Dmaxda, dma destination address register, Dmaxsz, dma size address register – Texas Instruments MSP430x4xx User Manual
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DMAxDA, DMA Destination Address Register
15
14
13
12
11
10
9
8
DMAxDAx
rw
rw
rw
rw
rw
rw
rw
rw
7
6
5
4
3
2
1
0
DMAxDAx
rw
rw
rw
rw
rw
rw
rw
rw
DMAxDAx
Bits
15−0
DMA destination address. The destination address register points to the
destination address for single transfers or the first address for block transfers.
The DMAxDA register remains unchanged during block and burst-block
transfers.
DMAxSZ, DMA Size Address Register
15
14
13
12
11
10
9
8
DMAxSZx
rw
rw
rw
rw
rw
rw
rw
rw
7
6
5
4
3
2
1
0
DMAxSZx
rw
rw
rw
rw
rw
rw
rw
rw
DMAxSZx
Bits
15−0
DMA size. The DMA size register defines the number of byte/word data per
block transfer. DMAxSZ register decrements with each word or byte transfer.
When DMAxSZ decrements to 0, it is immediately and automatically reloaded
with its previously initialized value.
00000h
Transfer is disabled
00001h
One byte or word is transferred
00002h
Two bytes or words are transferred
:
0FFFFh 65535 bytes or words are transferred