SPRUIS4E March 2022 – January 2024
The J721E EVM uses the 138-pin QFN package, designated with the XMK suffix that supports only the SGMII interface.
The VC8514 device includes three external PHY address pins, PHYADD [4:2] to allow control of multiple PHY devices on a system board sharing a common management bus. These pins set the most significant bits of the PHY address port map. The lower two bits of the address for each port are derived from the physical address of the port (0 to 3) and the setting of the PHY address reversal bit in register 20E1, bit 9.