VGA input to ITU-656, ADV7403 or ADV7181?

GuenterL escribió:

Hello,

So here's what I understand you're trying to do:

source uP -> digital RGBHV -> analog RGBHV ->

    board to board connectors ->

        analog RGBHV ->digital RGB BT.656 -> sink uP

and you're really only interested in the analog RGBHV -> digital RGB BT656 conversion.

Both the ADV7304 and ADV7181 can insert the AV codes to give you the BT.656 stream.

Since you only have control of the sink board, I really don't see an easier way to do what needs to be done.  Regardless you'll need some kind of DAC and AV code insertion.  Both parts you suggested will do that.  For testing you can just pulg the second board into a PC video output and see if the uP receives the video stream.

Yes, this is what i try to do.

Now this is the easyest way because we just have manufacturer the board of the source uP, but if we would re-design this board, is there a more simple solution? This option would be: source uP -> digital RGBHV ->   board to board connectors -> digital RGB BT.656 -> sink uP.

GuenterL escribió:

Hello,

So here's what I understand you're trying to do:

source uP -> digital RGBHV -> analog RGBHV ->

    board to board connectors ->

        analog RGBHV ->digital RGB BT.656 -> sink uP

and you're really only interested in the analog RGBHV -> digital RGB BT656 conversion.

Both the ADV7304 and ADV7181 can insert the AV codes to give you the BT.656 stream.

Since you only have control of the sink board, I really don't see an easier way to do what needs to be done.  Regardless you'll need some kind of DAC and AV code insertion.  Both parts you suggested will do that.  For testing you can just pulg the second board into a PC video output and see if the uP receives the video stream.

Yes, this is what i try to do.

Now this is the easyest way because we just have manufacturer the board of the source uP, but if we would re-design this board, is there a more simple solution? This option would be: source uP -> digital RGBHV ->   board to board connectors -> digital RGB BT.656 -> sink uP.