Daniel R. Knebel

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We introduce and analyze the ground bounce due to power mode transition in power gating structures. To reduce the ground bounce, we propose novel power gating structures in which sleep transistors are turned on in a non-uniform stepwise manner. Our power gating structures reduce the magnitude of peak current and voltage glitches in the power distribution(More)
Most existing power gating structures provide only one power-saving mode. We propose a novel power gating structure that supports both a cutoff mode and an intermediate powersaving and data-retaining mode. Experiments with test structures fabricated in 0.13m CMOS bulk technology show that our power gating structure yields an expanded design space with more(More)
A novel power gating structure is proposed for low-power, high-performance VLSI. This power gating structure supports an intermediate power saving mode as well as a traditional power cut-off mode. To evaluate our power gating structure, we design and fabricate three different macros in 0.13 um CMOS bulk technology. Our measurement results show that the(More)
Short, medium, and long on-chip interconnections having linewidths of 0.45–52 m are analyzed in a five-metallayer structure. We study capacitive coupling for short lines, inductive coupling for medium-length lines, inductance and resistance of the current return path in the power buses, and line resistive losses for the global wiring. Design guidelines and(More)
The American cockroach, Periplaneta americana, provides a successful model for the study of legged locomotion. Sensory regulation and the relative importance of sensory feedback vs. central control in animal locomotion are key aspects in our understanding of locomotive behavior. Here we introduce the cockroach model and describe the basic characteristics of(More)
This paper will provide a case study of a particularly dificult debug problem (the Holey Shmoo problem) which developed while designing the IBM System1390 G6 637MH.z microprocessor chip. Resolution of this problem involved the use of some of today’s newest DFDIDFT and diagnostics techniques. The discussion of the Holey Shmoo problem and its debug will serve(More)
In lepidopteran insect cells infected with the baculovirus Autographa californica nuclear polyhedrosis virus (AcNPV), two major late viral gene products are expressed: the polyhedrin, a 28 000 mol. wt. protein which makes up the mass of the nuclear inclusion bodies, and a 10 000 mol. wt. protein (p10) whose function is unknown. The nucleotide sequences of(More)