Block Diagram; Figure 5.1 Interrupt Controller Block Diagram - Hitachi H8/3062 Hardware Manual

5.1.2

Block Diagram

Figure 5.1 shows a block diagram of the interrupt controller.
NMI
input
IRQ input
OVF
TME
.
.
.
.
.
.
.
.
.
.
TEI
TEIE
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
98
ISCR IER
IRQ input
section ISR
Interrupt controller

Figure 5.1 Interrupt Controller Block Diagram

IPRA, IPRB
Interrupt
request
Priority
decision logic
Vector
number
SYSCR
CPU
I
CCR
UI
UE