
The ISCR registers are two 16-bit readable/writable registers that select rising edge, falling edge,
or both edge detection, or level sensing, for the input at pins
IRQ15
to
IRQ0
.
The ISCR registers are initialized to H'0000 by a reset and in hardware standby mode.