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TS5MP645: Can I short 6 TS5MP645 outputs, control using /OE and connect to one micro controller MIPI interface ?

Anil Sudhakaran
Expert 1020 points
Part Number: TS5MP645

Hi,

I have an application in which 12 camera sensor outputs are to be read  to a Microcontroller. Sensors are having MIPI outputs.

I  am using 6 numbers of TS5MP645YFPR , shorting its outputs, controlling /OE and SEL of  each of these 6 MIPI MUX from micro controller.  MIPI clock speed is around 12 Mhz.  

Could you please confirm whether this  scheme will work fine ?

Block diagram is below.

Thanks & Regards,

Anil

  • 0
    TI__Mastermind 43536 points

    Hi Anil,

    The biggest consideration if you are trying to do something like this, is that you have to make sure that only one MIPI switch is active at a time, if two switches are active at the same time then you could have data-corruption issues.

    Also, by shorting all the outputs together like that you also increase the capacitive loading of the output of the switch. The On-Capacitance and Off-Capacitance of each switch is the same at 1.5pF, so the capacitive loading at the output of the switch would be 9pF. At 12MHz though I don't see this being a concern, but this configuration will decrease maximum system bandwidth.

    If you take those considerations into account during the design process; there shouldn't be an issue with the application you have presented.

    Best,

    Parker Dodson

  • 0 in reply to Parker Dodson
    Expert 1020 points

    Thanks Parker Dodson for the quick and detailed reply. 

    Will take care of both the points you mentioned and go ahead with this configuration.

    Regards,

    Anil