The AMD LogiCORE™ IP 1G/2.5G Ethernet PCS/PMA or Serial Gigabit Media Independent Interface (SGMII) core provides a flexible solution for connection to an Ethernet Media Access Controller (MAC) or other custom logic. It supports two standards: the 1000BASE-X and 2500BASE-X Physical Coding Sublayer (PCS) and Physical Medium Attachment (PMA) operation, as defined in the IEEE 802.3-2008 standard and the Gigabit Media Independent Interface (GMII) to Serial-GMII (SGMII) bridge or SGMII to GMII bridge, as defined in the Serial-GMII Specification V1.7 (CISCO SYSTEMS, ENG-46158). Dynamic switching between 1000BASE-X and SGMII standards is also supported.