My device was working fine then quit though the other 3 devices on the same SPI bus work fine. We thought the problem was because MISO had been shorted to ground and so we replaced the device. I wonder if our voltages are too low.
Vin 3.1
VDD_X 1.8
I/O_1 1.6
I/O_2 1.6
Here's a picture of the schematic, hope you can see it.
Thanks,
jh
