boot strapping timing

[inmaku]

What is the Timing relation ship between sampling the i.MX6 GPIOs for boot strapping and the POR_B Signal? What are teh Setup/hold requirements?

Thanks,

Ingo

[Yuri]

The boot mode pins are read at 300us to 1ms after reset is deasserted,

therefore if buffers are used to isolate the boot pins, they should be

enabled for 1-10 ms after reset negation.

Have a great day,
Yuri

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[inmaku]

Hi Yuri,

Thanks - that is what I needed. Can I find this Information in the reference Manual or data sheet?

Thanks,

Ingo

[Yuri · Accepted solution]

I am afraid - no, this information is not provided in documentation.

[inmaku]

After your posting I did remember one reference design making this statement: The MCIMX6SLEVK board has this note on page 13.

With this  - I guess - I have to take the word on it.

Thanks!