(ADV7511W) To output QVGA with RGB to RGB

Hi !

I already asked about this with few thread.

(ADV7511W)Do you have a script for QVGA YUV to RGB? 

(ADV7511W)Does ADV7511W support QVGA? 

Our customer are trying to make new script.

And I was checking ADV7481's script because there is no script for ADV7511W.

The different between 480p and 720p is this.

If our customer want to use  ADV7511W with QVGA RGB to RGB where should they change?

Best regards

Kawa

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  • 0
    •  Analog Employees 
    on Apr 21, 2017 6:03 PM

    Hi Kawa,

    To modify a script you would need to know the parameters of the QVGA standard.

    Horizontal front proch

    Horizontal back proch

    Sync width (H & V)

    Total pixels

    ..

    ..

    etc

    etc

    There is a lot of video parameters and in order to modify or create a custom script you would need all of them.

    We are not sure if the ADV7511 will even pass QVGA. The internal design has line counters, pixel counters etc. Some of these could be sized so that VGA was only ever expected as a minimum. Also bear in mind the pixel clock rate. 25Mhz would be VGA I'm assuming QVGA is a bit less than this. Again the ADV7511 will probably need pixel repetition turned on in order to support a low freq pixel clock.

    Regards,

    Mike

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  • 0
    •  Analog Employees 
    on Apr 21, 2017 6:03 PM

    Hi Kawa,

    To modify a script you would need to know the parameters of the QVGA standard.

    Horizontal front proch

    Horizontal back proch

    Sync width (H & V)

    Total pixels

    ..

    ..

    etc

    etc

    There is a lot of video parameters and in order to modify or create a custom script you would need all of them.

    We are not sure if the ADV7511 will even pass QVGA. The internal design has line counters, pixel counters etc. Some of these could be sized so that VGA was only ever expected as a minimum. Also bear in mind the pixel clock rate. 25Mhz would be VGA I'm assuming QVGA is a bit less than this. Again the ADV7511 will probably need pixel repetition turned on in order to support a low freq pixel clock.

    Regards,

    Mike

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