Hi
I am using the DP83822EVM together with a STM32H7-DK and has configured DP83822EVM via bootstrapping. Reading the registers over MDIO works and the PHY is configured as RMII master with a clock output on COL pin (pin 29). I am using the HAL driver in the STM32H7-DK for Ethernet communication.
I have not gotten it to work though. When i measure the output clock signal it is not behaving as expected.The clock signal has the correct frequency, 50 MHz, but the signal looks like a sine wave and goes from 1V to 2.4V. The behaviour I am expecting is a square wave that goes from 0V to 3.3V. Should the clock signal look like this?
I have also measured the clock signal on the default pin for clock output, RX_D3, pin 7, but that generates the same strange clock signal.