Hi,
I'm using an AM3352 with an Ethernet PHY - KZS9021 from Micrel. Reading the PHY's datasheet it's showing the connection considering only 12 pins to the RGMII interface.
I saw other applications telling about using those 12 pins + 2 pins from MIIM interface (MDIO and MDC) on the Sitara for management interface between the STA and the PHY.
The question is, I'm trying to find out the functions and purpose of the MIIM interface on the IEEE 802.3. But unfortunately I did not understand it.
My main function with the ethernet port will be only for debbug information and faster coppy files from my hardware and my station. Will I need the benefits from MIIM interface? Is disposable?
I'm running out of GPIOs in my hardware, so this question is important since I wish to use those pins (MDIO and MDC) for other purposes..