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SABRE Board Power Button & Diode

Question asked by Stephen Barton on May 25, 2017
Latest reply on May 25, 2017 by gusarambula

The SABRE Board schematic Rev. C5 Sheet 19 shows a diode D4 is connected from the Power Button SW1 to the PWR_BTN_SNS net that goes to EIM_D29 on the iMX6.  Can anyone say:

 

* What is the purpose of this diode connection?

* Is EIM_D29 configured as a GPIO input with a pull-up resistor?

 

The QWKS board schematic  Rev. C shows a similar diode D2 to EIM_A25.

- Thanks

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