Sounds like "cheap insurance" to me . . . On Fri, May 20, 2016 at 5:28 PM, Gerald Coley <[email protected]> wrote:
> When you have the FTDI cable plugged in and you power of the BBB, it > tries to power the processor through those pins. The result is a blown > processor. The 241 provide isolation. If you are careful and you never have > the FTDI cable plugged in when you power off the board, you do not need it. > > This is all described in the SRM. > > Gerald > > > On Fri, May 20, 2016 at 4:19 PM, <[email protected]> wrote: > >> >> hello >> I am building my own am3358 based board >> and i have a question on the uart0 in the schematic of the BBB >> why do we need a SN74LVC2G241? >> why dont connect directly to the header? >> why a pull down resistor if uart0_rx and uart0_tx has already a internal >> pull up resistor? >> >> Thanks in advance. >> >> -- >> 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]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/1d5905e9-9609-48fb-aca9-bab0051e3b5b%40googlegroups.com >> <https://groups.google.com/d/msgid/beagleboard/1d5905e9-9609-48fb-aca9-bab0051e3b5b%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Gerald > > [email protected] > http://beagleboard.org/ > [email protected] > > -- > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CAHK_S%2Bfa7ASXALZTQt-HEtzYV9U21ZuHFBC7oZZpqLwhZy5i2Q%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CAHK_S%2Bfa7ASXALZTQt-HEtzYV9U21ZuHFBC7oZZpqLwhZy5i2Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORq7FVsHFK3qgRds%2BP0Wntx%2Bn_vYy3QCGPHmc1qEanoR5A%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
