Here's an issue from the customer may need your help:
The customer use the GD32F450 with DP83848K to design the network portion. With RMII mode, the MCU provides a 50MHz clock, the MCU can communicate with the 83848 PHY properly and read the PHY value. The initialization is complete and the green and yellow lights on the network interface are on. While TCP/UDP connections to the host cannot be established and pings cannot be made. What could be the possible reason?
Could you help check this case? Thanks.