Pseudo-random clocking to enhance signal integrity

— A methodology is proposed to reduce power/ground and substrate coupling noise by randomizing the clock signal. A pseudo-random number generation algorithm is used to produce a pseudo-random clock. A probability adjustment technique is introduced to compensate for the speed loss, permitting the average frequency of the pseudo-random clock to be determined. The proposed method achieves more than 24 dB attenuation in noise at the center frequency at a cost of less than 4% reduction in speed.

• Type: Conference
• Year: 2008
• Where: SOCC
• Authors: Selcuk Kose, Emre Salman, Zeljko Ignjatovic, Eby G. Friedman
• Keywords: Education, Pseudo-random Clock, Pseudo-random Number Generation, SOCC 2008, Substrate Coupling Noise