WAVEFORM GENERATION

摘要

A predetermined waveform is generated using a lower frequency clock signal (16) and a higher frequency clock signal (18). The waveform transitions between first and second states (12, 14) in synchrony with timing signals (18-1 to 18-11) of the higher frequency clock signal (18). The higher frequency clock is operated if the waveform will transition between the first and second states (12, 14) before the next timing signal (16-2) of the lower frequency clock. The higher frequency clock is powered down if the waveform will not transition between the first and second states (12, 14) before the next timing signal (16-3) of the lower frequency clock. The predetermined waveform can thus be generated having higher resolution but with lower power consumption.

主权项

1. A method of generating a predetermined waveform using a higher frequency clock and a lower frequency clock, the waveform transitioning between first and second states in synchrony with timing signals of the higher frequency clock, the method comprising:
operating the higher frequency clock if the waveform will transition between said states before the next timing signal of the lower frequency clock; and powering down the higher frequency clock if the waveform will not transition between said states before the next timing signal of the lower frequency clock.