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TUSB564: TUSB564:Displayport can not work correctly

Part Number: TUSB564

hi teams,

We use TUSB564 to design a TYPE-C Docking support USB3.1 and Displayport , USB3.1 is OK,but there is a problem with the displayport .

TUSB564 use GPIO Control mode ,I2C is disabled.

when I config AUX Channel of TUSB564 like pictrue 1 and 2,displayport can not export video

when I config AUX Channel of TUSB564 like pictrue 3,displayport can export video normally

So how is it happen ? Is the TUS564 Datasheet wrong?

If i want to use TUSB564's AUX Switch Channel,what should i d?

Pictrue 1

Pictrue 2

Pictrue 3