Could be. That issue we have not seen. The one we did see was addressed by the capacitor change. I will look at this for a later revision, assuming we can duplicate it. But it won't be in the next revision for sure.
Gerald On Fri, Dec 20, 2013 at 10:26 AM, <[email protected]> wrote: > Thanks Gerald. > > You changed C24 to a 2.2uF capacitor to improve the reset signal but we > don't think that fix the issue. > We made some measurements around UART0 and we are convinced that u-boot > detects spurious data during start up. Find below 2 ocilloscope screenshots > (CH1 : PIN 3-J1 B_UART0_TX, CH2 : PIN 4-J1 B_UART0_RX). > http://hpics.li/9d7742f > http://hpics.li/956957a > RX signal looks noisy when TX signal changes. Maybe a coupling issue? > > Regards, > > Ludovic > > -- > 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.
