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5 how do i enable, disable, and clear interrupts – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 25 External Interrupt

7.Q & A

7.5 How do I enable, disable, and clear interrupts?

Enable flag for interrupt requests, interrupt request flag

Use interrupt enabling bits (ENIR0.ENx. x = 0-7) and (ENIR1.ENx. x = 8-15) to enable interrupts.

Use interrupt request bits (EIRR0.ERx. x = 0-7) and (EIRR1.ERx. x = 8-15) to clear interrupt requests.

Interrupt enabling bit (En [n = 0-15])

To disable interrupt requests

Sets to “0”

To enable interrupt requests

Sets to “1”

Interrupt request bit (Ern [n = 0-15])

To clear interrupt requests

Writes “0”