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Support for Hitachi TX14D22VM1BPA LCD Display

David Eastburn
Prodigy 100 points

I'm looking for confirmation that I'm not overlooking an OMAP display configuration that will provide compliance with Hitachi's Hsync pulse width spec.  The critical parameter for this display is the simultaneous assertion (active low) of both the Hsync & Vsync signals.  Based on the TRM, the only way I see to achieve this is to make Vsync active low polarity and Hsync active high polarity.  The display does work.  However, the Hsync is out of spec.  Hitachi has a max Hsync pulse width of 10 pixel clocks.  See attachment for scope captures and spec info.

4237.Public Distribution of OMAP3530 Video Cfg TX14D22VM1BPA.ppt   

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    TI__Guru*** 125430 points

    David Eastburn said:
    The critical parameter for this display is the simultaneous assertion (active low) of both the Hsync & Vsync signals.

    I spoke with a display expert in Dallas and he did not know of any setting that would allow simultaneous assertion of hsync and vsync.