Calibration Unit for Calibrating an Oscillator, Oscillator Arrangement and Method for Calibrating an Oscillator

摘要

Disclosed is a calibration unit for calibrating an oscillator of a device comprises a counting and comparing unit and a control circuit. The counting and comparing unit is configured to determine a number of periods of a clock signal lying between a starting instance and an ending instance. Therein, the clock signal is generated by the oscillator. The counting and comparing unit is further configured to determine a deviation of the number of periods from a reference number. The control circuit is configured to adjust the oscillator depending on the deviation.

主权项

1. An oscillator arrangement comprising an oscillator of a USB device and a calibration unit for calibrating the oscillator, the calibration unit comprising:
a counting and comparing unit configured
to determine a number of periods of a clock signal, generated by the oscillator, between a starting instance and an ending instance, andto determine a deviation of the number of periods from a reference number; and a control circuit configured to adjust the oscillator depending on the deviation.