Without using the usb hub chip, can the USB interface be directly connected to the usb2.0 port (pin115, pin117). Can the USB work normally?
Sure, it can be connected to port directly, you can refer to design guide for USB part design.
USB 2.0 MODE:HOST and Device
Do these two modes require software control? Or is the nx module automatically detected when the usb device is plugged in?
please refer to the usb guide inside the developer guide.
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