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TPS65994AD: Type C DP - Display Port and USB3 function Debug (with Redriver TI-TUSB1044RNQ)

Elmo LU
Prodigy 40 points
Part Number: TPS65994AD


Dear Sir,

My TYPE C design uses TPS65994AD as the PD controller, supporting power input of 20V/5A. It also utilizes TI-TUSB1044RNQ as the Redriver. The TCP signals provided by the CPU support the functionality of USB3 and Display Port. Currently, the power delivery function of Type C is working properly, but the USB3 and Display Port functionalities are not functioning. When connecting a DP monitor, the CC PIN is communicating, but there is no communication detected on SML_CLK and SML_DATA. This prevents the TCP from providing the corresponding signals. Please assist me with this issue. Thank you.

Note: The GPIO configuration for PD and Redriver CTL0, FLIP, CTL1 functions are as shown in the diagram below.

Thank you

Elmo Lu