Datasheet

Section 5 Interrupt Controller
Rev. 4.00 Sep 27, 2006 page 114 of 1130
REJ09B0327-0400
5.1.2 Block Diagram
A block diagram of the interrupt controller is shown in figure 5.1.
SYSCR
NMI input
IRQ input
Internal interrupt
requests
SWDTEND to PS2IC
INTM1 INTM0
NMIEG
NMI input unit
IRQ input unit
ISR
ISCR IER
ICR
Interrupt controller
Priority
determination
Interrupt
request
Vector
number
I, UI
CCR
CPU
IRQ sense control register
IRQ enable register
IRQ status register
Interrupt control register
System control register
Legend:
ISCR:
IER:
ISR:
ICR:
SYSCR:
Figure 5.1 Block Diagram of Interrupt Controller