The invention discloses a rapid
crystal oscillator starting circuit and a starting method thereof, and relates to the technical field of rapid starting of
crystal oscillator circuits, and the rapid
crystal oscillator starting circuit comprises a preliminary establishment module which is used for establishing a
crystal oscillator starting circuit, obtaining preliminary information of the
crystal oscillator starting circuit, setting preset parameters, and obtaining preset data; the
gain calculation and adjustment module is used for starting the
crystal oscillator starting circuit, gaining the crystal oscillator circuit, obtaining real-
time data in the gaining process, judging a
gain state according to the real-
time data, obtaining a judgment state, calculating a
gain adjustment value and adjusting the gain data according to the gain adjustment value; and a stability judgment labeling module. According to the invention, the circuit is established, the preliminary information is acquired, the preset parameters are set, the circuit is started, the gain is adjusted, the gain time is controlled, the gain stability is judged, the gain interference data is adjusted, and whether readjustment is needed is judged, so that efficient, stable and accurate control of the crystal oscillator circuit is realized, and the stability of the crystal oscillator circuit in the starting process is ensured.