Other Parts Discussed in Thread: TUSB1046EVM, , TPS55288, TIDA-050014, 10G-EXPANSION-EVM
Hello TI Team
I'm trying to use evaluation boards(USB-C-PD-DUO-EVM and TUSB1046EVM) to project images on a DP alternate mode compatible display.
The Applicaiton Report(SLVA844B, p15) said that the DFP sends a Enter Mode command message.
However I got PD log, it was found that DFP(TPS65987D) didn't send Enter Mode command message.
Do you know what causes Alternate Mode to not work properly? Or is there anything else I should check?
As a PD log of successful alternate mode, the laptop communication was also captured and compared.
Capture left:USB-C-PD-DUO-EVM+TUSB1046EVM+Display
Capture right:laptopPC+Display(DP Alternate Mode success)
I used the sink side board of the USB-C-PD-DUO-EVM. Attached is the project I wrote.
Referring to Application Report (SLVA844B) , the following four locations were set.
①0x38, Alternate Mode entry sequence
②0x47, TX identity data objects
③0x51, DisplayPort capabilities
④0x5C, GPIO event map
GPIO3 of USB-C-PD-DUO-EVM is connected to TUSB1046EVM as HPD.
GPIO14 of USB-C-PD-DUO-EVM is connected to TUSB1046EVM as FLIP.
(of cource I know that the push button S202,USB-C-PD-DUO-EVM will not work.)
230524USB-C-DUO-EVMsink_TPS55288.pjt
Sincerely,
Anna