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2-17
CPU
[Interrupt Accept Group Register (IAGR)]
R halfword/byte access
During a register read, the interrupt accept group register (IAGR) indicates the smallest group number of the groups
that are generating an interrupt of the interrupt levels accepted by the CPU, which are indicated by IM2 to IM0 of
the PSW. This register is allocated to address x'34000200 in the internal I/O space. The GN4 to GN0 field (5 bits)
corresponds to the interrupt group number. A branch destination of the interrupt program for each group can be
found, for example, by referencing the contents of the address obtained by adding the interrupt accept group register
value to the leading address of the interrupt vector table. The interrupt accept group register is a read only register,
and writing cannot be performed. When there are no interrupt factors of the applicable interrupt level, IAGR
becomes 0.
Accessing IAGR is meaningless during non-maskable interrupts.
Fig. 2-5-3 Interrupt Accept Group Register
[Interrupt Vector Address Register (IVARn)]
R/W halfword access
The interrupt vector register (IVAR0 to IVAR6) contains the lower 16 bits of the start address of the interrupt
handler for interrupts of the accepted level. This register is allocated between addresses x'20000000 to x'20000018
in the internal I/O space. The start address of interrupt levels 0 to 6 correspond to IVAR0 to IVAR6. When an
interrupt occurs, control is transferred to the address which is comprised of the upper 16 bits (x'4000) and the lower
16 bits (IVARn). This register is undefined when the system is reset.
Fig. 2-5-4 Interrupt Vector Address Register
0
0
15
0
14 13
12 11 10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
GN
0
IAGR
0
15
0
14 13 12 11 10
9
8
7
6
5
4
3
2
1
IVARn
Содержание MN103001G/F01K
Страница 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Страница 2: ......
Страница 4: ......
Страница 6: ......
Страница 7: ...14 A D Converter 15 I O Ports 16 Internal Flash Memory 17 Ordering Mask ROM Appendix 14 15 16 17 ...
Страница 8: ......
Страница 9: ...Table of Contents List of Figures and Tables 0 ...
Страница 26: ...xviii ...
Страница 27: ...1 0 1 General Specifications ...
Страница 35: ...2 CPU 2 ...
Страница 57: ...3 Extension Instruction Specifications 3 ...
Страница 96: ...Extension Instruction Specifications 3 40 ...
Страница 97: ...4 Memory Modes 3 4 ...
Страница 102: ...Memory Modes 4 6 ...
Страница 103: ...5 Operating Mode 5 ...
Страница 107: ...6 Clock Generator 6 13 ...
Страница 111: ...7 Internal Memory 7 ...
Страница 114: ...Internal Memory 7 4 ...
Страница 115: ...8 Bus Controller BC 8 ...
Страница 189: ...9 Interrupt Controller 9 ...
Страница 220: ...Interrupt Controller 9 32 ...
Страница 221: ...10 8 bit Timers 9 10 ...
Страница 254: ...8 bit Timers 10 34 ...
Страница 255: ...11 16 bit Timers 11 ...
Страница 292: ...16 bit Timers 11 38 ...
Страница 293: ...12 Watchdog Timer 11 12 ...
Страница 302: ...Watchdog Timer 12 10 ...
Страница 303: ...13 Serial Interface 13 ...
Страница 354: ...Serial Interface 13 52 ...
Страница 355: ...14 A D Converter 14 ...
Страница 367: ...15 I O Ports 15 ...
Страница 431: ...16 Internal Flash Memory 16 ...
Страница 439: ...17 17 Ordering Mask ROM ...
Страница 442: ...Ordering Mask ROM 17 4 ...
Страница 443: ...Appendix ...