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DS90UB954-Q1: Serialize and Deserialize CSI Data Lane Change

Kyung Min Yang
Prodigy 130 points
Part Number: DS90UB954-Q1


I want to know if the following conditions are possible.


If the above conditions are possible, I would like to know how much the clock frequency of one camera is acceptable. wait for the reply. Thank you.

  • 0
    TI__Guru** 107810 points
    Hello,

    this archeticture is not possible. you can either bring out both cameras on each two lanes and use the wanted stream and discard the rest in the processor, or you can use the 960 where each camera data can go into a seperate output.
  • 0 in reply to Hamzeh Jaradat
    Prodigy 130 points 
    Thank you for answer.
Your answer is that even though  DS90UB954 get two camera inputs from the two DS90UB953, it can only select one camera input?

    Is the block diagram below what you said?
     


    Then, as shown in the picture above, when the camera transmits data to the DS90UB953 with 4-lane, can it be output from DS90UB954 to 2-Lane?


    Thank you for your help. I will wait for your reply.

  • 0 in reply to Kyung Min Yang
    TI__Guru** 107810 points

    Hello,

    you can connect two cameras to the 954 and bring out the data from both cameras in one CSI output (4 lanes)

    Or you can connect two cameras to the 954 and bring out the data from both cameras in one CSI output (2 lanes) and replicate the same data into the other CSI output (2 lanes)

    All this depends on the data rate of the two cameras. if you are using 2 cameras each 2Mp then only first option is possible, but if you are using 2 cameras each 1Mp then also option 2 is possible.