Renesas R5S72621 Manual De Usuario
Section 10 Direct Memory Access Controller
Page 396 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
10.3.5
DMA Reload Source Address Registers (RSAR)
The DMA reload source address registers (RSAR) are 32-bit readable/writable registers.
When the SAR reload function is enabled, the RSAR value is written to the source address register
(SAR) at the end of the current DMA transfer. In this case, a new value for the next DMA transfer
can be preset in RSAR during the current DMA transfer. When the SAR reload function is
disabled, RSAR is ignored.
(SAR) at the end of the current DMA transfer. In this case, a new value for the next DMA transfer
can be preset in RSAR during the current DMA transfer. When the SAR reload function is
disabled, RSAR is ignored.
To transfer data in word (2-byte), longword (4-byte), or 16-byte unit, specify the address with 2-
byte, 4-byte, or16-byte address boundary respectively.
byte, 4-byte, or16-byte address boundary respectively.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
10.3.6
DMA Reload Destination Address Registers (RDAR)
The DMA reload destination address registers (RDAR) are 32-bit readable/writable registers.
When the DAR reload function is enabled, the RDAR value is written to the destination address
register (DAR) at the end of the current DMA transfer. In this case, a new value for the next DMA
transfer can be preset in RDAR during the current DMA transfer. When the DAR reload function
is disabled, RDAR is ignored.
register (DAR) at the end of the current DMA transfer. In this case, a new value for the next DMA
transfer can be preset in RDAR during the current DMA transfer. When the DAR reload function
is disabled, RDAR is ignored.
To transfer data in word (2-byte), longword (4-byte), or 16-byte unit, specify the address with 2-
byte, 4-byte, or16-byte address boundary respectively.
byte, 4-byte, or16-byte address boundary respectively.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-