Clock calibration method, device and system, storage medium and computer equipment

Abstract

The invention relates to a clock calibration method, device and system, a storage medium and computer equipment. The method is characterized by calculating the real-time clock frequency of an oscillation clock signal in a chip; determining whether the frequency difference of the real-time clock frequency and a preset target frequency is within a preset threshold range so that whether the oscillation clock signal in the chip reaches a preset precision requirement can be judged; and after the calibration of the clock signal in the chip is completed, outputting the clock signal satisfying the precision requirement and a frequency requirement through a internal phase-locked loop in the chip. The clock frequency requirements of different communication modes can be satisfied and a suitable rangeis wide. Besides, after clock calibration is completed, the phase-locked loop can be directly configured according to a corresponding post-frequency-division value, configuration information does notneed to be recalculated, and usage is convenient.

Description

technical field [0001] The present application relates to the technical field of chip testing, in particular to a clock calibration method, device, system, storage medium and computer equipment. Background technique [0002] A chip, also known as a microcircuit, refers to a silicon chip containing an integrated circuit, which is an important part of a computer or other electronic equipment. For chips containing sequential logic circuits, accurate clock signals are very important. [0003] In the prior art, a built-in phase-locked loop is usually used to provide a clock signal for the chip, that is, a phase-locked loop is set inside the chip, and the internal phase-locked loop is configured so that the phase-locked loop outputs a corresponding clock signal (clock calibration). However, the existing technology can only calibrate the communication mode of a specific frequency when performing clock calibration; moreover, the clock signals corresponding to different chips are di...

AI Technical Summary

Problems solved by technology

However, the existing technology can only calibrate the communication mode of a specific frequency when performing clock calibration; moreover, the clock signals corresponding to different chips are different, and the corresponding phase-locked loop configurations are also different. When multiple chips are used in combination, each It is necessary to calculate the phase-locked loop configuration of the chip every time, and the use process is cumbersome

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