MII: Medium Independent Interface 媒體獨立接口，也稱介質無關接口

RMII: Reduced MII 簡化媒體獨立接口

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GMII: Gigabit Medium Independent Interface 千兆媒體獨立接口

RGMII: Reduced GMII

SGMII: Serial Gigabit Media Independent Interface 串行千兆位媒質獨立接口

SGMII is serial GMII interface which uses only 4 lines to connect with MAC/SOC. When copper-side
link is established, SGMII will pass the copper-side link status (link, speed, duplex) to MAC side for
building the link. SGMII interface shares the same SerDes with fiber port.

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QSGMII：Quad serial Gigabit Medium Independent Interface 4路

PSGMII: Penta-Serial Gigabit Media Independent Interface 5路

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相關網口概念：

serdes:serialize/deserializer 串行器/解串器

總結

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