Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Data Sheet

69

SAM9X25 [DATASHEET]

11054E–ATARM–10-Mar-2014

BSC_CR

0xFFFFFE54

Read-write

0x0000_0000

This value is defined in the product-dependent ROM code. It is only written if BOOTKEY carries the valid value.
Please refer to the “NVM Boot Sequence” section of this datasheet for details on BOOT value.

0x6683 (BSC_KEY): Valid key to write the BSC_CR register; it needs to be written at the same time as the BOOT field.

Other values disable the write access. This key field is write-only. 

31

30

29

28

27

26

25

24

BOOTKEY

23

22

21

20

19

18

17

16

BOOTKEY

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

BOOT