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R01UH0336EJ0102 Rev.1.02
Page 225 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 5 DMA Module
5.5.18
DTCTn (n = 0 to 7): DMA Transfer Control Register
This 16-bit register sets transfer data size and direction (up or down) for
counting of addresses.
Access
This register is readable/writable in 16-bit units.
Address
DTCT7: FFFF 7488
H
, DTCT6: FFFF 7458
H
, DTCT5: FFFF 7428
H
,
DTCT4: FFFF 73F8
H
, DTCT3: FFFF 73C8
H
, DTCT2: FFFF 7398
H
,
DTCT1: FFFF 7368
H
, DTCT0: FFFF 7338
H
Initial value
0000
H
This register is initialized by a reset from any source.
15
14
13
12
11
10
9
8
0
DTCTnDS1 DTCTnDS0
DTCTn
MLE
0
0
0
0
R
R/W
R/W
R/W
R
R
R
R
7
6
5
4
3
2
1
0
DTCTn
SACM1
DTCTn
SACM0
DTCTn
DACM1
DTCTn
DACM0
0
0
0
0
R/W
R/W
R/W
R/W
R
R
R
R
Bit Position
Bit Name
Function
14
13
DTCTnDS1
DTCTnDS0
DMA transfer data size
These bits specify the DMA transfer data size of channel n.
12
DTCTnMLE
Multi-link enable
This bit specifies whether to acknowledge the next DMA transfer request
without clearing the DTSnTC bit (to 0) after DMA transfer has been completed.
If this bit is set (to 1), the DTSnDTE bit is not cleared upon completion of DMA
transfer.
Even if the DTSnTC bit is not cleared, DMA transfer is executed if a DMA
transfer request is issued.
0: The DTSnDTE bit is cleared upon completion of DMA transfer.
1: The DTSnDTE bit is not cleared upon completion of DMA transfer.
DTCTnDS1
DTCTnDS0
Transfer Data Size
0
0
8 bits
0
1
16 bits
1
0
32 bits
1
1
128 bits