Do you have any troubleshooting suggestions?
Cheers.
Start by sending the RESET sequence - you should see it also on the OUT pins (as it is being relayed by the chips).
What you use for 0.8 vdd ? I had huge problems with some regs. Everything was fine when mesaure voltages but hole thing was not working at all.
Cheers,
Uhmm ... 0.8V ?
Actually the regulator I'm using is adjustable (from 0.8min) and I've tested with 0.8-0.88V and works pretty nicely.
Also - to get "the whole thing" working you may want to start in small incrementals. First get the voltage levels right, then check that your SPI communication is actually sending and receiving stuff (the easiest test is to do a loopback and see if you receive what you send), then test the RESET sequence - once you see all that working then move to the "getting the whole thing working" phase.
In my case VDD=0.82V, IOREF=VDD, IOVDD=1.8V
Ohh, my "whole thing" is working now i am just sharing information here if i can help somehow.
I am waiting 2nd version pcb's to arrive. I will post some pics here when i finish everything. And i hope that everything will work
I'm glad one of us is having better luck - my rpi ate my CPLD and I seem to have melted the board reworking it
Time to build another and pop it in the toaster oven I think!