IEEE Computer Society Annual Symposium on VLSI (ISVLSI'02)
Optimal Timing for Skew-Tolerant High-Speed Domino Logic
Pittsburgh, Pennsylvania
April 25-April 26
ISBN: 0-7695-1486-3
When low threshold voltage (V_t) is applied to domino logic to improve the performance, the tradeoff between performance and noise margin is a major design issue. To resolve the tradeoff, we propose Skew-Tolerant High-Speed (STHS) domino logic, which incorporates a dual keeper structure and delay logic gates. Detailed timing analysis of STHS domino logic induces optimal timing conditions wherein contention-free skew-tolerant window is maximized. We show that dual keeper structure increases innate noise-tolerance, and clock delay control logic fortifies signal skew-tolerance. Simulation results show that STHS domino logic is more robust to noise and signal skew than High-Speed (HS) domino logic, while presenting better performance and power efficiency.
Index Terms:
dynamic circuit, domino logic, skew, noise, keeper, optimal timing
Citation:
Seong-Ook Jung, Ki-Wook Kim, Steve Kang, "Optimal Timing for Skew-Tolerant High-Speed Domino Logic," isvlsi, pp.0041, IEEE Computer Society Annual Symposium on VLSI (ISVLSI'02), 2002