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MDIO_DATA vs pr1_MDIO_DATA

Ross Pimentel
Mastermind 23675 points

In the Sitara datasheet what exactly is the difference between MDIO_DATA and PR1_MDIO_DATA? Are they the same but MDIO_DATA is a dedicated pin whereas PR1_MDIO_DATA is a GPIO?

Same question for MDIO_CLK vs MDIO_MDCLK (GPO).

Thanks for the help!

Cheers,

Ross

  • 0
    TI__Guru**** 393215 points

    Hi Ross,

    The PRU-ICSS subsystem includes, besides others (AM335X TRM Rev. K section 4.1.1):

    • One Ethernet MII_RT module with two MII ports and configurable connections to PRUs
    • One MDIO Port

    These are separate and different from the CPSW Ethernet and are used for Industrial Ethernet protocols, e.g. EtherCAT. The PRU-ICSS MDIO signals are listed in Table 4-27 in the AM335X Datasheet Rev. G, the CPSW Ethernet MDIO signals are listed in Table 4-40.