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