Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

6.1.2

Block Diagram

A block diagram of the interrupt controller is shown in figure 6.1.
SYSCR
NM input
IRQ input
Internal
interrupt
requests
[Legend]
IEGR
IENR
IRQR
ICR
SYSCR
Rev. 2.0, 11/00, page 98 of 1037
INTM1, INTM0
NMIEG1, NMIEG0
NMI input unit
IRQ input
unit IRQR
IEGR IENR
Interrupt controller
: IRQ edge select register
: IRQ enable register
: IRQ status register
: Interrupt control register
: System control register
Figure 6.1 Block Diagram of Interrupt Controller
Interrupt
request
Vector
number
Priority
determina-
tion
I, UI
ICR
CCR
CPU