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Extension Instruction Specifications
3-32
(a) Note on the description of word/half-word data multiply-and-accumulate instructions and multiply-and-
accumulate instructions
When executing a word/half-word data multiply-and-accumulate instruction followed by a multiply-and-accumulate
instruction, the result produced by the word/half-word data multiply-and-accumulate instruction is used in the
execution of the subsequent multiply-and-accumulate instruction. Therefore, it is essential to not initiate the
subsequent multiply-and-accumulate instruction until after the result that is required from the word/half-word data
multiply-and-accumulate instruction has been output. As a result, one cycle must be inserted between the word/
half-word data multiply-and-accumulate instruction and the subsequent multiply-and-accumulate instruction.
This note applies to the following instructions:
<Word/half-word data multiply-and-accumulate instructions>
MAC instruction, MACH instruction, MACU instruction, MACHU instruction
<Multiply-and-accumulate instructions>
MAC instruction, MACH instruction, MACU instruction, MACHU instruction, MACB instruction,
MACBU instruction
Instruction
decoding
DEC
EX
MEM
WB
Instruction decoding
Operation
Word/half-word data
Multiply-and-
accumulate instruction (2)
Insert one cycle
M u lt ip l y -and -ac c u mu lat e
instruction (1) has output the
result that is required by
mu lt i p ly -a n d -acc u mu lat e
instruction (2)
Result can be
referenced
Multiply-and-accumulate instruction (1)
Operation
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 ...