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SabreSD ENET_REF_CLK AC coupling

Question asked by mahi on Mar 24, 2015
Latest reply on Mar 24, 2015 by igorpadykov

Hi community,

 

is there another reason for AC coupling at the ENET_REF_CLK input in SabreSD-design than adjusting the voltage levels?

 

In my design I want to use 2.5V for all the Ethernet-related stuff (NVCC_ENET, NVCC_RGMII and VDDIO of the PHY) so connecting ENET_REF_CLK directly (only with a series resistor at the PHY's output) should be OK - or did I miss something?

 

 

Best regards,

Martin

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