• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 2 answers
  • Subscribers 33 subscribers
  • Views 305 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.

DS90UB953A-Q1: support on 3M 60fps question

Xuan Chen
Prodigy 50 points
Part Number: DS90UB953A-Q1


Hi, TI team

I'm designing a camera ISX031 imager which output a 3M YUV422 video. For current application, it is only 30 fps, however we would like to reserve the possibility of increasing to 60 fps. Will DS90UB953A be sufficient to support 60fps? I saw mipi throughout is very tight without blanking. Is there any practice already?

Regards,

  • 0
    TI__Mastermind 28450 points

    Hi,

    What is your display resolution? Will you need to check if a specific deserializer will support your application as well? If so, I would also need to know how many sensors, what clock type, and what forwarding type you are using.

    Best,

    Lucas

  • 0
    Prodigy 50 points

    Hi, Lucas

    Thanks for your response, the resolution is 1920*1536. Yes, it would be great if you can also advice the deserializer pair. It will have 4 sensors in the system and we would like to use synchronous mode, if applicable(we have some concern for EMC, not sure how it performed). Otherwise, we will use Non-Synchronous external clock mode and we would like to use serailzer generate clock for sensor. In this case do you have recommended crystal?

  • 0 in reply to Xuan Chen
    TI__Mastermind 28450 points

    Hi Xuan,

    Unfortunately 953 doesn't have enough bandwidth to support your application at 60fps. I suggest reaching out to your sales representative as we have newer serializers and deserializers under NDA which could be used for your applciation.

    Best,

    Lucas

  • 0 in reply to Lucas Wolter
    Prodigy 50 points

    Lucas, thanks for your feedback. One more question regarding 935/953, from TI side, do you recommned sychronous mode that get ref clock from Deserializer? Is there any specific requirement regarding the whole channel or implements specific design?

    Regards,

    Xuan

  • 0 in reply to Xuan Chen
    TI__Mastermind 28450 points

    Hi Xuan,

    The tradeoff of using synchronous mode is that it keeps all serializers and the deserializer in the same clock domain, but if the back channel is lost then the forward channel will be lost too since it is created from the frequency of the back channel. I cannot recommend any specific mode as they are all functional and useful for different applications. To implement synchronous mode, you simply need to change the strap on the MODE pin on both the SER and the DES.

    Best,

    Lucas