• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 1089 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DLPLCR4500EVM: Maximum numbers of LUT entries

cmz kopqi
Prodigy 110 points
Part Number: DLPLCR4500EVM
Other Parts Discussed in Thread: DLPC350

Hello,

I have a few questions regarding the Lookup Table (LUT) in the EMV:

According to the EMV User Guide, there are limits when saving a solution on how many entries any  given LUT can have at most
(max. 64 DEFAULT.SPLASHLUT [image index LUT] entries, max. 128 DEFAULT.SEQPATLUT [Pattern Definition] entries).

Is it possible to have more LUT entries (for example 300 entries in the SEQPATLUT) then the ones mentioned above?

And in the Programmers User Guide, what is the 'Number of patterns to display', and why can it range from 1 to 256?

Also, the GUI will let me add entries to the SEQPATLUT (Add Pattern to Sequence) even if it exceeds 128, but when trying to save the solution, it gives me the error message 'Error validating LUT data', but not when applying it. And the GUI stops working when trying to send the sequence.

Thank you.

  • 0
    TI__Mastermind 28005 points
    CMZ,

    It may be that, although the software is not limiting your inputs to the user settings, no more than 128 pattern definitions are supported. I will try to reproduce the issue you are seeing. In the meantime, can you get a log/screenshots of your issue reproduced on your end?

    Thanks,
    Philippe Dollo
  • 0 in reply to Philippe Dollo
    TI__Mastermind 30875 points

    CMZ,

    You can consider using Variable Exposure Pattern Sequence, actually all the functionality can be replicated with this LUT, this will allow storing more entries, and can easily meet your requirement.

    Regards,
    Sanjeev

  • 0 in reply to Philippe Dollo
    Prodigy 110 points

    Philippe Dollo said:

    can you get a log/screenshots of your issue reproduced on your end?

    I'm sorry, I deleted the INI file I used and I made no Screenshots. And I can't remember what Firmware/Solution I used. And I'm having difficulties myself in reproducing the error.

    What happens anyway if the Pattern Sequence is longer that it should be?

    Regards.

  • 0 in reply to Sanjeev
    Prodigy 110 points

    Sanjeev said:

    consider using Variable Exposure Pattern Sequence,[...] this will allow storing more entries

    But what is the maximum LUT size in that case, and where is it mentioned? I can't seem to find anything like that in the Programmers or Users Guide.

    Regards.

  • 0 in reply to cmz kopqi
    TI__Mastermind 30875 points
    Hi,
    Refer to DLPC350 programmer's guide, 2.4.3.4.11 Pattern Display Variable Exposure LUT Control, allow upto 1824 number of LUT entries, and 256 number of image index.
    Regards,
    Sanjeev