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Clock signal distribution with second order nodes: Design hints.

José Roberto C Piqueira1, Antonio Carlos B de Godoi1

  • 1Escola Politécnica da Universidade de São Paulo, Avenida Prof. Luciano Gualberto, travessa 3, n. 158, 05508-900, São Paulo, SP, Brazil.

ISA Transactions
|January 23, 2021
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Summary

This study offers guidance on designing clock distribution networks by comparing different topologies and parameters. It considers nonlinear effects to help select the optimal solution for specific applications, aiding system designers.

Keywords:
Clock signalFrequency errorMaster–slaveMutual synchronizationPhase error

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Area of Science:

  • Electrical Engineering
  • Computer Engineering
  • Network Synchronization

Background:

  • Clock distribution networks are crucial for synchronizing electronic tasks in digital systems.
  • Accurate timekeeping is essential for computational and instrumentation applications.
  • Existing research often focuses on linear coupling, neglecting nonlinear effects in phase-locked loops.

Purpose of the Study:

  • To provide an overview and comparison of clock distribution network topologies and parameters.
  • To incorporate nonlinear effects into the analysis of clock distribution systems.
  • To offer practical guidance for selecting appropriate clock distribution solutions based on application requirements.

Main Methods:

  • Mathematical analysis focusing on linear coupling factors.
  • Consideration of nonlinear effects in phase-locked loop nodes.
  • Comparative analysis of different network architectures and parameters.

Main Results:

  • Identification of performance characteristics for various network architectures.
  • Evaluation of solutions considering both linear and nonlinear factors.
  • Development of rules of thumb for system design.

Conclusions:

  • Nonlinear effects are important for designing and operating clock distribution networks.
  • Matching specific clock distribution solutions to application needs is feasible.
  • The study provides valuable insights for engineers designing synchronization systems.