I'm adding Power-Down mode to my Listen Mode implementation, and have come across some unexpected behavior.
I keep the chip in Power-Down, with the field detector set to automatic, and then see EON when a field is detected, as expected. The first time this happens, it behaves as expected (see first screenshot): the osc_ok bit was set automatically upon EON, then I set en and rx_en, and ~1ms millisecond later, the IRQ comes in.
But the next time, 100-300ms after the previous emulation, it doesn't behave the same way. The osc_ok bit is set after EON, then I set en and rx_en, but the IRQ never comes in. This all the same logic as the previous cycle - so EON is definitely not masked, and should be coming in after ~1ms. Is there some logic/behavior here I'm missing?
