You might try reading the datasheet for the AM3358 MCU. http://www.ti.com/product/AM3358
Gerald On Wed, Apr 6, 2016 at 4:38 PM, <[email protected]> wrote: > > On the BeagleBone Black GPIOs, what is the difference between output > pull-up, output pull-down, and output no pull? > > > In other MCUs I have worked with, pull-up and pull-down are only applied > to inputs. But I have found nothing to specifically say that is the case > with the Beaglebone, and some of the references “seem” to indicate that > outputs can be configured as pull-up or pull-down. > > > If the BBB outputs can be configured for pull-up, pull-down and no pull, > then when configured for output pull-up, does that mean that when the port > is enabled (turned on) it will source approximately 3v at up to 4 mA? If > so, then when the port is off, is it in an indeterminate state and need to > be pulled down externally? > > > Or, does it mean that the default setting for the port is pulled high with > minimal current available and that when the port is enabled it will go low > and sink around 4-6 mA? > > > Also, what voltage and current should I expect when the output is set to > no pull up or down? > > > Or, are pull-up and pull-down not options in the output configuration? Is > there any place that specifically says so that I missed (or is this one of > those things that one should be smart enough to know already)? > > > Thank you. > > > > -- > 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. > -- 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]. For more options, visit https://groups.google.com/d/optout.
