This anomaly applies to Revision 1, build codes CLAA-D00, QKAA-D00.
Symptoms
Degraded radio performance during QSPI communication:
- Reduced RX sensitivity during reception.
- Reduced modulation gain during transmission.
Conditions
When radio is receiving or transmitting while QSPI is reading or writing.
Consequences
Radio performance is severely degraded.
Workaround
Use one of the following:
- Use VDD voltage between 1.7 V and 2.0 V to limit the degradation of RX sensitivity to 3 dB across the channels.
- Ensure that QSPI and radio are not operating concurrently.