I have to say I don't know details of your design, but there is possibility of overclocking, as described in datasheet of avalon chip. (And discussed in other avalon-clone threads like this).
Did you think about possibility of supply voltage/clk frequency tweaking?
And second note, please think about 28(-35)GHs variant, I mean 10 avalon modules shield. You always can use 3 modules only, but benefits of modularity are known ;-)
If I can provide you any help, feel free to ask.
Ramirez
Hi , in my design is definitely posssible change voltage for cores by replacing one resistor on the power board.
I dont know the internal structure of Avalon, so I dont know whether external clock is used only for cores or also for internal logic.
Tweaked oscillator frequency could cause data corruption.
I do not know the price of Arduino DUE board?
I am from China.
If I can do something, pm me.
Thanks
Hi, unfortunately at the moment this project is financing only by me. Evilscoop promised me 1 avalon, so I'm waiting for it. This week I will have electronics parts and pcb for the first prototipe.