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Can TCA9617B be used on an MDIO interface?

RD
Intellectual 280 points
Other Parts Discussed in Thread: TCA9617B

Hello,

Is it possible to use the TCA9617B device to buffer and voltage translate an MDIO interface (3.3V and 2.5V).

Thanks

Ro.

  • 0
    TI__Expert 5140 points
    Hi Ro,

    Thanks for the question, I can confirm that you can use MDIO interface with our I2C buffers as it is an open drain interface. Just keep in mind that the data is 2 bytes.

    Also MDIO requires a pull-up resistance of 1.5kohm to 10kohm, taking into account the total worst-case leakage current of 32 PHYs and one MAC.

    Make sure they are falling within our speed spec (400kHz max) as MDIO can go up to about 2.4MHz.

    Thanks,
    Siby
  • 0 in reply to Siby James
    Intellectual 280 points

    Hi Siby,

    Thanks for the response.

    Does TI have a faster similar buffer I could use on an MDIO interface?

    Thanks

    Ro