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OMAP LCD REFRESH

Steve Landas
Prodigy 240 points
Other Parts Discussed in Thread: OMAP3530

Hi,

Can anybody explain how the OMAP3530 handles LCD refresh? I currently interface to a 640x480 panel but want to interface to a much larger panel and would like to have a feel as to the affect the LCD refresh would have on the CPU bandwidth,

 

 

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    TI__Mastermind 43875 points

    Steve,

    The CPU is not involved in the LCD output directly, being only involved potentially in the rendering to the frame buffer in the first place.

    You can find some information on the DSS here...

    http://processors.wiki.ti.com/index.php/Display_Subsystem

    The display bandwidth requirements can be calculated by WxHxFxD where W = width, H = height, F = display frame rate and D = frame buffer color depth in bytes.

    Rendering bandwidth requirements are much more difficult to calculate and depend very much on your application, whether the entire screen is being rendered, whether the SGX is rendering etc...

    BR,

    Steve