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USB-2-MDIO: Details on MDIO Implementation

Part Number: USB-2-MDIO

Hi Team,

Since the source code of the USB-2-MDIO tool is not available for reference, I would like to get some guidance on how this was implemented.

My customer is specifically trying to understand what peripherals on the MSP430 were use to generate the MDIO interface. Does it just use the I2C interface or are there additional complexities dealing with the differences between I2C and MDIO that you had to account for?

Any advice you can provide would be super helpful!

Thanks,
Mitchell

  • Hi Mitchell,

    USB-2-MDIO implements the MDIO-MDC communication protocol, also called SMI, on two of the GPIOs. The IEEE ethernet standard defines the specification on how SMI should be implemented. The I2C of MSP430 is not used by USB-2-MDIO software.

    -Regards

    Aniruddha