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Cmsemicon CMS32L051 - DMA Source Address Register J(Dmsarj) (J=0~23); DMA Destination Address Register J(Dmdarj) (J=0~23)

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V1.2.2
CMS32L051 User Manual |Chapter 16 Enhanced DMA
www.mcu.com.cn 588 / 703
16.3.9 DMA source address register j(DMSARj) (j=0~23).
This register specifies the source address at which data is transferred.
When the SZ bit of the DMACRj register is 01 (16 bits transferred), the lowest bit is ignored and
processed as an even address.
When the SZ bit of the DMACRj register is 10 (32-bit transfer), the lower 2 bits are ignored and
processed as a word address.
Figure 16-10 Format of DMA source address register j (DMSARj)
Address:
Refer to 16.3.2
Control data allocation
.
After reset: Indefinite value
R/W
symbol
31
30
29
28
27
26
25
24
DMSARj
DMSARj31
DMSARj30
DMSARj29
DMSARj28
DMSARj27
DMSARj26
DMSARj25
DMSARj24
23
22
21
20
19
18
17
16
DMSARj23
DMSARj22
DMSARj21
DMSARj20
DMSARj19
DMSARj18
DMSARj17
DMSARj16
15
14
13
12
11
10
9
8
DMSARj15
DMSARj14
DMSARj13
DMSARj12
DMSARj11
DMSARj10
DMSARj9
DMSARj8
7
6
5
4
3
2
1
0
DMSARj7
DMSARj6
DMSARj5
DMSARj4
DMSARj3
DMSARj2
DMSARj1
DMSARj0
Note 1 The DMSARj register cannot be accessed via DMA transfer.
16.3.10 DMA destination address register j(DMDARj) (j=0~23).
This register specifies the destination address at which data is transferred.
When the SZ bit of the DMACRj register is 01 (16 bits transferred), the lowest bit is ignored and
processed as an even address.
When the SZ bit of the DMACRj register is 10 (32-bit transfer), the lower 2 bits are ignored and
processed as a word address.
Figure 16-11 format of the DMA destination address register j (DMDARj).
Address:
Refer to 16.3.2
Control data allocation
.
After reset: Indefinite value
R/W
symbol
31
30
29
28
27
26
25
24
DMDARj
DMDARj31
DMDARj30
DMDARj29
DMDARj28
DMDARj27
DMDARj26
DMDARj25
DMDARj24
23
22
21
20
19
18
17
16
DMDARj23
DMDARj22
DMDARj21
DMDARj20
DMDARj19
DMDARj18
DMDARj17
DMDARj16
15
14
13
12
11
10
9
8
DMDARj15
DMDARj14
DMDARj13
DMDARj12
DMDARj11
DMDARj10
DMDARj9
DMDARj8
7
6
5
4
3
2
1
0
DMDARj7
DMDARj6
DMDARj5
DMDARj4
DMDARj3
DMDARj2
DMDARj1
DMDARj0
Note: DMDARj registers cannot be accessed via DMA transfer.

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