Dma control register – Digi NS9215 User Manual
Page 347
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E X T E R N A L D M A
DMA Control register
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347
Register
Register bit
assignment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D M A C o n t r o l r e g i s t e r
Address: A080_0004, A080_0014
The DMA Control register contains the required DMA transfer control information. The
external DMA module has two of these registers.
Register
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
BuffDesc
BuffDesc
Bit(s)
Access
Mnemonic
Reset
Description
D31:00
R/W
BuffDesc
0x0000_0000
32-bit pointer to a buffer descriptor
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
INDEX
CE
CA
CG
SW
DW
SB
DB
SINC_N SINC_N
STATE
RST
MODE
POL
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