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DS90UB953-Q1: Is DS90UB953-EVM compatible with DS90UB964-EVM through CSI-2 interface

Trung Vu38
Prodigy 30 points
Part Number: DS90UB953-Q1

Hi All,

From the information on TI's website:

We would like to use a Deserializer Hub (DS90UB964-Q1) to split signal from a LVDS FPDLink3 camera as in the setup as follows:

However the board DS90UB953-Q1 we got from TI doesn't look compatible with the DS90UB964-Q1 through the CSI-2 interface. I don't know if something is missing or may I need an additional adapter/connector to make it work. 

Could anybody please help me out?

Thanks a lot!

  • 0
    TI__Guru* 83770 points
    The CSI Connector on the 953 board is designed to match with our own Image sensors boards. It is not designed to be compatible with the CSI output connector of other EVMs.
    you need to make your own adapter board.
  • 0 in reply to Hamzeh Jaradat
    Prodigy 30 points
    Hi Hamzeh,
    Thanks a lot for your quick feedback.

    What do you mean by "make your own adapter board"?
    Does TI provide any solution for this?

    Or could you please advise if there is any solution for splitting signal from a LVDS FPDLink3 camera with HSD or FAKRA connector to two HSD/FAKRA?

    Many thanks in advance!
    BR,
    Trung
  • 0 in reply to Trung Vu38
    TI__Guru* 83770 points

    Hello Trung,

    As I said, we do not have this adapter or any solution for this adapter; hence you need to develop your own board/ adapter for that.

    If you tell me what you want to do or what is your application maybe I can help you with other ideas?

    Please note, this forum is public. So, I would not post any confidential info in here.

  • 0 in reply to Hamzeh Jaradat
    Prodigy 30 points

    Hi Hamzeh,

    All I want is to find a existing solution to split a video signal from a LVDS FPDLink3 camera with FAKRA connector as below.

    These split signals will be fed into 2 different modules that process the image frames simultaneously.

    My idea was using a Deserializer hub (964/960) with 2 CSI-2 output and then reconstruct the signals using 2 Serializer boards supporting CSI-2 input (i.e.: 953).

    I don't know if there is a better idea, for example just using a FAKRA Y-splitter, but not sure that we can access the image simultaneously

    Splitter Y Type Cable FAKRA SMB Z Female R/A to FAKRA SMB Z Male

    I appreciate if you can advise to find an optimal solution for our need.

    Thanks a lot!

    Trung

  • 0 in reply to Trung Vu38
    TI__Guru* 83770 points

    Hi Trung,

    I wouldn’t split the signal due to signal integrity issues.

    The 913A can drive 2 cables, one with the (+) pin and one with the (-) pin, but only one side can have the backchannel at a time. so if backchannel is not required then you can try this possibility. Note that, this isn’t spec’d in the datasheet and not validated, so I wouldn’t use it in production.

    It’s normally better to split the signal on the DES side into two CSI-2 ports using the 954 or 960.

    Another alternative is to build an inline T-adapter to plug in between the cable using a 934+FPGA+933 combination.

    hope that helps.