TDP1204: Schematic review request for no output issue

David Park

Expert 6650 points

Part Number: TDP1204

Tool/software:

Hi,

Could you review the schematic for no output issue?

For GPU board, customer is using M3A module from Nvidia and adopted TDP1204 to convert DP to HDMI.

They checked Nvidia driver works well but there is no output to monitor.

Please review the schematic.

Thanks.

over 1 year ago

0 David (ASIC) Liu over 1 year ago

TI__Guru**** 176721 points

Hi,

Could you please share portion of the schematic that shows the connection of TDP1204 to the HDMI connector?

Thanks

David

0 JONGWOO KIM over 1 year ago in reply to David (ASIC) Liu

Prodigy 20 points

We have two boards. each connection is VPX Connnector.

("A" Board) J22 HDMI Connecotr -> J15 VPX Connector <-> P3 VPX Connector -> TDP1204 ("B" Board )

0 David (ASIC) Liu over 1 year ago in reply to JONGWOO KIM

TI__Guru**** 176721 points

Hi,

Is this a DP to HDMI or a DP++ to HDMI design? TDP1204 can only support a DP++ source, not a DP source. For DP to HDMI, you would need an active protocol converter.

If the design is for a DP++ source, it looks like the TDP1204 output is DC-coupled, can you please verify R47 is not populated on the board?

Can you also share the schematic in a .pdf format?

Thanks

David

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TDP1204: Schematic review request for no output issue