Computer readable storage medium, quick-start clock system and control method thereof

A quick-start clock system, comprising:

• a digital subsidiary circuit, configured to output a digital control value;
• a phase-locked loop, comprising a programmable voltage-controlled oscillator circuit and a frequency dividing circuit, wherein the programmable voltage-controlled oscillator circuit and the frequency dividing circuit are connected to the digital subsidiary circuit, and the frequency dividing circuit is connected to the programmable voltage-controlled oscillator circuit, the programmable voltage-controlled oscillator circuit is configured to obtain the digital control value output by the digital subsidiary circuit, and output a clock signal according to the digital control value, the frequency dividing circuit is configured to perform a frequency dividing operation on the clock signal output by the programmable voltage- controlled oscillator circuit;
• and,
• a crystal oscillator circuit connected to the phase-locked loop, comprising a crystal and an oscillation injecting circuit connected to the crystal, wherein the oscillation injecting circuit is configured to convert the clock signal performed with the frequency dividing operation to a co-frequency fully differential signal, and inject the co-frequency fully differential signal into the crystal.