r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 640
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r5s77631ay266bgv
Manufacturer Part Number
r5s77631ay266bgv
Description
Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5S77631AY266BGV.pdf
(2026 pages)
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Section 14 Direct Memory Access Controller (DMAC)
14.3.4
DARB is 32-bit readable/writable registers that specify the destination address of a DMA transfer
that is set in DAR again in repeat/reload mode. Data to be written from the CPU to DAR is also
written to DARB. To set DARB address that differs from DAR address, write data to DARB after
DAR.
To transfer data in word or in longword units, specify the address with word or longword address
boundary. When transferring data in 16-byte or in 32-byte units, a 16-byte or 32-byte boundary
must be set for the source address value. The initial value is undefined.
14.3.5
TCR is 32-bit readable/writable registers that specify the DMA transfer count. The number of
transfers is 1 when the setting is H'00000001, 16,777,215 when H'00FFFFFF is set, and
16,777,216 (the maximum) when H'00000000 is set. During a DMA transfer, these registers
indicate the remaining transfer count.
The upper eight bits of TCR are always read as 0, and the write value should always be 0. The
initial value is undefined.
Rev. 1.00 Oct. 01, 2007 Page 574 of 1956
REJ09B0256-0100
Initial value:
Initial value:
Initial value:
Initial value:
R/W:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
Bit:
DMA Destination Address Registers (DARB0 to DARB3)
DMA Transfer Count Registers (TCR0 to TCR5)
R/W
R/W
R/W
R/W
31
—
15
—
31
—
15
—
R/W
R/W
R/W
R/W
30
—
14
—
30
—
14
—
R/W
R/W
R/W
R/W
—
—
29
—
13
—
29
13
R/W
R/W
R/W
R/W
28
—
12
—
28
—
12
—
R/W
R/W
R/W
R/W
27
—
11
—
27
—
11
—
R/W
R/W
R/W
R/W
26
—
10
—
26
—
10
—
R/W
R/W
R/W
R/W
25
—
—
25
—
—
9
9
R/W
R/W
R/W
R/W
24
—
—
24
—
—
8
8
DARB
DARB
TCR
TCR
R/W
R/W
R/W
R/W
23
—
—
23
—
—
7
7
R/W
R/W
R/W
R/W
22
—
—
22
—
—
6
6
R/W
R/W
R/W
R/W
21
—
—
21
—
—
5
5
R/W
R/W
R/W
R/W
20
—
—
20
—
—
4
4
R/W
R/W
R/W
R/W
19
—
—
19
—
—
3
3
R/W
R/W
R/W
R/W
18
—
—
18
—
—
2
2
R/W
R/W
R/W
R/W
17
—
—
17
—
—
1
1
R/W
R/W
R/W
R/W
16
—
—
16
—
—
0
0
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