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TCA4311A: TCA4311A both SCL/SDA_IN and SCL/SDA_OUT can be I2C Master?

user4979899
Expert 3080 points
Part Number: TCA4311A

TCA4311A can support Bidirectional means Both I2C SCL_IN/OUT and DATA_IN/OUT are Bidirectional?

 Is that means anyone of SCL/SDA_IN and SCL/SDA_OUT can be I2C Master?

  • 0
    TI__Guru 53575 points

    Hi Anne,

    Yes, both SDA and SCL lines are bidirectional allowing communication to and from either side of the device. Masters can be placed on either or both sides of this buffer.

    I2C is a bidirectional bus standard that allows not only Master to Slave communication, but also Slave to Master (sending data and ACKs). Because of this, bi-directionality is necessary even when only one Master is present on an I2C bus.

    Here's a link to an app note with more information on the interface:

    Understanding the I2C Bus

    Let me know if you have any more questions.

    Regards,

    Eric