Not enough current. VDD_3V3AUX comes on at the wrong time in the sequence The 3V3B rail is for extra current.
Gerald . On Fri, Oct 11, 2013 at 5:38 PM, Mike Farrell <[email protected]> wrote: > I did do a search first on this subject and did not come up with anything. > > The BBB the LAN8710 PHY is powered by the VDD_3V3B rail. The VDD_3V3B > rail comes from a LDO sourced by SYS_5V and enabled by the PMCI VDD_3V3AUX. > My questions are: > > 1) Why not power the PHY directly off of the PMIC VDD_3V3AUX? > If OK use a analog switch like TPS27082 to EN power on PHY sequence? > > 2) Is the VDD_3V3B LDO for power-ON-sequence the PHY after the PMIC has > already gone through power sequence? > > tks > > Mike > > > > -- > 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/groups/opt_out. > -- 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/groups/opt_out.
