It appears you haven't copied the layout from the CM4IOUSB3 reference design. The USB pairs should be 90R. The differential pairs need a constant reference plane ( when you change layers you need to couple the reference planes together). The decoupling capacitors need to be as close as possible to each of the power pins on the VL805 and not in a group. Have a look at the CM4IOUSB3 reference design layout for ideas.
Statistics: Posted by dp11 — Tue Jul 23, 2024 4:29 pm