Hi, I am sorry for late answer, but good news :) it works. I don't know why but it works. I tried with another 5V supply, everything is working now.
I have applied 8V power to USB mini (P4), it stayed there less than a minute, I removed it as soon as possible after I realized. I then connected another 5V supply, blue power LED remained 100ms or 200ms on and then off. Therefore I have thought that it was damaged. Next day I tried another 5V supply and it works. Most probably the first 5V supply didn't give enough current to boot up. 2015-07-22 18:20 GMT+02:00 Dennis Cote <[email protected]>: > > > On Saturday, July 18, 2015 at 6:27:12 PM UTC-6, Gerald wrote: >> >> As written in the manual the 5V switch for the USB host port power will >> not. The board will be damaged. >> >> > Gerald, > > The OP said he applied the 8V to the "USB mini" connector. I take that to > mean P4, rather than the USB host port on P3. > > P4 does not have a USB power switch. It only connects to the ESD clamp > U10, the PMIC USB input, and the SOC USB0_VBUS pins. > > The ESD clamp can safely handle the 8V input. The PMIC may be able to > handle the 8V input, though it is greater than the recommended operating > range max of 5.8V, since it is less that the absolute max of 20 V. However, > the AM335x has a absolute max rating of only 5.25 V, so it is quite > probably damaged. > > Dennis Cote > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/UPMEFoKjElg/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- 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.
