Chip clock circuit and control method thereof

Abstract

The invention provides a chip clock circuit and a control method thereof. The chip clock circuit comprises a plurality of clocks, a clock switching module and a control module, the clocks comprise a logic OR module, a clock generation module and a trigger module, clock clk signals generated by the clocks are obtained through the input end of the clock switching module, and one clock is selected asa main clock to be output; and the control module monitors the state of each clock and controls the closing or opening of each clock. The state of a chip clock signal is monitored in real time through the control module; according to the real-time monitoring result, the clock signals are switched in time, high reliability of the clock signals of the chip is ensured, the chip is in a stable and reliable working state, the chip system can be ensured to run at a low power consumption level through a computer readable storage program, one more clock signal can be provided for the system selectively, and the flexibility of the clock of the chip system is improved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a chip clock circuit and a control method thereof. Background technique [0002] The clock is the heart of the circuit, and the stability and reliability of the clock is the basis for the stable operation of the circuit. Almost all digital systems process signals according to the clock beat by beat, and each part of the system is also done according to the beat. To make the circuit The unified beat of each part of the circuit requires one or more clock signals. The final function failure of many circuits or the performance cannot meet the original design requirements are due to the loss or abnormality of the clock, which brings great losses to the circuit. [0003] The technology commonly used in the prior art to solve this problem is clock backup, that is, two crystal oscillators are set in a communication system at the same time, and the two crystal oscillators are ...

AI Technical Summary

Problems solved by technology

[0004] However, this clock backup method needs to keep both clocks in the working state, but the failure rate of the clock is low, so one clock will be in an invalid working state for a long time, wasting a lot of power consumption

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