TUSB1046EVM: USB C no display

Muhyin Daud

Prodigy 10 points

Part Number: TUSB1046EVM
Other Parts Discussed in Thread: TUSB546EVM, TPS25751

Tool/software:

Hi,

I have similar problem, there is no Display output, even after following the steps

can you please suggest ?

3 months ago

0 Vishesh Pithadiya 3 months ago

TI__Mastermind 34205 points

Hi,

The PD controller should configure the CTL0 and CTL1 pins, so its best to lave these floating. Are you able to use I2C to control the part?

Do you see HPD sent from the USB-C sink to the DP source?

0 Muhyin Daud 3 months ago in reply to Vishesh Pithadiya

Prodigy 10 points

Hi, thanks I managed to get it working.

I also have TUSB546EVM, it works fine with 5V DC barrel input. However, how to configure the USB C to be able to do power delivery with 9V-20V input ?

0 Muhyin Daud 3 months ago in reply to Muhyin Daud

Prodigy 10 points

pump in 9V or 15V, but the Vbus still only 5V

0 Vishesh Pithadiya 3 months ago in reply to Muhyin Daud

TI__Mastermind 34205 points

Hi Muhyin,

This will require some assistance from the PD team, as the PD controller will negotiate the Vbus past 5V. I will assign this thread to them.

0 Chris Sterzik 3 months ago in reply to Vishesh Pithadiya

TI__Guru 61391 points

Hello,

This would require a firmware update to the PD controller via the EEPROM found on the EVM. I was not able to find the tools associated with this PD controller on ti.com and also found this device was not recommended for new designs. If you have already acquired the tools from your initial development, then please use those to configure the PD to support the desired operation. Otherwise, please consider moving to the TPS25751.

Regards,

Chris

0 Muhyin Daud 3 months ago in reply to Chris Sterzik

Prodigy 10 points

Hi, can you share any document how to configure the EEPROM to enable PD controller ?

0 Christopher Lim1 3 months ago in reply to Muhyin Daud

TI__Mastermind 35985 points

Hi Muhyin,

Please see if this helps: https://www.youtube.com/watch?v=H-jbslhfpNk

Once you generate a pjt, if you share it with us, we may be able to review it.

Please also realize that the TPS65987x family is NRND and may not be suitable for your design. This is primarily due to limited patch space which means the part cannot support new feature updates or the latest USB-PD compliance (PD 3.2). Unfortunately, there is not a DP alt mode PD controller replacement at this time.

Thanks and Regards,

Chris

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TUSB1046EVM: USB C no display