On 1/15/2019 10:30 AM, Mala Dies wrote: > Hello, > > I am looking to find out about the input signal from the BBB. If I am using > GPIO, what is the input signal? Is it GPIO or is it CMOS? I have done > little research and I am looking for some basics on answers. > > ... > > I was dealing w/ DigiKey and they wanted me to know the input signal. I > thought it was as easy as 3.3v to 5.0v shifting.
Most of the inputs on the BBB are GPIO (General Purpose Input Output). Most of the pins also have other functions (eg: timer input, UART, etc) which can be selected via pin multiplexing. Some of the pins are not digital at all (eg: Analog ADC inputs). The I/O voltage varies, but is typically 3.3V for the digital I/O pins and 1.8V for the analog inputs, with a few "oddball" pins (eg: the real-time clock crystal pins, USB pins, etc). *ALL* of the inputs are CMOS, the AM3358 is a CMOS chip. > Seth > > P.S. I will keep up the research and I am currently searching online. I > will look through my SRM too. The I/O specifications are not in the TRM, they are in the data sheet for the specific part: http://www.ti.com/product/AM3358 -- Charles Steinkuehler [email protected] -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
