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IMXRT1050-EVK: Ethernet clock to PHY

Question asked by Felipe Neves on Dec 20, 2017
Latest reply on Dec 27, 2017 by Artur Petukhov



After setup my development environment with success on imxrt1050 evk, I started to port the tcp/ip (picoTCP) to my project, so write the enet driver was required, and I got the phy<->processor MII (MDIO/MDC) communication working and now I'm able to configure it. But when I read the link status register, even with cable connected it never report the link was up.

Loooking deeper on hardware ( in EVK schematic) I noted the phy XI pin (clock input) receives it from ENET_TX_CLK signal from processor, measuring with the oscilloscope I found no clock in this pin. Given this my question is, what is the correct ENET configuration to provide clock to enet phy in IMXRT1050-EVK?

Thank you in advance.