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Altera_Forum
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17 years ago

Phy Input Clock DP83848C PHYTER

Hi , I am using Altera CYCLONE III ,I have implemented NIOS II + Onchip memory + SSRAM + Custom MAC (RMII Mode).I want to configure the PHY to RMII Mode.For that I think I have to connect 50 M...
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Altera_Forum
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17 years ago

It looks like you can't change the oscillator frequency on that board, wich measn that you can't use the phy in RMII mode.

A solution may be to convert the signals from RMII to MII inside the FPGA between the custom MAC and the Phy, or to modify the Mac so that it can run in RMII mode.