Basically,no. You need to enable the LDO with 3.3V rail on the expansion header.
Gerald On Thu, Jan 15, 2015 at 2:24 PM, <[email protected]> wrote: > Might also be of interest to others and I wanted a second opinion before > making things more complex - > > Does power from the SYS_5V rail meet timing to drive IO on the > BeagleBone/AM335x? That is - > If I use SYS_5V to drive an always enabled 3.3V LDO, will the output of the > LDO be safe to directly connect to an input GPIO. > > The PMIC datasheet suggests it is not (it is the input to the 3.3V > regulator > on there). Delays in the 3.3V regulator would cause the 3.3V rail to come > up > later then the SYS_5V line. Checking before adding more switching and > sequencing. > > Thanks. > -- > Hunyue Yau > http://www.hy-research.com/ > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Gerald [email protected] http://beagleboard.org/ http://circuitco.com/support/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
