| 摘要 |
<p>A system (10) for stablizing a delay through a signal path of an integrated circuit (IC) includes an oscillator (24) for producing a periodic first reference signal (REF1), a delay circuit (16) for delaying the first reference signal to produce a periodic second reference signal (REF2), and a loop controller (18) for adjusting the magnitude of the IC's power supply (VDD) so as to maintain a constant phase difference between the first and second reference signals (REF1, REF2). By adjusting the power supply magnitude (VDD), the loop controller also stabilizes signal path delays through logic circuits (14) implemented in the IC. The oscillator (24) is formed by a logic gate (20) implemented in the IC and a passive delay (22) feeding the logic gate's output back to its input. The delay of the delay circuit is programmably adjustable to allow for adjustement of the signal path delay through the IC.</p> |
