Switching the Standard Using MDIO - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

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16.2 English

The 1000BASE-X or 1G SGMII standard of the core can be switched at any time by writing to the Dynamic Switching Register 17 (see Configuration and Status Vectors). Following completion of this write, the MDIO management registers immediately switch.