Hi,
One year ago, I designed a board includes TUSB9261. USB2 and USB3 work fine on that board. Then, I used this design on another board, exactly same. But I couldn't manage to work USB3 on new board. It works fine with USB2. How can debug TUSB9261 to find the problem?
USB connector pinout, power supplies, reset circuit are same with old design. In new board USB traces have 90ohm impedance and they are matched.
If anyone want to review schematic, here is.
(R37 and R39 don't populated, it works with 20Mhz)
Thank you.
