LAN9303 - RMII Interface and Software

I need to interface the LAN9303 to add a two-port Ethernet switch to a Cortex™-M4 device. Are there some recommendations to use it with a reduced media-independent interface (RMII) interface?

For the RMII interface (industry standard), there are no particular recommendations, except in chapter 9.1.3, "Port 0 RMII PHY Mode" of the datasheet. We recommend using the evaluation board with Part Number: EVB9303.

On the software side, do you provide some stack?

We do not provide a stack because the MAC portion resides in your Cortex device's controller. A TCP/IP Ethernet Stack needs to come from the controller side.

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