Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK 数据表
产品代码
AT91SAM9N12-EK
90
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
12.2.4 NVM
Boot
12.2.4.1 NVM Boot Sequence
The boot sequence on external memory devices can be controlled using the Boot Sequence Register (BSCR). The 3
LSBs of the BSCR are available to control the sequence.
LSBs of the BSCR are available to control the sequence.
The user can then choose to bypass some steps shown in
according
to the BSCR Value.
Table 12-2. Boot Sequence Register Values
BSCR Value
SPI0 NPCS0
SDCard
NAND
Flash
SPI0 NPCS1
TWI EEPROM
SAM-BA
Monitor
0
Y
Y
Y
Y
Y
Y
1
Y
-
Y
Y
Y
Y
2
Y
-
-
Y
Y
Y
3
Y
-
-
Y
Y
Y
4
Y
-
-
-
Y
Y
5
-
-
-
-
-
Y
6
-
-
-
-
-
Y
7
-
-
-
-
-
Y