SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
The clock control includes circuitry to ensure that the MOSC is running at the appropriate frequency. The circuit monitors the MOSC frequency and signals if the frequency is outside of the allowable band of attached crystals.
The detection circuit is enabled using the CVAL bit in the Main Oscillator Control (MOSCCTL) register. If this circuit is enabled and detects an error, and if the MOSCIM bit in the MOSCCTL register is clear, then the following sequence is performed by the hardware: