We are develop a USB HUB. We tested our RTL in FPGA and using ULPI PHY, TUSB1310A(USB3_HT3 made by E-ELEMENTS) with HAPS DX7 board.
But we found high-speed detection handshake is not successful. When USB device send TX CMD (84 45) and TX CMD (84 06) to ULPI PHY to let it to send Chirp K,
then, USB device waits for Chirp K/J/K/J/K/J from usb host, but there is no Chirp K/J/K/J/K/J received.
Do you have any suggestion for my question?
The internal signal is shown as following figure
