Register Description
www.ti.com
130
SWRU543–January 2019
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
Direct Memory Access (DMA)
4.3.3.3 DMA_CHCTL Register (offset = 8h) [reset = 0h]
DMA_CHCTL is shown in Figure 4-6 and described in Table 4-9.
Figure 4-6. DMA_CHCTL Register
31 30 29 28 27 26 25 24
DSTINC DSTSIZE SRCINC SRCSIZE
R/W-0h R/W-0h R/W-0h R/W-0h
23 22 21 20 19 18 17 16
RESERVED ARBSIZE
R-0h R/W-0h
15 14 13 12 11 10 9 8
ARBSIZE XFERSIZE
R/W-0h R/W-0h
7 6 5 4 3 2 1 0
XFERSIZE NXTUSEBURST XFERMODE
R/W-0h R/W-0h R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 4-9. DMA_CHCTL Register Field Descriptions
Bit Field Type Reset Description
31-30 DSTINC R/W 0h Destination Address Increment. This field configures the destination
address increment.
The address increment value must be equal or greater than the
value of the destination size (DSTSIZE)
0h = Increment by 8-bit location
1h = Half word Increment by 16-bit location
2h = Word Increment by 32-bit location
3h = No increment Address remains set to the value of the
Destination Address End Pointer (DMADSTENDP) for the channel
29-28 DSTSIZE R/W 0h Destination Data Size. This field configures the destination item data
size.
Note: DSTSIZE must be the same as SRCSIZE
0h = Increment by 8-bit location
1h = Half word Increment by 16-bit location
2h = Word Increment by 32-bit location
3h = No increment Address remains set to the value of the
Destination Address End Pointer (DMADSTENDP) for the channel
27-26 SRCINC R/W 0h Source Address Increment. This field configures the destination
address increment.
The address increment value must be equal or greater than the
value of the source size (SRCSIZE)
0h = Increment by 8-bit location
1h = Half word Increment by 16-bit location
2h = Word Increment by 32-bit location
3h = No increment Address remains set to the value of the source
Address End Pointer (DMADSTENDP) for the channel
25-24 SRCSIZE R/W 0h Source Data Size. This field configures the source item data size.
Note: DSTSIZE must be the same as SRCSIZE
0h = Increment by 8-bit location
1h = Half word Increment by 16-bit location
2h = Word Increment by 32-bit location
3h = No increment Address remains set to the value of the
Destination Address End Pointer (DMADSTENDP) for the channel
23-18 RESERVED R 0h
To Next Page
Loading...
