[49] RADIO: First bits of on-air packet are not correct

This anomaly applies to Engineering A, build code QFAA-Axx.

Symptoms

First bits of the PAYLOAD field in the RADIO on-air packet are not correct.

Conditions

PCNF0.S1LEN is 4 or less and PCNF0.S1INCL is 1. RADIO is transmitting using 1 Mbps, 2 Mbps, or 4 Mbps data rate. The MCU power domain is powered down.

Consequences

Transmission is incorrect.

Workaround

If S1LEN is not 0, apply the following workaround:


*(volatile uint32_t *) 0x5008C58C = 1;

Alternatively, use Constant Latency sub-power mode before starting the radio. If S1LEN is 0, apply the following workaround: Set S1 field equal to first byte in package.