CHAPTER 7 INTERRUPT/EXCEPTION PROCESSING FUNCTION
User’s Manual U12688EJ4V0UM00
216
7.3.4 Interrupt control register (xxICn)
An interrupt control register is assigned to each interrupt request (maskable interrupt) and sets the control
conditions for each maskable interrupt request.
This register can be read/written in 8- or 1-bit units.
Address
FFFFF100H to
FFFFF15CH
7
xxIFn
xxICn
6
xxMKn
5
0
4
0
3
0
2
xxPRn2
1
xxPRn1
0
xxPRn0
After reset
47H
Bit Position
Bit Name
Function
7
xxIFn
Interrupt Request Flag
This is an interrupt request flag.
0: Interrupt request not issued
1: Interrupt request issued
The flag xxlFn is reset automatically by the hardware if an interrupt request is received.
6
xxMKn
Mask Flag
This is an interrupt mask flag.
0: Enables interrupt processing
1: Disables interrupt processing (pending)
Priority
8 levels of priority order are specified in each interrupt.
xxPRn2
xxPRn1
xxPRn0
Interrupt Priority Specification Bit
0
0
0
Specifies level 0 (highest).
0
0
1
Specifies level 1.
0
1
0
Specifies level 2.
0
1
1
Specifies level 3.
1
0
0
Specifies level 4.
1
0
1
Specifies level 5.
1
1
0
Specifies level 6.
1
1
1
Specifies level 7 (lowest).
2 to 0
xxPRn2 to
xxPRn0
Remark xx: Identification name of each peripheral unit (OV, P10 to P15, CM, CS, SE, SR, ST, AD, DMA)
n:
Peripheral unit number (None, or 0 to 3, 10 to 15, 40, 41).
Address and bit of each interrupt control register is as follows:
Table 7-2. Interrupt Control Register Addresses and Bits (1/2)
Bit
Address
Register
7
6
5
4
3
2
1
0
FFFFF100H
OVIC10
OVIF10
OVMK10
0
0
0
OVPR102
OVPR101
OVPR100
FFFFF102H
OVIC11
OVIC11
OVMK11
0
0
0
OVPR112
OVPR111
OVPR110
FFFFF104H
OVIC12
OVIF12
OVMK12
0
0
0
OVPR122
OVPR121
OVPR120
Содержание V850E/MS1 UPD703100
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