Does the Triple Speed Ethernet IP core support RGMII mode in Intel® Arria® 10, Cyclone®10 GX and Stratix®10 devices?

Due to core fabric GPIO architecture changes, Triple Speed Ethernet IP Core with RGMII mode has not been able to close timing in Intel® Quartus® Prime TimeQuest for Intel® Arria® 10, Cyclone®10 GX, and Stratix®10 devices. Therefore, Triple Speed Ethernet IP Core is not supported for RGMII Mode in Arria® 10, Cyclone®10 GX, and Stratix®10 devices as there are risks of hitting failures in the actual hardware.

There is no workaround for RGMII mode. Please use other interfaces such as GMII or SGMII with Triple Speed Ethernet IP core.