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Last Post 08 Aug 2005 02:55 PM by  mikea@logicpd.com
LCD-5.7-QVGA-10
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phlei
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Posts:


--
05 Aug 2005 11:44 AM
    We are developing a LCD controller to drive all sortsof the LCD TFT display.

    I try this one first and give the HSYNC, VSYNC, ENAB and the screen is all white.

    The rest of the signals in the display connector like VDDEN,VEEEN or PSAVE are all NC.

    Do you know it might be the cause of the problem?
    Anonymous
    Posts:


    --
    05 Aug 2005 05:41 PM
    Hello,

    Can you please let me know what card engine you are using?

    Have you tried doing a 'video-open 1 16' in LogicLoader and reading the registers using the 'x' command to get the correct registry values for the 3.5 display kit?

    Thanks,
    mikea@logicpd.com
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    Posts:


    --
    08 Aug 2005 02:55 PM
    phlei,
    We would need to get more information from you to help out.
    Questions:

    1) Are you using one of our display kits or are you just using video-open with one of the available modes for a custom display?

    2) If you are connecting a custom display, which is it?

    3) Which product of ours are you using?


    There are two docs you should look at:
    http://www.logicpd.com/do...N_70000161_Rev_A.pdf

    http://www.logicpd.com/do...47/1002791_Rev_B.pdf

    The second doc is if you are using LogicLoader 2.x, which hasn't been released on all of our kits so it may not quite fit your situation.


    VDDEN, VEEEN are used as basically a 'on' signal for power supplies. If you are powering a display directly, this isn't an issue. Power Save is a ADTFT signal and shouldn't be needed here also.

    How much confidence do you have in your timing settings?

    Thanks,
    -Mike
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