57
3.2.4
Register Configuration
Table 3.3 summarizes the registers of the interrupt controller.
Table 3.3
Interrupt Controller Registers
Name
Abbreviation
R/W
Initial
Value
Address
*
1
Interrupt control register
INTCR
R/W
H'00
H'FF31
IRQ sense control register H
ISCRH
R/W
H'0000
H'FE1A
IRQ sense control register L
ISCRL
R/W
H'0000
H'FE1C
IRQ enable register
IER
R/W
H'0000
H'FF32
IRQ status register
ISR
R/(W)
*
2
H'0000
H'FF34
IRQ pin select register
ITSR
R/W
H'0000
H'FE16
Software standby release IRQ enable register
SSIER
R/W
H'0007
H'FE18
Interrupt priority register A
IPRA
R/W
H'7777
H'FE00
Interrupt priority register B
IPRB
R/W
H'7777
H'FE02
Interrupt priority register C
IPRC
R/W
H'7777
H'FE04
Interrupt priority register D
IPRD
R/W
H'7777
H'FE06
Interrupt priority register E
IPRE
R/W
H'7777
H'FE08
Interrupt priority register F
IPRF
R/W
H'7777
H'FE0A
Interrupt priority register G
IPRG
R/W
H'7777
H'FE0C
Interrupt priority register H
IPRH
R/W
H'7777
H'FE0E
Interrupt priority register I
IPRI
R/W
H'7777
H'FE10
Interrupt priority register J
IPRJ
R/W
H'7777
H'FE12
Interrupt priority register K
IPRK
R/W
H'7777
H'FE14
Notes: 1. Lower 16 bits of the address.
2. Only 0 can be written, to clear flags.
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