Frequency generating device and operation method thereof

An operation method of a frequency generating device, comprising:

• generating, by a processor circuit of the frequency generating device, a control voltage;
• reading, by the processor circuit, a frequency aging rate value and a control voltage slope of an oscillator circuit of the frequency generating device from the oscillator circuit;
• calculating, by the processor circuit, a control voltage regulation rate value corresponding to the frequency aging rate value and the control voltage slope;
• compensating, by the processor circuit, the control voltage based on the control voltage regulation rate value;
• generating, by the oscillator circuit, a clock signal;
• and
• adjusting, by the oscillator circuit, a clock frequency of the clock signal according to the control voltage;
• wherein the frequency aging rate value is related to a predicted frequency change rate of the clock signal at an expected time point, and the control voltage slope represents a slope of a relationship curve of the control voltage to the clock frequency.

An operation method of a frequency generating device, comprising:

• generating, by a processor circuit of the frequency generating device, a control voltage;
• reading, by the processor circuit, a control voltage regulation rate value of an oscillator circuit of the frequency generating device from the oscillator circuit;
• compensating, by the processor circuit, the control voltage based on the control voltage regulation rate value;
• generating, by the oscillator circuit, a clock signal;
• adjusting, by the oscillator circuit, a clock frequency of the clock signal according to the control voltage;
• recording, by the processor circuit, a current voltage level of the control voltage before the oscillator circuit is powered down;
• and
• using, by the processor circuit, the current voltage level as an initial control voltage level after the oscillator circuit is powered back on.