AT91SAM9260 boot from SD Card?

[dariush_abbasi]

Hi,
In the first page of at91sam9260 datasheet,it said that it can be boot from SDcard,but there is no SDCard option in the boot sequence diagram,and also i can't find any other place or any other document for knowing how.
Any suggestion?
By the way,what is the cheapest boot hardware for this chip?
Thanks.

 

[nsingh95]

Hi dariush,
Please provide few more inputs.

 

[dariush_abbasi]

Hi,
What do you mean by inputs?
I found a slide which says that at91sam9260 can't be boot from SDcard,although in the first page of its datasheet there is such option.
Regards,

 

[noureddine1]

take a look to section 8.1.1.1 in data sheet it explain steps to boot from SD Card by using a boot brogram logged in ROM

8.1.1.1 BMS = 1, Boot on Embedded ROM
The system boots using the Boot Program.
• Boot on slow clock (On-chip RC or 32,768 Hz)
• Auto baudrate detection
• Downloads and runs an application from external storage media into internal SRAM
• Downloaded code size depends on embedded SRAM size
• Automatic detection of valid application
• Bootloader on a non-volatile memory
– SPI DataFlash® connected on NPCS0 and NPCS1 of the SPI0
– 8-bit and/or 16-bit NAND Flash
• SAM-BA® Monitor in case no valid program is detected in external NVM, supporting
– Serial communication on a DBGU
– USB Device Port

 

[noureddine1]

Atmel Products - ARM-based Solutions - AT91SAM9260

 

[dariush_abbasi]

Hi,
Which data sheet are you talking about?
I searched in 6221.pdf(at91sam9260 datasheet),but there is no such a section,and the section 8 is "block diagram"!
Please see the slide 18 of this fileNVM Memory Bootloader Support)
View attachment SAM9_Boot_Strategies.ppt
Best Regards.

 

[dariush_abbasi]

By the way,what is your suggestion for cheapest and easiest way of booting this chip?
I don't want to use operating system yet and i just want to run some simple programs like GPIO,TIMER,etc.
The example from keil uses DATAFLASH together with SDRAM,but i need a sample program to copy the 16K program in dataflash or...to its internal SRAM and run it without any SDram,do you know where can i find such an example?
Thanks a lot.