SH7280 Datasheet, PDF (437/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 10 Direct Memory Access Controller (DMAC)
10.3.9 DMA Extension Resource Selectors 0 to 3 (DMARS0 to DMARS3)
The DMA extension resource selectors (DMARS) are 16-bit readable/writable registers that
specify the DMA transfer sources from peripheral modules in each channel. DMARS0 is for
channels 0 and 1, DMARS1 is for channels 2 and 3, DMARS2 is for channels 4 and 5, and
DMARS3 is for channels 6 and 7. Table 10.4 shows the specifiable combinations.
DMARS can specify transfer requests from two USB sources, one RCAN source, two SSU
sources, two SCIF sources, two IIC3 sources, one A/D converter source, five MTU2 sources, and
two CMT sources.
DMARS is initialized to H'0000 by a reset and retains the value in software standby mode and
module standby mode.
• DMARS0
Bit:
Initial value:
R/W:
15
0
R/W
14
0
R/W
13 12
CH1 MID[5:0]
0
0
R/W R/W
11
0
R/W
10
0
R/W
9
8
CH1 RID[1:0]
0
0
R/W R/W
7
0
R/W
6
0
R/W
5
4
3
CH0 MID[5:0]
0
0
0
R/W R/W R/W
2
0
R/W
1
0
CH0 RID[1:0]
0
0
R/W R/W
• DMARS1
Bit:
Initial value:
R/W:
15
0
R/W
14
0
R/W
13 12
CH3 MID[5:0]
0
0
R/W R/W
11
0
R/W
10
0
R/W
9
8
CH3 RID[1:0]
0
0
R/W R/W
7
0
R/W
6
0
R/W
5
4
3
CH2 MID[5:0]
0
0
0
R/W R/W R/W
2
0
R/W
1
0
CH2 RID[1:0]
0
0
R/W R/W
• DMARS2
Bit:
Initial value:
R/W:
15
0
R/W
14
0
R/W
13 12
CH5 MID[5:0]
0
0
R/W R/W
11
0
R/W
10
0
R/W
9
8
CH5 RID[1:0]
0
0
R/W R/W
7
0
R/W
6
0
R/W
5
4
3
CH4 MID[5:0]
0
0
0
R/W R/W R/W
2
0
R/W
1
0
CH4 RID[1:0]
0
0
R/W R/W
• DMARS3
Bit:
Initial value:
R/W:
15
0
R/W
14
0
R/W
13 12
CH7 MID[5:0]
0
0
R/W R/W
11
0
R/W
10
0
R/W
9
8
CH7 RID[1:0]
0
0
R/W R/W
7
0
R/W
6
0
R/W
5
4
3
CH6 MID[5:0]
0
0
0
R/W R/W R/W
2
0
R/W
1
0
CH6 RID[1:0]
0
0
R/W R/W
Rev. 1.00 Jun. 26, 2008 Page 407 of 1692
REJ09B0393-0100