Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual page 196

Bit Name
5
7
9
10
11
12
13
14
15
15 BYTESWAP
For word and half-word transfers, setting this bit will swap all bytes of each word or half-word.
14:4 XFERCNT
Specifies number of unit data (words, half-words, or bytes) to transfer, as determined by the SIZE field. The value written
should be one less than the desired transfer count.
3 STRUCTREQ
When a linked descriptor is loaded with this bit set, it will immediately trigger a transfer.
2 Reserved
1:0 STRUCTTYPE
Value
0
1
2
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Reset Access Description
UNIT8 Eight unit transfers per arbitration
UNIT16 Sixteen unit transfers per arbitration
UNIT32 32 unit transfers per arbitration
UNIT64 64 unit transfers per arbitration
UNIT128 128 unit transfers per arbitration
UNIT256 256 unit transfers per arbitration
UNIT512 512 unit transfers per arbitration
UNIT1024 1024 unit transfers per arbitration
ALL Transfer all units as specified by the XFRCNT field
0 RWH Endian Byte Swap
0x000 RWH DMA Unit Data Transfer Count
0 W1 Structure DMA Transfer Request
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0x0 R DMA Structure Type
Mode Description
TRANSFER DMA transfer structure type selected.
SYNCHRONIZE Synchronization structure type selected.
WRITE Write immediate value structure type selected.
Reference Manual
LDMA - Linked DMA Controller
1.2 Conven-
Rev. 1.1 | 196