It is a standardized connector used mainly for Ethernet networking. RJ45 connectors are designed to hold up to eight wires in a specific pattern, helping to maintain signal integrity and compatibility ...
RJ45 pin 7 (TX_D4+): Pin 10 TD_A_P of DP83867E 8. RJ45 pin 8 (TX_D4-): Pin 11 TD_A_N of DP83867E The MDI pair signal wiring of the evaluation board seems to be different from the standard connection ...