The RTS5411 USB is unavailable

[3318729051]

I designed the self-made carrier board with reference to the P3449_B01 schematic diagram, which successfully entered the system and displayed the login interface.

The problem: the USB part schematic design is exactly the same as the P3449_B01, but now USB is not available.

Design details:

1. The chip used is RTS5411S, where GPIO0 (USB_VBUS_EN0) has been pulled down to ground, and the voltage is 0V.
   2, DSP_PWR1/2/3/4 output is 0V, so I use low level enabled USB_VBUS switch chip, so the USB power supply is normal, now there is 5V voltage.

Symptom: After the USB mouse is plugged in, the light at the bottom will flash for a moment and then go out, and the USB cannot be used.

Question:

1、I found the above picture through the forum. May I ask that after modifying the firmware according to the requirements in the picture, it should only modify the output enable voltage of DSP_PWR, and there will be no other effects?
2、What should I do if I need my USB to work? (I’m sure the current hardware design is the same as the official board)
3、If I am not using any USB HUB chip, can I connect the USBA pin directly to the USB 3.x port for use?

[3318729051]

I need correct an error：the USB VBUS EN0 voltage is now 1.8V

[3318729051]

I have now replaced the RTS5411 chip of the official carrier board and the TS5411S chip of the custom carrier board. The USB of the official carrier board is not working, and the USB of the custom carrier board is not working, but the LED light showing the USB insert will keep flashing. In theory, the USB HUB should be able to use after replacing with the official RTS5411?

[Trumany]

@3318729051

I have now replaced the RTS5411 chip of the official carrier board and the TS5411S chip of the custom carrier board.

If so, then there should be hardware design issue on your board.