SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 385

• Manufacturer Part Number: SAM3A4C
• Manufacturer: Atmel Corporation

23.7.16
Name:
Address:
Access:
Reset:
This register can only be written if the WPEN bit is cleared in
• BTSIZE: Buffer Transfer Size
The transfer size relates to the number of transfers to be performed, that is, for writes it refers to the number of source
width transfers to perform when DMAC is flow controller. For Reads, BTSIZE refers to the number of transfers completed
on the Source Interface. When this field is set to 0, the DMAC module is automatically disabled when the relevant channel
is enabled.
• SCSIZE: Source Chunk Transfer Size.
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
DONE
31
23
15
–
7
DMAC Channel x [x = 0..5] Control A Register
Value
000
001
010
011
100
101
110
111
DMAC_CTRLAx [x = 0..5]
0x400C4048 [0], 0x400C4070 [1], 0x400C4098 [2], 0x400C40C0 [3], 0x400C40E8 [4], 0x400C4110 [5]
Read-write
0x00000000
30
22
14
–
6
DCSIZE
29
21
13
5
DST_WIDTH
CHK_128
CHK_256
CHK_16
CHK_32
CHK_64
CHK_1
CHK_4
CHK_8
Name
28
20
12
4
BTSIZE
BTSIZE
“DMAC Write Protect Mode Register” on page 391
27
19
11
–
–
3
128 data transferred
256 data transferred
16 data transferred
32 data transferred
64 data transferred
1 data transferred
4 data transferred
8 data transferred
Description
26
18
10
–
2
SCSIZE
25
17
9
1
SRC_WIDTH
SAM3X/A
SAM3X/A
24
16
8
0
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