[20] CLOCK: RADIO payload is not transmitted

nRF54LM20A Revision 1 Errata

This anomaly applies to Revision 1, build code PAAA-B00.

It was inherited from the previous SoC revision Engineering B.

Symptoms

Preamble is correctly transmitted but all following payloads are not transmitted.

Conditions

CPU and peripherals in MCU power domain are sleeping when RADIO starts transmitting.

Consequences

Transmission is corrupted.

Workaround

Before triggering RADIO.TASKS_RXEN or RADIO.TASKS_TXEN, trigger POWER.TASKS_CONSTLAT.

When disabling RADIO, trigger POWER.TASKS_LOWPWR.

The workaround might increase current consumption.