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dm3730 multimedia performance

zhang rex
Prodigy 80 points

Other Parts Discussed in Thread: DM3730

hello :

     as we known the dm3730  have 1. IVA2.2 subsystem with a C64x+ digital signal processor (DSP) core
                                                                2. SGX subsystem for 2D and 3D graphics acceleration to support display and gaming effects;

    could  any one tell me this cpu can performance 1080p codec  or not ? additional , this cpu  can support 2 Parallel lcd at same time , dose that  means it can support one SVGA LCD and one 1080p display interface smae time? if can do, what state or roadmap for dm3730 sdk release .

                            thanks in advance!

  • 0
    TI__Mastermind 43875 points

    The LCD supports dual LCDs but only in RFBI mode which requires the LCD to have an integrated frame buffer.

    In raster mode only a single LCD is supported.

    The max pixel rate supported is 74.25MHz which is sufficient to a single display up to around 1280x720p.

    See the following Wiki page for frame rate information.

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

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 80 points

    thank you Steve!

    could you also tell me  if  use RFBI mode for daul LCDs , dose it can support one SQVGA(1024x768) for LCD, and other one for  HDMI(least  is 1080i)?

                BR

                   Rex

  • 0 in reply to zhang rex
    TI__Mastermind 43875 points

    Rex,

    There are a number of factors to consider with the RFBI mode...

    1) The connected device (typically the LCD, but could be some other interface) MUST have an integrated frame buffer. Although you can get large displays which have integrated frame buffers and implement the RFBI interface, they are not typical and are usually expensive.

    2) The max achievable pixel rate in RFBI mode is very much lower than in synchronous raster mode.

    3) The max pixel rate is shared between the connected displays which will reduce the resultant frame rate even further.

    4) Interlaced output is not possible on the OMAP3 outputs

    I assume you are really wanting to display 1024x768 and 1080i at 60 frames per second?

    The only TI devices which are able to do this are OMAP4 and Integra devices. OMAP3 cannot.

    Bottom line is that RFBI is fundamentally a different interface type and would require either special RFBI capable LCD modules, or a fair amount of external support logic/memory.

    BR,

    Steve

  • 0 in reply to Steve Clynes
    Prodigy 80 points

    got it and thanks !