OSCILLATOR MONITORING CIRCUITS FOR DIFFERENT OSCILLATOR DOMAINS

Clock monitors for circuits having a plurality of oscillators. The clock monitors produce an error indication when one oscillator is determined to be outside of a desired operating range or beyond a defined threshold with respect to a second oscillator. The clock monitors include a synchronizer conf...

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Hauptverfasser: Ferrer, Florencia, Intile, Lucas, Cesaretti, Juan Manuel, Rigoni, Nicolás
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creator Ferrer, Florencia
Intile, Lucas
Cesaretti, Juan Manuel
Rigoni, Nicolás
description Clock monitors for circuits having a plurality of oscillators. The clock monitors produce an error indication when one oscillator is determined to be outside of a desired operating range or beyond a defined threshold with respect to a second oscillator. The clock monitors include a synchronizer configured to receive a clock signal from a first oscillator of the plurality of oscillators and synchronize the received clock signal with a second oscillator and to produce a synchronized clock signal. The clock monitors can include a counter configured to produce a count value based on synchronized clock signal. The clock monitors include comparison circuitry configured to receive the count value and produce an error indication when the count value is outside a predetermined range. The clock monitors may be used to ensure correct clock operation for different transition scenarios, e.g., turning on or off a certain clock or power domain.
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subjects AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER
ELECTRICITY
PULSE TECHNIQUE
title OSCILLATOR MONITORING CIRCUITS FOR DIFFERENT OSCILLATOR DOMAINS
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