Switching Between External Interrupt And Dtp Requests; Figure 9.4.3A Switching Between External Interrupt And Dtp Requests - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

9.4 Operations

9.4.3 Switching between external interrupt and DTP requests

To switch between external interrupt and DTP requests, use the ISE bit in the ICR register corresponding
to this resource, which is in the interrupt controller. Each pin is individually assigned ICR. Thus, a pin is
used for a DTP request if '1' is written to the ISE bit of the corresponding ICR, and is used for an external
interrupt request if '0' is written to the bit.
External
Pin
Interrupt/DTP

Figure 9.4.3a Switching between external interrupt and DTP requests

114 Chapter 9: DTP/External Interrupt
Interrupt controller
ICR 0
xx
1
ICR
yy
F2MC-16 CPU
DTP
External interrupt
MB90580 Series