So, I have hardware-related question.
Currently I developing the board with W5500. Circuit is the same as in reference design. Differences are:
- SI-60062-F used for RJ-45 with magnetics
- 10nf as series capacitors in RD+/RD-
- by mistake I mounted 13k bias resistor instead of 12.4k at EXRES1 pin.
After power on the chip starts normally. Firmware initialization done ok. But after few minutes of operation suddenly W5500 died completely. Now when reading data via SPI, the MISO signal is always 0. At TOCAP and 1V2O measured voltage circa 1.7V. No sign of overheat before and after though.
So, my question is whether the 13k resistor at EXRES1 can be the cause. Or any other ideas?
Thanks for any input