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Ethernet PHY DP83848CVV

Question asked by prasad.balmukund on Apr 4, 2012
Latest reply on Apr 5, 2012 by AMSN
I want to use DP83848CVV as Ethenet PHY with STM32F207ZET6 in RMII mode. In Schematics (STM3220G_EVAL),there is some resistor of 51 Ohm in between of  signals (RMII_REF_CLK,RMII_TX_EN,RMII_TX_D0,RMII_TX_D1,RMII_CRS_DV) connecting  Ethernet PHY & STM32. Are they mandatory??
Please share if any body having any idea.

Thanks In advance
Balmukund Prasad