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Timing for Boot mode configuration pins

Question asked by Boris Berman on May 8, 2018
Latest reply on May 9, 2018 by igorpadykov

Hello,

In our new project with iMX8, part of the boot mode configuration pins (BOOT_MODE0/1, SAI1_TXD1, SAI1_TXD4, and SAI1_TXD5) will be changed during active reset (I mean when POR_B input us low), but before rising edge of the POR_B it's will get the necessary value.

 

According to reference manual of iMX8 for BOOT_MODE0 and BOOT_MODE1, it's OK

Paragraph "6.1.2.1 Boot mode pin settings": The BOOT_MODE is initialized by sampling the BOOT_MODE0 and BOOT_MODE1 inputs on the rising edge of the POR_B.

 

Is this rule valid for other boot configuration pins also?

Thank You,

Boris

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