I have a question.
It says that I can set pin 23 (HDMI_SEL) of SN65DP149 to High to enable DVI mode, but what does that change?
Does it remove the audio data, etc. from the TMDS signal?
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The DP149 includes the DP-HDMI adaptor ID buffer for HDMI/DVI adaptor recognition. It will not be accessible through the DDC interface when the HDMI_SEL/A1 pin is high.
When the adaptor is not accessible, the HDMI ID code will be returned as 0 and the source will know it needs to be in DVI mode.
Thank you for your comment.
I would like to ask you an additional question.
What do you mean by "DP-HDMI adaptor"?
Please let me check.
For example, this IC is mounted on the board of the sink device, and controls the HDMI_SEL port, so that when it is accessed by the Sauce device using the IIC, it can tell the Sauce device whether it is a DVI device or an HDMI device?
I learned a lot from your teachings.
I found out that what I wanted to do is not possible with DP149.
What I am looking for is an IC that will change the HDMI signal format to a DVI signal format.
Specifically, I want to remove only the data island and guard band of the HDMI signal.
Is there such an IC available from TI or elsewhere?