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TVP5158 Multi Channel Video Input Port Capture Driver

Travis Fleck
Prodigy 30 points
Other Parts Discussed in Thread: TVP5158

Hello,

I noticed a MCVIP driver was posted that could capture 16-Ch CIF for the TVP5158. Is it possible to capture 16-Ch D1? If not, what are the limitations?

Thanks,

Travis

  • 0
    TI__Genius 16810 points

    Hi Travis,

    16-chan D1 requires four TVP5158 devices and four 8-bit video ports with each operating at a 108MHz clock rate.   This solution has only been tested on the DM8168.  The DM8148 can potentially support this, but has not yet been tested.

  • 0 in reply to Larry Taylor
    TI__Mastermind 19985 points

    Hi Travis,

    Just to add to Larry's comments and to explictly answer your question for DM36x, we cannot support more than 4 channels D1 on DM36x device. To increase the channel density, we can reduce the resolution to CIF and then use the same video input port for getting 8 channels in. This is because DM368 has only one video input port and can go to a max of 120MHz. Although it is a 16 bit port, but still it cannot be used as two 8-bit ports. Hence that limitation comes on DM36x.

    The driver posted as announcement on E2E is for DM36x and hence support upto 4 CH D1 or 8 CH Half-D1.

    Regards,

    Anshuman

    PS: Please mark this post as verified, if you think it has answered your question. Thanks.

  • 0 in reply to Anshuman Saxena
    Prodigy 30 points

    HI Anshuman,

    Thanks for your reply. I have another question related to the TVP5158 and the capture driver. Is it possible to have a configuration with (4) TVP5158's in which 2 are cascaded and the output of the master is tied to channel A of a DM6467 and 2 additional are cascaded and tied to channel B of a DM6467? It would be similar to the diagram from figure 3-14 of the TVP5158 datasheet but I would like to have 4 images at D1 available on each channel of the DM6467. Then, would it be possible to perform an MJPEG compression at 30FPS on the 8 cameras and stream them over Ethernet? 

    Thanks for your help.

    Travis