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Altera_Forum
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14 years ago

Ethernet link speed auto detection

Hi I have a custom board with a ethernet PHY connected to the FPGA using RGMII. I am using triple speed ethernet and iniche. I do not have the signals set_10 and set_1000 from the PHY. I can...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If the PHY's LED pins are connected to the FPGA then you can detect the link state and speed directly, and trigger an interrupt on the CPU in case of speed change. If not then the only solution is to regularly poll the MDIO registers and reconfigure the MAC, as you are doing right now.