Block Diagram - Renesas H8S/2319 series Hardware Manual

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
request
SWDTEND to TEI
Legend:
ISCR : IRQ sense control register
IER : IRQ enable register
ISR : IRQ status register
IPR : Interrupt priority register
SYSCR : System control register
Rev. 5.00, 12/03, page 110 of 1088
INTM1 INTM0
NMIEG
NMI input unit
IRQ input unit
ISR
ISCR IER
Interrupt controller
Figure 5-1 Block Diagram of Interrupt Controller
Priority
determination
IPR
CPU
Interrupt
request
Vector
number
I
CCR
I2 to I0
EXR