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TCA9543A: Enquiry on Application usage

Manikandan Ramasamy
Prodigy 90 points
Part Number: TCA9543A

Hi Team,

We are using the part TCA9543APWR in our design.

Our requirement is to connect same Slave module which is not having any slave ID configuration and attached the image for better understanding.

Is there any conflicts in the attached design?

From the Host side we are using single I2C bus only

Regards,
Manikandan Ramasamy.

  • 0
    Guru 293340 points

    There are conflicts between the first slave and any other enabled slaves.

    For three slaves with the same address, you need a switch with at least three channels.

  • 0
    Prodigy 130 points

    Hello Clemens Ladisch

    There are conflicts between the first slave and any other enabled slaves.For three slaves with the same address, you need a switch with at least three channels.

    Noted. 

    if we use second and third slave with one switch and other switch for first slave then no any conflicts between Second and Third slave Right ?

    Ex:

          I2C Switch1 Connected : 1st slave

          I2C Switch2 Connected : 2nd and 3rd Slave

  • 0 in reply to Vishal Mistry
    Guru 293340 points

    Yes, this will work. (But the two switches must not have the same address.)

  • 0 in reply to Clemens Ladisch
    TI__Mastermind 30076 points

    Hey Vishal,

    Please reach out if you have any further questions! 

    Thanks,

    Regards,

    Jack