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M. Jeong
M. Jeong
Associate III
March 12, 2017
Question

Is the DCMI capable of acquiring 12-bit raw bayer image data?

  • March 12, 2017
  • 3 replies
  • 790 views
Posted on March 12, 2017 at 14:08

The data sheet of the STM32F429 shows that its camera interface can take 14-bit parallel data and the maximum data rate is 54MB/s. Also it says the interface supports 8-bit progressive video monochrome or raw bayer format, without mentioning higher bitdepth. I wonder if it does imply that you can't capture 10-bit or 12-bit raw bayer image data with the DCMI.

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    3 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    March 12, 2017
    Posted on March 12, 2017 at 14:17

    I believe it is agnostic to the form of the data

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    M. Jeong
    M. JeongAuthor
    Associate III
    March 12, 2017
    Posted on March 12, 2017 at 14:44

    The table 18 on the following document shows 14-bit raw bayer format is supported. But I'm not sure why the data sheet doesn't mention 10, 12, 14-bit.  

    http://www.st.com/content/ccc/resource/technical/document/application_note/26/22/fe/1d/f1/ca/4c/08/DM00161778.pdf/files/DM00161778.pdf/jcr:content/translations/en.DM00161778.pdf

     

    Also it's strange that the ST wrote '8/10, 12, 14 bits progressive video (monochrome or raw bayer) '. What does '8/10' mean...?  Why are there two same items in the 'supported data format' box? 

    Tesla DeLorean
    Tesla DeLorean
    Guru
    March 12, 2017
    Posted on March 12, 2017 at 15:32

    8 or 10-bit modes

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