3069RF-ZTAT Datasheet, PDF (106/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

5.1.2 Block Diagram
Figure 5.1 shows a block diagram of the interrupt controller.
NMI
input
IRQ input
OVF
TM....... E
...
TEI
TEIE
ISCR IER
IRQ input
section ISR
IPRA, IPRB
Interrupt
Priority
request
decision logic
Vector
number
Interrupt controller
[Legend]
ISCR: IRQ sense control register
IER: IRQ enable register
ISR: IRQ status register
IPRA: Interrupt priority register A
IPRB: Interrupt priority register B
SYSCR: System control register
UE
SYSCR
Figure 5.1 Interrupt Controller Block Diagram
CPU
I
CCR
UI
Rev. 5.0, 09/04, page 84 of 978