Since phase-locked loops (PLLs) were conceived by Bellescize in 1932, their presence has become almost mandatory in any\ntelecommunication device or network, being the essential element to recover frequency and phase information. As the technology\ndeveloped, PLL appeared in several applications, such as, dense communication networks, smart grids, electronic instrumentation,\ncomputational clusters, and integrated circuits. In all of these practical cases, isolated or networked PLLs are responsible for\nrecovering the correct time basis and synchronizing the processes. According to the application needs, different clock distribution\nstrategies were developed, with the master-slave being the simplest and most used choice. Considering that the master clock is\nobtained from a stable periodic oscillator, two topologies are studied: one-way, not considering clock feedback; and two-way\nmaster-slave, with the slave nodes providing clock feedback to the master. Here, these two cases are studied by using simulation\nstrategies, presenting results about the clock signal recovery process in the presence of disturbances, indicating that master-slave\nclock distribution networks can be useful for networks with few nodes and a stable master oscillator with the one-way topology\npresenting better results than the two-way arrangement.
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