A Dynamically Configurable High-Precision and High-Reliability Clock Network

Abstract

The invention discloses a dynamically configurable high-precision and high-reliability clock network. The network comprises multiple several network units. All the network units form a clock network with clockwise end-to-end links according to a daisy chain annular topological structure. Wherein the clock reference flow is the clock reference of each clock unit and is selected from the local reference and the external input reference of the network unit, and the clock reference output by the previous-stage network unit is used as the external input clock reference of the next-stage network unit; wherein the configuration information flow is a configuration information channel of each network unit, and the configuration information flow is clockwise and sequentially connected in series to form a ring topology structure according to the daisy chain, so that the configuration information flow traverses the whole clock network according to a ring sequence. According to the invention, the problem that the synchronization precision is reduced due to aging of the clock device can be eliminated through remote configuration, and the working time of the clock network is greatly prolonged.

Description

technical field [0001] The invention relates to a dynamically configurable clock network, which is used for building a clock system of a digital circuit with high reliability, long life and high stability. [0002] technical background [0003] At present, the fully synchronous clock network of general digital circuits is constructed by isolated clock units, and the clock network is designed as a dedicated clock network according to specific requirements. The disadvantage is that the clock network itself is fixed and cannot be expanded, and its fault tolerance is poor. The more complex the synchronization system, the more corresponding synchronization units, the greater the development cost to eliminate the synchronization deviation of the entire network, and it is difficult to standardize. [0004] In the use of the clock network, with the passage of time, the aging of the clock components, the performance degradation, the synchronization accuracy will continue to decline, ...

AI Technical Summary

Problems solved by technology

[0008] The problem solved by the technology of the present invention is: various clock synchronization deviations caused by device delay and system noise. Within the required range, solve the unstable operation of the circuit due to poor clock synchronization accuracy; the present invention can eliminate the problem of decreased synchronization accuracy due to aging of the clock device through remote configuration, and greatly extend the working time of the clock network; the solution of the present invention The clock unit is not independent, the clock network parameters cannot be configured, and the scalability and maintainability of the clock network are poor

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