I think 96boards provides schematics for most of their boards, when I get home I’ll look at it but I “think” the differential signaling is done with the FPGA, not external hardware. If that’s the case I would just see if it’s possible to change them to straight I/O pins which is better suited to hm2.
That connector is meant as a high speed board to board interconnect but it’s not something I think really matters for machine control. You want differential signaling to cancel out noise on the wires leaving the board, you don’t need it to data at high speeds. If possible it’s better to program them as straight gpio pins and use external circuits that are tolerant to field voltages to handle differential splitting. Sent from my iPhone > On Aug 27, 2019, at 5:56 AM, Michael Brown <[email protected]> wrote: > > Thinking DExx gpio wise: > > As I'm struggeling to find out exact how fast a datarate the pins on the > Mezzaine connector have, this is just pure speculation, however: > > The mezzanine has 16 differential I/O's (plus some dedicated differential > clock pins), So it might be possible to > create a highspeed serial bus there and route to 2 x 36 parallel GPIO pins > (DExx style) ? > > >> On Tuesday, 27 August 2019 01:01:43 UTC+2, justin White wrote: >> Curious what the current use case for the ultra96 might be. There's >> mezzanines available that are suitable for machine control as far as I'm >> aware. The "high density" "low density" gpio connectors look like a PIA to >> work with. If they stuck that SOC on a form factor similar to the DE10 Nano >> it'd be pretty serious. >> >>> On Monday, August 26, 2019 at 3:15:18 PM UTC-4, Michael Brown wrote: >>> So now have a fully compiled and implemented Ultra96 design, just have to >>> figure out how to test it...(pin file, device tree etc). >>> >>> It would be nice af someone could spin up a 2018.3 Vivado Docker Image... >>> (or input some very verbose instructions as to how) :-) >>> > > -- > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/machinekit/7cd05f66-8917-489b-92a4-8e2d7e2317fc%40googlegroups.com. -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/BEE882D7-84F1-4752-944A-500A0E246F0E%40gmail.com.
