topic Boot Contact Pins in i.MX Processors

Boot Contact Pins

DaviddeBethel — Fri, 15 Jul 2011 07:47:54 GMT

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

Re: Boot Contact Pins

Frias — Fri, 15 Jul 2011 20:10:27 GMT

Hello David,

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

Best Regards,

Renato Frias

Re: Boot Contact Pins

OmarPighi — Wed, 02 Nov 2011 10:19:02 GMT

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