Monocrystal oscillator electronic device and method for determining frequency division coefficient

Abstract

The invention relates to the technical field of electronic devices, in particular to a monocrystal oscillator electronic device and a method for determining frequency division coefficient. The device comprises at least two functional units which need different clock signals, a crystal oscillator and at least one adjustment circuit, wherein the crystal oscillator is used for generating a first clock signal and inputting the first clock signal to the functional unit which needs the first clock signal; each adjustment circuit comprises at least two phase-locked loops connected in cascade, and isused for adjusting the frequency and phase of the first clock signal step by step; after the adjustment, the first clock signal of which the frequency difference between the required clock signal andthe first clock signal in different clock signals exceeds the set value, is obtained; and the adjusted clock signal is input to the functional unit which needs the adjusted clock signal. The invention can meet the clock signal requirements of multiple functional units by using only one crystal oscillator, and has the advantages of simple structure, small size and low cost.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a single crystal oscillator electronic equipment and a method for determining a frequency division coefficient. Background technique [0002] The crystal oscillator is referred to as the crystal oscillator, and its function is to generate the original clock signal. After the frequency multiplication or frequency division of the frequency generator, the original clock signal becomes the clock signal of various frequencies required by the electronic equipment. The higher the clock signal frequency, the higher the signal quality requirements and the greater the energy consumption. Compared with the same product, high frequency is equivalent to high performance. [0003] Currently, in electronic equipment that requires a crystal oscillator, since different functional units in the electronic equipment have different requirements on clock signal frequencies, multiple cryst...

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Problems solved by technology

[0010] Embodiments of the present invention provide a single-crystal oscillator electronic device and a method for determining the frequency division coefficient, so as to overcome the problem of complicated device structure caused by the use of multiple crystal oscillators in existing electronic devices

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