Is it possible to generate a 20MHz clock on the TinyFPGA BX? I am interested in trying the fpga4fun ultra-minimal ethernet transmitter example at https://www.fpga4fun.com/10BASE-T0.html.
icepll suggests it’s possible to hit 20MHz exactly:
$ icepll -i 16 -o 20 F_PLLIN: 16.000 MHz (given) F_PLLOUT: 20.000 MHz (requested) F_PLLOUT: 20.000 MHz (achieved) FEEDBACK: SIMPLE F_PFD: 16.000 MHz F_VCO: 640.000 MHz DIVR: 0 (4'b0000) DIVF: 39 (7'b0100111) DIVQ: 5 (3'b101) FILTER_RANGE: 1 (3'b001)
That looks like an interesting idea! I’m very keen to hear how you get on.
It’s a level higher up the stack, but I have an arduino ethernet shield with a W5100 chip on it that I was considering hooking up to PicoSoC at some stage. I think your “raw ethernet” idea has a bit more “fun” appeal
You can become a real full stack developer this way! It would be pretty cool to implement a webserver this way.