Does DM648 EVM support Gigabit Ethernet? What about Jumbo Packets?
Yes, the DM648 EVM has a PHY device that supports Gigabit Ethernet speeds, and the NDK device driver provides support for Gigabit Ethernet links. However, the hardware does not support Jumbo Frames (typically around 9000 bytes but can assume any value), since the DM648 EMAC peripheral has a limitation to receive frames up to 2047 bytes (headers included). This is still above the standard value of 1518 bytes. Even so, all NDK releases can transmit regular sized packets faster than 100 Mbps. For additional information please refer to the 3 Port Switch Ethernet Subsystem User’s Guide (spruf57).