$ 0 0 Quote: Originally Posted by JensM Hi DangHo, please have a look at P11.5. There you have the GETH_GREFCLK (Gigabit Reference Clock input for RGMII (125 MHz high precission)). Regards, Jens Hi Jens, After adding the clock on P11.5, my issue can be solved now. Thanks for your support. I close this topic here.. Thanks all for your support, Dang Ho