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.

© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.