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Setting Procedure: interrupt controller and peripheral module

Latest Updated:06/20/2013

Question:

Both the interrupt controller (ICU) and the peripheral module contain interrupt request enable bits. What is the setting procedure?

Answer:

To enable interrupt requests, first enable interrupts in the peripheral module, and then enable interrupt requests for the corresponding interrupt request enable bit (IEN) in the interrupt request enable register (IER) in the ICU.

To disable interrupts, with exception of cases where interrupts must be disabled in the peripheral module individually (when multiple sources exist for a single interrupt vector), interrupts can be disabled using only the IEN bit in the IER register in the ICU.

Suitable Products
RX62N, RX621
RX62T
RX610
RX62G
RX630
RX63N, RX631
RX63T
RX210
RX220
RX110
RX111