• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 32 subscribers
  • Views 472 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB953-Q1: Two CSI-2 sensors in same serializer

Md Mizanur Rahman
Prodigy 140 points
Part Number: DS90UB953-Q1

Hi,

I am using two CSI-2 sensors in conjunction with two DS90UB953 serializers and one DS90UB954 deserializer. But I have seen the same setup has been done using only one Serializer. How to achieve this? Is there any extra ICs I have to use? 

N.B.: Both sensors are the same model and have support up to CSI-2 2 lane output.

Thanks,

Mizan

  • 0
    TI__Guru** 103215 points

    Hello Mizan,

    The only way to achieve this is to use additional devices. Take the output of the 954 in your current setup into the input of another 953 and then that 953 would be carrying 2x imager's data which could connected to yet another downstream DES. There is no way to split a MIPI port on the 953 into 2x2 inputs to accept two different sensor's data. 

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    Prodigy 140 points

    (Edit: I know I have to use additional devices. That's why I asked which ICs I need to use.... to bridge those sensors and split those sensor data after the deserializer)

    The surprising thing is the 'there is no way' thing is right now on my hand. they have used some part called ____________ (about which I could not find any info on the net) as a sensors bridge. I already have found an IC like this (supports 2x720px60FPS) but it can't provide the high data rate transfer (2x1080px60FPS) that I need.

    Thanks for replying

  • +1 in reply to Md Mizanur Rahman
    TI__Guru** 103215 points

    Hello Mizan,

    What I'm saying is that there is no way to achieve this with only the SERDES devices you mentioned in your first post. If there are other external devices which can be used to combine two sensor's data into one CSI-2 interface (like an ISP function), then that would be outside of the scope of the FPD-Link products and what we have in our current portfolio (aside from the multi-chip solution which I provided in my previous post). 

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    TI__Guru** 103215 points

    Hello Mizan,

    You marked this question not resolved? Do you have a follow on question here? Is something unclear?

    Best Regards,
    Casey