SGMII interface standard

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SGMIIusestwodatasignalsandtwoclocksignalstoconveyframedataandlinkrateinformationbetweena10/100/1000PHYandanEthernetMAC.Thedatasignalsoperateat1.25Gbaudandtheclocksoperateat625MHz(aDDRinterface).Duetothespeedofoperation,eachofthesesignalsisrealizedasadifferentialpairthusprovidingsignalintegritywhileminimizingsystemnoise.