I've designed a PCB which contains FT2232H for UART and SWD debugging for a microcontroller in the PCB (STM32L0). The FT2232H circuit looks like this:
When I connecting the board to the USB port in my PC all the 3 LEDs (D3, D4, D5) are light up, it means that the power rails are OK (VBUS - 5V, 3.3, 3V) but, then I don't see any message from windows about new USB device detection. nothing happens. the system doesn't detect device insertion or removal. I have designed the FT2232H circuit above according to the datasheet(page 69 Bus-Powered Configuration), and this reference design
Do you have any suggestions on how to debug or to solve my problem?
Thank you very much!