Good morning,
I have a 1Gbps ethernet connection available on my board. When my board is stand alone, I see the MAC RGMII TX clock at 125 MHz and PHY RGMII TX clock at 2.5 MHz.
Once my board is connected to another board via ethernet, then 1Gbps link is established and I see both clocks at 125 MHz.
Is there any feature in the PHY, even if I configure the PHY to RGMII 1Gbps, if there is no link then it keeps the PHY Tx clock at 2.5 MHz?
How this link establish process happening in the PHY?
Best regards.
Onur