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Clock calibration circuit, clock calibration method and related equipment

A clock calibration and clock technology, applied in the field of communication, can solve the problem of high design cost of clock chips and achieve the effect of reducing design cost

Pending Publication Date: 2021-11-12
VIVO MOBILE COMM CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] This application aims to provide a clock calibration circuit, clock calibration method and related equipment, which can solve the problem of high design cost of clock chips in related technologies

Method used

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  • Clock calibration circuit, clock calibration method and related equipment
  • Clock calibration circuit, clock calibration method and related equipment
  • Clock calibration circuit, clock calibration method and related equipment

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0029] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," et...

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Abstract

The invention discloses a clock calibration circuit, a clock calibration method and related equipment. The clock calibration circuit comprises a real-time clock module, an oscillation module, a clock extraction module, a communication module and a control module, wherein a first end of the clock extraction module is electrically connected with the communication module; the control module is electrically connected with a second end of the clock extraction module, the oscillation module and the real-time clock module; the oscillation module is also electrically connected with the real-time clock module; the clock extraction module is used for acquiring a first clock signal of the communication module; and when an error between clock frequency of the first clock signal and the clock frequency of a second clock signal corresponding to the oscillation module exceeds a preset range, the control module calibrates the second clock signal based on the first clock signal, and updates the real-time clock module based on the calibrated second clock signal.

Description

technical field [0001] The present application belongs to the technical field of communication, and in particular relates to a clock calibration circuit, a clock calibration method and related equipment. Background technique [0002] When the terminal is turned off, the real-time clock module of the terminal needs to balance high clock accuracy and extremely low power consumption at the same time. Among them, the clock chip where the real-time clock module is located can be integrated with the oscillator module to generate the clock required for shutdown to achieve the purpose of extremely low power consumption; and the clock chip where the real-time clock The clock source calibrates the system clock and achieves the purpose of improving the clock accuracy of the real-time clock module. However, integrating a dedicated clock source on the clock chip will increase the design cost of the clock chip. [0003] It can be seen that in the related art, the clock chip has the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/12G06F1/14
CPCG06F1/12G06F1/14
Inventor 何军
Owner VIVO MOBILE COMM CO LTD
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