Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet

476

SAM9G25 [DATASHEET]

11032D–ATARM–10-Mar-2014

DDRSDRC_MD

0xFFFFE820

Read-write

See 

This register can only be written if the bit WPEN is cleared in 

.

Indicates the type of memory used.

Reset value is for SDR-SDRAM device.

000 = SDR-SDRAM

001 = Low-power SDR-SDRAM 

010 = Reserved

011 = Low-power DDR1-SDRAM

110 = DDR2-SDRAM

Reset value is 16 bits.

0 = Data bus width is 32 bits (reserved for SDR-SDRAM device).

1 = Data bus width is 16 bits.

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

–

–

–

DBW

–

MD