CHAPTER 6 DMA FUNCTIONS (DMA CONTROLLER)
146
User’s Manual U14492EJ3V0UD
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Bit Position
Bit Name
Function
Sets the count direction of the source address for DMA channel n (n = 0 to 3).
SAD1
SAD0
Count Direction
0
0
Increment
0
1
Decrement
1
0
Fixed
1
1
Setting prohibited
7, 6
SAD1,
SAD0
Sets the count direction of the destination address for DMA channel n (n = 0 to 3).
DAD1
DAD0
Count Direction
0
0
Increment
0
1
Decrement
1
0
Fixed
1
1
Setting prohibited
5, 4
DAD1,
DAD0
Sets the transfer mode during DMA transfer.
TM1
TM0
Transfer Mode
0
0
Single transfer mode
0
1
Single-step transfer mode
1
0
Setting prohibited
1
1
Block transfer mode
3, 2
TM1, TM0
Содержание V850E/IA1 mPD703116
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