Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet

299

SAM9G25 [DATASHEET]

11032C–ATARM–25-Jan-13

CCFG_EBICSA

Read-write

0x0000_0000

0 = EBI Chip Select 1 is assigned to the Static Memory Controller.

1 = EBI Chip Select 1 is assigned to the DDR2SDR Controller.

0 = EBI Chip Select 3 is only assigned to the Static Memory Controller and EBI_NCS3 behaves as defined by the SMC.

1 = EBI Chip Select 3 is assigned to the Static Memory Controller and the NAND Flash Logic is activated.

0 = EBI D0 - D15 Data Bus bits are internally pulled-up to the VDDIOM power supply.

1 = EBI D0 - D15 Data Bus bits are not internally pulled-up.

0 = EBI D0 - D15 Data Bus bits are internally pulled-down to the ground.

1 = EBI D0 - D15 Data Bus bits are not internally pulled-down.

This allows to avoid overshoots and gives the best performance according to the bus load and external memories.

0 = Low drive (default).

1 = High drive.

0 = NAND Flash I/Os are connected to D0-D15. VDDNF must be equal to VDDIOM (default).

1 = NAND Flash I/Os are connected to D16-D31. VDDNF can be different from or equal to VDDIOM.

This can be used if the SMC connects to the NAND Flash only. Using this function with another device on the SMC will lead to an 
unpredictable behavior of that device. In that case, the  default value must be selected.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

DDR_MP_EN

NFD0_ON_D16

23

22

21

20

19

18

17

16

–

–

–

–

–

–

EBI_DRIVE

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

EBI_DBPDC

EBI_DBPUC

7

6

5

4

3

2

1

0

–

–

–

–

EBI_CS3A

–

EBI_CS1A

–