This object indicates the Current Clock State. freeRun(1) - Current clock state machine is not locked and run from the internal oscillator. rapidPhaseLock(2) - Current clock state machine is locked. finePhaseLock(3) - Current clock state machine is in pre-locking. holdover(4) - Current clock state machine is in holdover mode (due to loss of event). frequencyAcquisition(5) - Adaptive clock recovery is learning the frequency.