Patent ID: 8732510
Filing Date: 2014-05-20
Classification: G06F,H03K

Abstract:
1. A digital frequency generator that produces an output frequency relative to a reference clock, a device including: a reference clock signal having cycles, an accumulator stage coupled to the reference clock, that iteratively signals a terminal condition signal and a remainder signal after a number of cycles that it would take to reach an overflow (or underflow) condition by repeatedly accumulating a positive (or negative) numerator and overflowing (or underflowing) an accumulator that has a range from zero to a denominator minus one; a selector, coupled to the terminal condition signal and the remainder signal of the accumulator stage, including a state machine and an output section, a digital to analog converter (abbreviated DAC) coupled to the value signals, wherein the DAC outputs an analog signal responsive the value signal; a filter coupled to the analog signal, outputting a filtered analog signal; and a comparator coupled to the filtered analog signal and outputting a stream of pulses.