Serial Gigabit Media Independent Interface

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The Serial Gigabit Media Independent Interface (SGMII) is a sequel of MII, a standard interface used to connect an Ethernet MAC-block to a PHY. It is used for Gigabit Ethernet (contrary to Ethernet 10/100 for MII). It differs from GMII by its low-power and low pin count serial interface (commonly referred to as a SerDes). To carry frame data and link rate information between a 10/100/1000 PHY and an Ethernet MAC, SGMII uses a differential pair for data signals and for clocking signals, with both being present in each direction (i.e., transmit and receive), giving 8 signal lines in total.

[edit] See also

• MII Media Independent Interface, the original standard for Ethernet 10/100
• GMII Gigabit Media Independent Interface, the original standard for Ethernet Gigabit
• RGMII Reduced Gigabit Media Independent Interface
• Gigabit Ethernet
• Media Access Control MAC

[edit] References :

• Serial-GMII Specification Revision 1.7 (ENG-46158)
• CEVA implementation documentation
• Altera-compatible components using SGMII, distributed by MorethanIP.com
• Xilinx GMII to SGMII bridge IP Core