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DVI to CVBS conversion

 

I need to convert a DVI video feed to composite video (CVBS). I am currently looking at using a AD9887 or similar to receive the DVI signal and a ADV7170 to convert the digital video into composite. The questions I have regard the compatibility of the two chips. Alternatively is there a one-chip solution available?

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  • Thanks for the input, I think that answers that question.

    I have a couple more questions,

    1) The video source need to convert does not use/have EDID or hot plug detect pins, Is the 7611 capable of being set up to receive signals from a source without these pins?  If so how do I do it?

         -I have read other discussions related to this subject but was hoping to get the answer in one place

    2) If I read correctly, it looked like I can manually assert the hot plug detect via I2C control, is there a way to set the input format as well? (The device i am receiving signals from constantly outputs 1024x768 @ 60Hz (XGA) that is compliant with VESA v1.0)

    3) I do not need a lot of features, is there a less flexible dvi receiver than the ADV7611? 

    4) I'm confused about which chip would do the down conversion, am i correct in thinking that the ADV7611 will receive XGA and output BT601 or BT656 and the ADV739x will receive that output and convert it to composite?

      Thanks again for the help

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  • Thanks for the input, I think that answers that question.

    I have a couple more questions,

    1) The video source need to convert does not use/have EDID or hot plug detect pins, Is the 7611 capable of being set up to receive signals from a source without these pins?  If so how do I do it?

         -I have read other discussions related to this subject but was hoping to get the answer in one place

    2) If I read correctly, it looked like I can manually assert the hot plug detect via I2C control, is there a way to set the input format as well? (The device i am receiving signals from constantly outputs 1024x768 @ 60Hz (XGA) that is compliant with VESA v1.0)

    3) I do not need a lot of features, is there a less flexible dvi receiver than the ADV7611? 

    4) I'm confused about which chip would do the down conversion, am i correct in thinking that the ADV7611 will receive XGA and output BT601 or BT656 and the ADV739x will receive that output and convert it to composite?

      Thanks again for the help

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