> On Feb 22, 2017, at 10:58 PM, Heinz Hummel <[email protected]> wrote: > > > > 2017-02-23 7:55 GMT+01:00 John Syne <[email protected] > <mailto:[email protected]>>: > > Well, at some point they are always connected. What you want is for them to > connect only at one point and that point should be closest to the power > source. Think of a star connection, with the center of the star as the > reference ground point. What you don’t what is digital signals flowing > through the analog ground and that occurs when you connect AGND to DGND at > more than one point. > > So when I understand this correctly: in layout of a board they should be > connected with each other as close as possible to the BBB/BBG expansion > header connector? As close as possible to the power source GND. So if you intend to use the barrel connector to power the board, the GND and AGND should connect at the barrel connector GND pin, or if you use the expansion connector to power the board, then connect GND and AGND at a single GND pin on the expansion connector. I does not matter that several GND pins are connected to the GND plane. I hope this helps.
Regards, John > > -- > For more options, visit http://beagleboard.org/discuss > <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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CAHptrU4FnKZHP%3D%3DYbpjtddF1jmfRNOvWgPGUyw_MG2JntpJGFA%40mail.gmail.com > > <https://groups.google.com/d/msgid/beagleboard/CAHptrU4FnKZHP%3D%3DYbpjtddF1jmfRNOvWgPGUyw_MG2JntpJGFA%40mail.gmail.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <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/E32D58CB-DFA6-4A84-8291-4323E6E7316D%40gmail.com. For more options, visit https://groups.google.com/d/optout.
