This anomaly applies to IC Rev. Revision 2, build codes QDAA-G00.
Symptoms
The MISO pin may have spikes at the rising or falling edge of the PDN pin.
Conditions
The PDN pin toggles.
Consequences
The MISO pin may have a positive or negative spike that interferes with communication with peripheral devices sharing the MISO line on the SPI bus.
Workaround
Do not share the MISO line with other peripheral devices.