18218479. FULLY DIGITAL DOMAIN INTEGRATED FREQUENCY MONITOR (NVIDIA Corporation)
FULLY DIGITAL DOMAIN INTEGRATED FREQUENCY MONITOR
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FULLY DIGITAL DOMAIN INTEGRATED FREQUENCY MONITOR
This abstract first appeared for US patent application 18218479 titled 'FULLY DIGITAL DOMAIN INTEGRATED FREQUENCY MONITOR
Original Abstract Submitted
Technologies directed to determine whether a frequency of a clock signal is outside a specified frequency range are described. One integrated circuit includes a signal generator circuit, a voltage divider circuit, and digital logic circuitry. The signal generator circuit generates phase signals from a clock signal. The voltage divider circuit converts a frequency of the clock signal to a voltage representing the frequency. The voltage divider circuit includes a first resistor and a first switched-capacitor structure to receive the phase signals. An average resistance of the first switched-capacitor structure is inversely proportional to the frequency of the clock signal. The digital logic circuitry can determine, using the voltage, whether the frequency is outside of a specified frequency range, and output an indication responsive to the frequency being outside the specified frequency range.
