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DLPC120-Q1: data sheet

?? ?
Prodigy 10 points
Part Number: DLPC120-Q1

In the process of using DLPC120_Q1, we encountered the chaotic state of PGU display. Could you please provide the data sheet of DLPC120 register for reset operation by monitoring the status of DLPC120

  • 0
    TI__Genius 9570 points

    Hi,

    Thank you for reaching out to the E2E forums with your questions.

    To better understand the issue could you provide more information on the chaotic state of the PGU display. Do you have any pictures of the issue?  Is this a TI EVM system that has not been modified in any way?

    When you manually power cycle the system, does the chaotic state of the PGU display go away or still stay there?

     

    Thanks,

    Alex Chan

  • 0 in reply to Alexander Chan
    Prodigy 10 points

    when manually power cycle the system,the chaotic state go away.so I want to use the DLPC120 register to detect this state and reset it.I need the datasheet of DLPC120 register.

  • 0 in reply to ?? ?
    TI__Genius 9971 points

    Hello,

    We will further look into the issue that you have reported here and get back to you soon.

    As far as DLPC120 registers are concerned, those details are confidential and not available publicly. 

    Regards,

    Mayank

  • 0 in reply to Mayank Khandelwal
    TI__Genius 9570 points

    Hi,

    The available registers are in the I2C programmers guide which I have attached. Please see pg. 89 which has the appendix of registers. 

    4024.dlpu055_DLPC120-Q1_I2C_User_Interface_Programmers_Guide_201803.pdf

    Thanks,

    Alex Chan

  • 0 in reply to Alexander Chan
    Prodigy 10 points

    We need supports  to analyze the cause of this state, why the black background color turns to red. Our team analysis is that there is a problem with RGB color mixing, but the color of the displayed content is normal. We analyzed that it may be caused by the output problem of DLPC120,but we could not be sure .Currently, we still can't find the problem. 

  • 0 in reply to ?? ?
    TI__Genius 9570 points

    Hi,

    There are some further questions we have to try to debug this issue.

    • Do you have more information about the content you are displaying or a sample of the content we can also test on a TI EVM in our lab?
    • How is this display content set up, you are saying there is display content as well as background content? 
    • I assume you are using hdmi 864x480 external video?
    • Again is this a normal TI EVM that has already been calibrated?
    • My assumption is the background color should be all black correct but is now red? What happens if you put on an all black test pattern will the screen be all red?
    • Does this red display issue occur on startup or during operation? Does it stay chaotic or does it go away?

    Thanks,

    Alex Chan