This is my first attempt at a single-chip schematic. No joke, I was more or less copying the c-scape design for their initial test PCB. Electrically I think this is all correct? I'm going with the same decoupling capacitor values* that were mentioned in a post by intron.



I couldn't figure out how to add a ground pad for the 5GHash chip but in the PCB design phase I'm going to have a copper net  underneath the chip with vias to the ground plane for heatsinking and ground purposes.

I plan on using a 4-pin female molex connector to provide ground/VDD/IOVDD and a 8-pin header for the various I/O pins. After I layout this I'll have a second PCB with dc-dc converters to provide IOVDD and VDD. That same PCB will have the level-shifter to shift the spi signal voltages between the Raspberry Pi and 5GHash voltages.

My goal is to dip my toes into this to see if I enjoy it. So far I do but I haven't had to debug anything yet   I'd like to chain 2 of these together and then build a 2 or 4 chip PCB using the lessons learned from this project.


*- I found a couple very interesting PDFs on calculating the decoupling capacitance and the resulting inductance. Still educating myself on this so I decided to go with values that have been proven to work.