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TUSB1046-DCI: DP to USB to DP

Hollis Liu
Intellectual 2565 points
Part Number: TUSB1046-DCI

HI team,

i have a quick question,

if i change the connection from USB(USB training and usb enumeration) to DP(DP training), and from DP to USB again, need we do USB training and enumeration again for USB?

if we change back to DP again from usb, need we do DP training again?

Thanks. 

  • 0
    TI__Guru 64326 points

    If you change from USB only to Multi-function mode ( USB + 2lane DP) then only DP needs to train. If go back to USB only USB does not need to re-train (assuming device is not disconnected for the USB-C port). If you switch back and forth to USB only and DP only then both will have to retrain when reconnected.