Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Datenbogen
Produktcode
AT91SAM9X25-EK
69
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
12.4.1 Boot Sequence Configuration Register
Name:
BSC_CR
Address:
0xFFFFFE54
Access:
Read-write
Factory Value:
0x0000_0000
• BOOT: Boot Media Sequence
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.
Please refer to the “NVM Boot Sequence” section of this datasheet for details on BOOT value.
• BOOTKEY
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