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Can any one tell me what is CCDC?

Mingming Chen
Intellectual 310 points

Now I am trying to write a programe of v4l2, but when I read the file vpfe_capture.c, I can not understand what is CCDC, what's its relationship with vpfe,thank you very much.

for exemple:

static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe_dev,
                 struct v4l2_format *f)

  • 0
    Expert 2995 points

    CCD (charge coupled device) and CMOS (complementary metal oxide semiconductor) image sensors are two different technologies for capturing images digitally.

    CCDC is CCD controller.

    ISIF is Image Sensor Interface.

    CCDC and CMOS capture modules are part of ISIF.

    VPFE is Video Processing Front End.

    ISIF is part of VPFE.

    Reference: Video Processing Front End (VPFE) User's Guide, Chapter 4, VPFE/ISP Functional Description : http://focus.ti.com/lit/ug/sprufg8c/sprufg8c.pdf

  • 0 in reply to Constantine
    Intellectual 310 points

    My question is that, I am trying to use MT9D131 camera, but I do not know whether I should link the DOUT to CIN or YIN, I have found the ccdc_hw_device.h, but I do not know where is the C file, can anyone tell me where I can change the registre YCSWAP

  • 0 in reply to Mingming Chen
    TI__Expert 4685 points

    There is a file by name - dm365_ccdc.c in KERNEL_DIR/drivers/media/video/davinci. You should be able to find CCDC/ISIF programming there.