Section 5 Interrupt Controller
A block diagram of the interrupt controller is shown in figure 5.1.
SYSCR
NMI input
IRQ input
Internal interrupt
request
SWDTEND to TEI2
Legend:
IRQ sense control register
ISCR:
IRQ enable register
IER:
IRQ status register
ISR:
Interrupt priority register
IPR:
System control register
SYSCR:
Rev. 6.00 Mar 15, 2006 page 68 of 570
REJ09B0211-0600
INTM1, INTM0
NMIEG
NMI input unit
IRQ input unit
ISR
ISCR
IER
Interrupt controller
Figure 5.1 Block Diagram of Interrupt Controller
Interrupt
request
Vector number
Priority
determination
I2 to I0
IPR
CPU
I
CCR
EXR