Boot Contact Pins

[DaviddeBethel]

Hi Folks,

Can anybody give me any advice on the best way to set up the boot contact pins on the IMX257?

I wish to know if they all MUST be connected or can I connect the ones corresponding to NAND Flash (which I am using) to high, whilst leaving the non-required pins as no-connect.  I know this is classed as floating and may not be a good idea.

Else, I must use pull down resistors, but I worry that this may affect the use of the peripherals associated with these pins, such as CSPI2.

Any advice would be most gratefully received

ddB

[OmarPighi]

yes this is interesting, but is there any tool to read/blow fuses status for prototipe and production?

[Frias]

Hello David,

Instead of using the external IO you can use the e-fuses to determine how the SoC boots.

Best Regards,

Renato Frias