[133] QSPI: Degraded radio performance with QSPI

This anomaly applies to IC Rev. Rev 1, build codes CLAA-D00, QKAA-D00.

Domains

Application

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.