It tested by DP83848 RMII with external 50MHz OSC PHY mode
if you want use another PHY IC please modify Libraries\STM32F2x7_ETH_Driver\inc\stm32f2x7_eth_conf.h
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2086 bbd45198-f89e-11dd-88c7-29a3b14d5316