• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 411 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.

SN65DSI83: Regarding handling SN65DSI83 error

user6438649
Intellectual 400 points
Part Number: SN65DSI83
Other Parts Discussed in Thread: DSI-TUNER

Dear,

I'm in trouble.
Please give me some advice.

Now, our current system
I performed the initialization sequence in Table 7-2.
1 When the address 0xE5 was read at seq11, the data 0x08 was read.
 Upon examination, it was found to be LLP_ERR.
2 When I observed A_Y2P/N waveform in Fig. 7-5, I found that VS and HS were output, but DE was not output.

Question1
Where can I find a solution to this error?
Question2
If DE is not output, what is the cause?

Sincerely,

seq.pdf

  • 0
    TI__Mastermind 35130 points

    Hi Sakai-san,

    How do you know HS and VS are output but not DE? Can you share waveforms? Also, can you configure the device for test pattern generation and share an image of the test pattern you see?

    Regards,

    I.K. 

  • 0 in reply to Ikechukwu Anyiam
    Intellectual 400 points

    Dear I.K. 

    Thank you for your reply.

    I performed test pattern of SN65DSI83.

    I attached a file.

    Figure1 and figure2 show the waveform of the output of the SN65DSI83 received by the FPGA in our system.

    Figure3 and figure4 show the SN65DS83 running in a test pattern.It is the waveform received by FPGA.

    Question1

    Where can I find a solution to this error?

    Question2

    If DE is not output, what is the cause?

    Question3

    What is the test pattern for sn65dsi83?

    I would like to know the detailed image data (RGB pixel values).

    Please give me some advice.

    Sincerely,

    mipi_waveform1.pdf

  • +1 in reply to user6438649
    TI__Mastermind 35130 points

    Hi Sakai,

    1. Since it looks like the error is coming from your DSI source you will need to check with your DSI source manufacturer for possible solutions. For the SN65DSI83 itself you should make sure that you're following the initialization sequence correctly and that you're configured the device correctly. You can use the DSI-Tuner to generate the register settings as well as reference this video for a guide: https://training.ti.com/configuring-sn65dsi8x-single-channel-dsi-single-link-lvds-operation. You can also reference this FAQ for a debug guide: https://e2e.ti.com/support/interface/f/138/t/852871  

    2. Since we can see DE output when you use the test pattern, it looks like the error is from your DSI source. The test pattern is internally generated and does not use any data from the DSI side.

    3. The test pattern is internally generated and does not use any DSI data. It only uses either the DSI CLK or an external REFCLK. The RGB pixel values are whatever you've configured into the device registers.

    Regards,

    I.K.