Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet

 1079

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

 DMACON

0x0050001C

 Read-write

 0x00000000

0: DMA is disabled.

1: DMA is enabled.

0: No effect.

1: Reset DMA module. DMA Module should be reset only when disabled and in idle state.

0: DMA module is idle.

1: DMA module is busy (doing a transaction on the AHB bus).

0: No effect

1: Update DMA Configuration

. 

Used for simultaneous updating of DMA parameters in dual scan mode or when using 2D

addressing. The values written in the registers DMABADDR1, DMABADDR2 and DMA2DCFG, and in the field FRMSIZE of
register DMAFRMCFG, are accepted by the DMA controller and are applied at the next frame. This bit is used only if a dual
scan configuration is selected (bit SCANMOD of LCDCON2 register) or 2D addressing is enabled (bit DMA2DEN in this
register). Otherwise, the LCD controller accepts immediately the values written in the registers referred to above.

0: 2D addressing is disabled (values in register DMA2DCFG are “don’t care”).

1: 2D addressing is enabled.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

–

–

–

DMA2DEN

DMAUPDT

DMABUSY

DMARST

DMAEN