I'm a new hardware design engineer. I have a few questions about high speed pcb design.
1) when I search high speed pcb design, I saw pcb routing like snake. What is this ?
2) When I draw a high speed way (like can-bus line), I used differential pair. Can ı use with only differential pair at all high speed line ? Or Should I do different things ? Like lenght matching.
3) How many MHZ after a line being high speed line?