The transfer process of the USB4 cable is as follows:
1. Encapsulate USB 3.2, DisplayPort, and PCIe data into one packet through the tunneling protocol.
2. The host router selects the tunneling protocol sending path and sends it through the USB4 structure.
3. The slave router selects the tunnel protocol receiving path and receives it through the USB4 structure.
4. Decode the packets of the tunneling protocol to separate out the USB 3.2, DisplayPort and PCIe data.
The transmission process of the USB4 cable is that the host first packages the USB 3.2 data, DisplayPort data and PCIe data into a data packet, and then transmits it to the device. After the device is received, the USB 3.2 data and PCIe data need to go through the USB 3.2 hub and PCIe switch respectively to determine the sent address, while the DisplayPort data is directly separated and sent to the receiver. The above is the general process of USB4 data transmission.
