Just a quick status update:

Bringing a prototype like that takes its time, thank you all for your patience.
I verified most of the functions now, and there were some changes that will find their way into the next revision
Hit some problems with the quarz clocking the micro, it would not always start to resonate, so I changed it to an Oscillator.

Power supplies - all working as expected
ASIC Upstream - working, stable
ASIC downstream - unstable, investigating
USB Connection - working
core voltage adjustment - working
CAN-BUS - in development
Temperature/Voltage sensing - in development

I had it hashing for a bit but the return interface for the nonce  is not working stable at the moment. (about 10% HW errors)
I know whats causing the issues, have to change a part to get rid of them. (in the mail for Tuesday)
Power consumption at 5.1Ghash - ~36Watts