Serial Gigabit Media Independent Interface
- Serial Gigabit Media Independent Interface
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.
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
References :
* [http://www.angelfire.com/electronic2/sharads/protocols/MII_Protocols/sgmii.pdf Serial-GMII Specification Revision 1.7 (ENG-46158)]
* [http://www.parthus.com/products/platforms/sgmii.php CEVA implementation documentation]
* [http://www.altera.com/products/ip/ampp/morethanip/images/morethanip_sgmi.pdf Altera-compatible components using SGMII, distributed by MorethanIP.com]
* [http://www.xilinx.com/ipcenter/catalog/logicore/docs/gig_eth_pcs_pma.pdf Xilinx GMII to SGMII bridge IP Core]
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