CHAPTER 6 DMA FUNCTIONS (DMA CONTROLLER)
User’s Manual U12688EJ4V0UM00
168
6.3.4 DMA addressing control registers 0 to 3 (DADC0 to DADC3)
These 16-bit registers are used to control the DMA transfer operation modes for DMA channel n (n = 0 to 3).
These registers can be read/written in 16-bit units.
Caution During DMA transfer, do not perform writing to these registers.
0
Address
FFFFF1F0H
After reset
0000H
1
TTYP
2
TM
0
3
TM
1
4
DAD
0
5
DAD
1
6
SAD
0
7
SAD
1
8
DS
9
10
0
11
0
12
0
13
0
14
0
15
0
DADC0
FFFFF1F2H
0000H
TTYP
TM
0
TM
1
DAD
0
DAD
1
SAD
0
SAD
1
DS
0
0
0
0
0
0
DADC1
FFFFF1F4H
0000H
TTYP
TM
0
TM
1
DAD
0
DAD
1
SAD
0
SAD
1
DS
0
0
0
0
0
0
DADC2
FFFFF1F6H
0000H
TTYP
TDIR
TDIR
TDIR
TDIR
TM
0
TM
1
DAD
0
DAD
1
SAD
0
SAD
1
DS
0
0
0
0
0
0
0
0
0
0
DADC3
Bit Position
Bit Name
Function
8
DS
Data Size
Sets the transfer data size for DMA transfer.
0: 8 bits
1: 16 bits
Source Address count Direction
Sets the count direction of the source address for DMA channel n.
SAD1
SAD0
Count Direction
0
0
Increment
0
1
Decrement
1
0
Fixed
1
1
Setting prohibited
7, 6
SAD1,
SAD0
Remark
n = 0 to 3
Содержание V850E/MS1 UPD703100
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