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GPO states during startup

Question asked by JeffGoos on Jul 14, 2014
Latest reply on Jul 14, 2014 by JeffGoos

I plan on using the 4 GPOs as Vcc enables to PFETs to my 4 PAs.  Each PA can draw huge current (>1A) if turned on when not wanted.  I plan to have the GPOs go logic high when in a TDD TX mode and off at "all other times".  All other times means RX, Sleep, Wait, Alert, and during power up as the AD9361 is being programed.

 

Can you tell me how the GPOs behave during power up and if you see any problems with an unwanted GPO high state?  I know some logic controllers will power up their GPOs logic high until programed, which would be a bad thing for me.

 

Thanks.

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