Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Fiche De Données

99

SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

The Galois field tables are mapped in the ROM just after the ROM code, as described in 

 below:

For a full description and an example of how to use the PMECC detection and correction feature, refer to the software
package dedicated to this device on Atmel’s web site.

The SD Card bootloader uses MCI0. It looks for a “

boot.bin

” file in the root directory of a FAT12/16/32 formatted SD

Card.

Supported SD Card Devices

SD Card Boot supports all SD Card memories compliant with SD Memory Card Specification V2.0. This includes SDHC
cards.

Two kinds of SPI Flash are supported: SPI Serial Flash and SPI DataFlash

®

.

The SPI Flash bootloader tries to boot on SPI0 Chip Select 0, first looking for SPI Serial Flash, and then for SPI
DataFlash.

It uses only one valid code detection: analysis of ARM exception vectors.

The SPI Flash read is done by means of a Continuous Read command from address 0x0. This command is 0xE8 for
DataFlash and 0x0B for Serial Flash devices.

ROM Code

0x0010_8000

0x0010_0000

Galois field

tables for 

1024-byte 

sectors

correction

Galois field

tables for 

512-byte 

sectors

correction

0x0011_0000