Can I connect the audio output ports of ADV7626 to audio input ports directly?
I don't want to use additional/external IC for audio part, is it possible?
Thanks for advance.
Do you have one of our evaluation boards for ADV7625?
How do you configure the board either through script or through software driver?
Did you visit ADV7625 Design Support Files for configuration scripts, documents, schematics etc?
Do you want to perform Audio extraction from HDMI RX input and insert in to HDMI TX outputs?
Please look into the section 5.2 Audio I/O overview from ADV7625 Hardware manual which has more details about this
Thanks for your prompt reply.
I don't have any evaluation board and I haven't studied the documents in detail, yet.
I just reviewed the datasheet and block diagram for now and I will study more.
I'm just planning design a circuit which adds some characters on video (HDMI source). There will be an HDMI input and an HDMI output with OSD. So, I don't wan't to waste time with audio part.
As far as I understood from block diagram, ADV7626 extracts audio from HDMI source (Rx) and I should combine audio and video (through audio input ports) after adding OSD operation and then this combination will be my HDMI output (Tx).
I saw that you processed audio in your evaluation board by using additional ICs.
I just want to know should I process audio with aditional ICs (is it must if I add OSD on video?) or can I connect audio output to audio input directly or ADV7626 do this process internally if I set the correct register settings (so,I don't need to use any audio connection)?
Your valuable answer will be very helpful for me and I will start to study the docs. in parallel.
We recommend to use our evaluation board and software to validate the same since OSD, audio extraction and insertion feature verified with the software.
ADV7626 can extract the audio and after processing audio can be inserted with audio input ports, audio input ports are meant only for audio, no need to combine video.
For adding OSD on video, there is no additional ICs needed. You can design your GUI using Blimp tool and can be overlaid on video. You can refer this details in the below link
Blimp OSD Designer tool for NatureVue™ ADV800x and Advantiv® ADV7625
What are audio formats(PCM or compressed) that you want to support?
If you don't want to do any audio processing and no need to extract the audio, the audio can be passed from HDMI Rx to HDMI Tx by setting registers.
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