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what max resolution supported by omap3530?

william4015
Prodigy 220 points

Other Parts Discussed in Thread: OMAP3530

hi , all!

From  H264_Decoder_OMAP3530_UserGuide I watched follow words:

‰  H.264 Decoder does not use the maxFrameRate and maxBitRate
fields for creating the algorithm instance.
‰  Maximum resolution supported is WVGA (864x480) 
‰  Supports all resolutions up to and below WVGA including PAL and NTSC D1, CIF, QCIF, and so on.

My question is omap3530 don't support 720p? I aways think omap3530 supports max resolution is 720p,

what is max resolution supported by omap3530?

thanks !

  • 0
    TI__Mastermind 41665 points

    william said:

    ‰  H.264 Decoder does not use the maxFrameRate and maxBitRate
    fields for creating the algorithm instance.
    ‰  Maximum resolution supported is WVGA (864x480) 
    ‰  Supports all resolutions up to and below WVGA including PAL and NTSC D1, CIF, QCIF, and so on.

    My question is omap3530 don't support 720p? I aways think omap3530 supports max resolution is 720p,

    OMAP3530 can drive a 720p display however the h.264 decoder you are looking at is not capible of decoding 720p video.

    william said:
    what is max resolution supported by omap3530?

    The theoretical maximum resolution would be 2048x2048 with a 74.25MHz max pixel clock, anything under these maximums should be possible in hardware. Within this fits HDTV 720p as well as VESA 1024x768, and I have even heard of 1280x1024 being done however you start running into standards issues where most monitors will not allow operation at low enough frame rates to keep below the 74.25MHz pixel clock limitation.

  • 0 in reply to Bernie Thompson TI
    Prodigy 240 points

    Won't the frame rate be incredibly slow at 2048x2048 @74.25MHz?

  • 0 in reply to Steve Landas
    TI__Mastermind 41665 points

    Steve Landas said:
    Won't the frame rate be incredibly slow at 2048x2048 @74.25MHz?

    It certainly would, and I am not sure there are many if any displays that would take that sort of signal, so practically speaking your maximum resolution is typically lower due to the pixel clock. The 2048x2048 is just the maximum size of a display you can configure in the display sub system registers, so it is theoretically possible to do, just impractical.