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duty-cycle changes in DLPC3439 controller

PhilM5
Intellectual 1680 points
Other Parts Discussed in Thread: DLP4710, DLPC3439

Hi  All,

I need to display bichromatic and monochromatic images on the DLP4710 kit.

For this purpose , I would need to modify the duty-cycle values of the Look Structure in the DLPC3439 controller.

The command 26h allows to read those values (byte 1-6) and the command 22h allows selection of the Look table.

My need consist in modifying the Look values which are in Flash (likelly in 41h-4Fh, addresses marked as RESERVED in the User's Guide). 

Can you please let me know if this is the right procedure ?

The desired result is to change the duty-cycle to 50% for Green and 50% for Red for the bichromatic setup and 100% for the Green in case of monochromatic setup.

Thanks for your help.

  • 0
    TI__Genius 10495 points
    Hello User,

    Thank you for your interest in our DLP Technology.

    The DLP4710 chipset is designed for Video and Display Applications. We developed a separate chipset for the application you are looking for and which is supporting your needs.

    Please take a look at our Advanced Light Control chipset under following page:

    www.ti.com/.../overview.page

    The Advance Light Control group is also present on E2E for any question regarding the chipset.

    e2e.ti.com/.../


    Best regards,

    Nadine
  • 0 in reply to Nadine Estermann
    Prodigy 20 points
    Hi, I have similar desire to modify this use only one color, but the links are too old to follow the answers. Can you re-send advise to me? Thanks!
  • 0 in reply to jp3d
    TI__Genius 10495 points

    Hello User,


    Thank you for your interest in our DLP Technology.

    The links in this forum are still valid and can be accessed. Would you explain further what you would like to achieve, please ? Do you currently have purchased a EVM from us or are you planning on purchasing one ?


    Thank you,


    Nadine

  • 0 in reply to Nadine Estermann
    Prodigy 20 points
    I have not yet purchased this because I first want to be sure I can configure it for single or two-color use. Also, is this firmware something I can switch back and forth if I want different applications, or is it a permanent alteration? As for the links, they did take me to another thread ok, but the conversations there had long gone off of my topic of interest.
  • 0 in reply to jp3d
    TI__Genius 10495 points

    Hello User,


    Since the 4710 chip set is mainly for display application switching between one or two LED's would be a customized firmware change. Therefore I would recommend looking into the advanced light control chip sets.

    Is there a specific reason you would like to go with the 4710 chipset ?

    Best regards,

    Nadine