This was just an example, I want to know how I can enter e.g. Test Mode 3, the transmit jitter test, or Test Mode 4 the transmitter disortion test…
I know how to select the different operation mode using the bits 5~3 in the PHYCFGR. The unknown how to tell the PHY to enter “test mode” / generate the test patterns.
As far as I know there are a couple of standardised tests for ethernet compliance.
Maybe I got the whole thing wrong. I was assuming that I bring the w5500-phy to “output” a test pattern (e.g. by writting some registers) and measure it with the oscilloscope.
Is there another way, e.g. to directly stimulate the PHY by sending some signales directly on the wires ?