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A kind of signal spread spectrum control method and system

A spread spectrum and frequency technology, applied in signal spread spectrum control method and system field, can solve the problems affecting the whole system work, loop instability, etc., achieve the effect of reducing design cost and improving stability

Active Publication Date: 2022-07-29
珠海昇生微电子有限责任公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The present invention provides a signal spread spectrum control method and system, which is used to solve the problem that most electronic systems in the prior art adopt the spread spectrum method of the clock oscillator generator, which leads to the instability of the loop and affects the work of the entire system

Method used

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  • A kind of signal spread spectrum control method and system
  • A kind of signal spread spectrum control method and system
  • A kind of signal spread spectrum control method and system

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Embodiment Construction

[0036] The technical solutions of the present invention will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific technical features in the embodiments are only descriptions of the technical solutions of the present invention, rather than limitations. In the case of no conflict , the embodiments of the present invention and the specific technical features in the embodiments may be combined with each other.

[0037] like figure 2 Shown is a flowchart of a signal spread spectrum control method in an embodiment of the present invention, and the method includes:

[0038] S20, obtain the center frequency, spread spectrum mode, spread spectrum depth, spread spectrum step size, and adjustment speed parameters configured by the user;

[0039] First of all, the method used in the present invention corresponds to image 3 shown in the spread spectrum function sch...

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Abstract

The invention discloses a signal spread spectrum control method and system. Based on the method provided by the invention, parameters such as center frequency, spread spectrum mode, spread spectrum depth, spread spectrum step size, adjustment speed and the like are configured in an automatic spread spectrum unit. Frequency adjustment and duty cycle calculation, and finally output the required center frequency and duty cycle, which realizes the digital spread spectrum before the interface PWM signal outputs a certain frequency signal, thus avoiding the spread spectrum at the clock oscillator generator at the clock source. , thereby reducing the design cost of the spread spectrum and improving the stability of the system.

Description

technical field [0001] The present application relates to the technical field of signal processing, and in particular, to a signal spread spectrum control method and system. Background technique [0002] With the development of technology, the clock frequency of digital signals is getting higher and higher, and the circuit system puts forward higher and higher requirements for elements such as signal establishment, hold time, and clock jitter. EMI, that is, electromagnetic interference, refers to the influence of the circuit system on the surrounding circuit system through conduction or radiation. EMI can cause the degradation of circuit performance and, in severe cases, may cause the entire system to fail. In practice, relevant agencies promulgate electromagnetic compatibility specifications to ensure that electronic products on the market meet the requirements of the specifications. [0003] The clock signal is often the signal with the highest frequency and the steepest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K7/08
CPCH03K7/08
Inventor 阳昕张益畅
Owner 珠海昇生微电子有限责任公司
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