Using I2C Interface for MDIO (SMI / MIIM)

[mvonahnen]

Posted on September 15, 2014 at 20:49

I have an application where I need to manage a SW that my micro does not have a data interface on.  The switch uses MDIO as the interface for management (not just for PHY configuration).  Has anybody used a I2C port to mimic a MDIO interface (for micro parts that don't have a Ethernet interface)?

#i2c-stm32-mdio-smi-miim

[Tesla DeLorean]

Posted on September 15, 2014 at 21:08

I'm hard pressed to see ST's I2C model being remotely helpful here. You could try just doing a bit-banged interface, or if the SPI or USART has a single wire or smartcard type mode.