I have a real mystery for you. I have a module I got recently, but it’s behaving strangely. It doesn’t work at all at 3.3v. SPI communication is working, but the linkStatus is always LinkOFF, and the network lights remain off. I thought it might be a power spike causing a brownout, so added a bypass capacitor, but that hasn’t helped either ( I’m powering it through a bench power supply, with a max current set to 1A. Out of desperation I switched the voltage up a little and it worked. 3.7v was enough. Any idea how this happened, is it just a faulty part? Do you know of any scenarios that can cause this to happen.
Thanks for your help.