Signal spread spectrum control method and system

A spread spectrum and signal technology, applied in the field of signal processing, can solve problems such as unstable loops and affecting the work of the entire system, and achieve the effect of improving stability and reducing design costs

Active Publication Date: 2019-02-05
珠海昇生微电子有限责任公司
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  • Abstract
  • Description
  • 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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  • Signal spread spectrum control method and system
  • Signal spread spectrum control method and system
  • 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. , the embodiments of the present invention and specific technical features in the embodiments may be combined with each other.

[0037] Such as figure 2 Shown is a flow chart of a signal spread spectrum control method in an embodiment of the present invention, the method comprising:

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

[0039] First of all, the method used in the present invention corresponds to image 3 shown in the spread spectrum functional schematic diagram, in image 3 It con...

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Abstract

The invention discloses a signal spread spectrum control method and system. Based on the method provided by the invention, center frequency and a duty ratio meeting requirements are output at last byconfiguring the center frequency, a spread spectrum mode, a spread spectrum depth, a spread spectrum step length, adjustment speed and other parameters in an automatic spread spectrum unit, digital spread spectrum is performed before an interface PWM signal outputs a certain frequency signal, thereby avoiding performing spread spectrum on a clock oscillation generator at the clock source, so thatthe design cost of the spread spectrum is reduced, and the stability of the system is improved.

Description

technical field [0001] The present application relates to the technical field of signal processing, and in particular to a signal spreading 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 impact of the circuit system on the surrounding circuit system through conduction or radiation. EMI will cause the degradation of circuit performance, and in severe cases, may lead to the failure of the entire system. In actual operation, relevant organizations promulgate electromagnetic compatibility specifications to ensure that electronic products on the market meet the specification requirements. [0003] The clock signal is often the signal with the highest frequency and the ste...

Claims

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Application Information

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Patent Type & Authority Applications(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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