Reduced Media Independent Interface (RMII)

Documentation

• Reduced Media Independent Interface

Device Family Support

• Spartan-3
• Virtex-4 FX
• Virtex-4 LX
• Virtex-4 SX
• Virtex-II
• Virtex-II Pro

The MII to RMII LogiCORE is a "shim" core which converts a traditional 16-pin Media Independent Interface (MII) on a Xilinx 10/100 Ethernet MAC core to a a 6-pin Reduced Media Independent Interface (RMII) interface, allowing the MAC to connect to RMII compliant PHYs. A fixed 50 MHz reference clock synchronizes the MII_to_RMII with both interfaces.

Key Features

• Option to specify fixed 10 or 100 Mbit per second throughput
•  Automatic detection of Receive side throughput 
• Fixed clock frequency of 50 MHz Designed to RMII Consortium specification 
• Free core provided with the Embedded Development Kit (EDK)