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TPS65981: DP monitor can be displayed, but USB3 device cannot be detected

Part Number: TPS65981


Dear sir,

Our customer is using TPS65981+TUSB1046 for type-c port.

Now the DP monitor can be displayed, but USB3 device cannot be detected.

The CTL1 / CTL0 / FLIP of TUSB1046 are connected to GPIO3 / GPIO0 / GPIO15 of TPS65981 respectively.

The operation of CTL1 and FLIP looks fine, but there is no any action on CTL0 (GPIO0) when USB3 device plugging.

The following is the schematic and PD firmware .pjt files for TPS65981

Is there any thing wrong?? Would you please give me some advise?? Thank you very much.

PEB-9790CG2A-ZR0_USBPD 100W_20180905.pdf

TPS65981_TUSB1046_DRP_Host_403.pjt