Cypress FM4 Series - External Interrupt Enable Register (ENIR)

CHAPTER 9: External Interrupt and NMI Control Sections
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 445
4.1 External Interrupt Enable Register (ENIR)
The ENIR register is used to control masking an external interrupt request output.
Register configuration
bit
31
16
Field
EN[31:16]
Attribute
R/W
Initial value
0x0000
bit
15
0
Field
EN[15:0]
Attribute
R/W
Initial value
0x0000
Register functions
[bit31:0] EN31 to EN0: External interrupt enable bits
EN31 to EN0 bits correspond to pins INT31 to INT00.
It is not possible to set the bit corresponding to a pin that is not defined in the product specifications.
bit
Description
0
Disables the output of an external interrupt request of INTx pin corresponding to the relevant
bit.
1
Enables the output of an external interrupt request of INTx pin corresponding to the relevant
bit.
This function enables the interrupt request output corresponding to the bit that is set to 1 in this register,
and outputs a request to the interrupt controller. The pin corresponding to the bit that is set to 0 holds an
interrupt factor, but outputs no request to the interrupt controller.