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LSF0102: MDC and MDIO application question

Oliver Lin
Expert 4475 points
Part Number: LSF0102
Other Parts Discussed in Thread: TXB0102, , TXS0102

Hi team,

Customer is asking about our device can fit the request as below capture?

It looks like max BW is 50MHz, TXB0102 is not able to support this. If the team has better suggestion on this, please share to us, thank you.

MDC is uni-direction for CLK

MDIO is bi-direction for SDA

  • 0
    Guru 317000 points

    TXB translators do not work with the MDIO pull-up resistor.

    The LSF0102 might work, if you use strong enough pull-up resistors, which requires high drive strength from both MAC and PHY.

    It might be possible to use the TXS0102. Is your MAC able to reduce the MDC frequency?