Hi
The RMII clock source can be EXTAL clock or ENET_1588_CLKIN selected via SIM_SOPT2[RMIISRC] selection.
So, the EXTAL pin or ENET_1588_CLKIN pin instead of RMII_REF_CLK pin's function.
Customer need consider to use EXTAL pin or ENET_1588_CLKIN pin.
Wish it helps.
Have a great day,
Ma Hui
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