Bought another one, since they're pretty cheap, and it would help me diagnose.
This one doesn't seem to exhibit the problem when pulling MAX_RST high, but still fails the same way (SPI short test passes, SPI long test fails). The troubleshooting guide seems to indicate this is due to a bad crystal oscillator, but it seems unlikely I got two bad units with the exact same defect.
This one doesn't seem to exhibit the problem when pulling MAX_RST high, but still fails the same way (SPI short test passes, SPI long test fails). The troubleshooting guide seems to indicate this is due to a bad crystal oscillator, but it seems unlikely I got two bad units with the exact same defect.