About the Auto-Power-On Support in 'Jetson_TX2_OEM_Product_DesignGuide'

I have problems about Auto-Power-On Support in ‘Jetson_TX2_OEM_Product_DesignGuide’.

I cannot the operational principle about the Discrete Circuit to control the auto power on for TX2.(capacity charge and discharge to cause CHARGER_PRSNT to groud for a while ?)
2,In the  'Jetson_TX2_OEM_Product_DesignGuide' about 3.7 Optional Auto-Power-On Support, it says TX2 has the 'Built-in Auto-Power-On circuit',as it says, in my design board, i direct connnect the pin A49 CHARGER_PRSNT# to groud to realize the 'Auto-Power-On'
  1. RC circuit is used to control the time of CHARGER_PRSNT to ground so as to power on system accordingly.
  2. It is OK to connect A49 to ground to implement auto power on.

Thanks for the answer, and I get it.Thanks again


How to find pin A49 on the board? What kind of a connector is used?

The original post seems to be related to building a custom carrier (that big connector where the module seats on the carrier is where this is). A49 isn’t accessible unless you are designing your own carrier board.