TMDS181: TMDS181 for both source and sink application

Hi,

For the source side application, does the source support AC-coupled or DC-coupled HDMI? The TMDS181 should only be used with a DC-coupled HDMI source.

Thanks
David 

Hi David,

Thank you for your response. 

My source supports AC coupled HMDI. I will select an alternate IC.

Also can you please let me know whether TMDS181 can be used if I want to have audio interface as well through HDMI. Does this IC support audio as well. 

Hi,

If the source is AC-coupled, then the TMDS181 is not the right device for this design. Please take a look at DP158 or DP159.

Thanks

David

Hi David,

Thankyou for your response.

1.What about the audio support. Does TMDS181 support audio over HDMI. If yes do you have any reference schematics that has audio circuit implemented in it.

Hi,

The audio, video, and auxiliary data are transmitted across the three TMDS data channels, so please follow the reference schematic in the datasheet or the EVM schematic for your design.

Thanks

David

Hi David,

can you please clarify whether ARC_out and SPDIF signals are mandatory for audio signals over audio can be taken care through TMDS signals

Hi,

Both ARC_out and SPDIF are optional.

Thanks

David

Hi David,

BY mentioning ARC_OUT and SPDIF are optional, it means that audio data are transmitted over TMDS lines.

Is my understanding correct. Kindly confirm.

Hi,

Your understanding is correct. 

Thanks

David 

Hi David,

1. I referred Bitec FMC Card schematics with TMDS181 used for Sink interface. I observed 50ohm resistor connector at the output side. Can you please let me know whether these resistors are mandatory and significance of these resistors. Attached is the image of schematics of the same card.

2. Also can you confirm that the IC can be powered using VDD=1.15V