Probabilistic Methods for Combinational Circuits
ثبت نشده
چکیده
The probabilistic methods for power estimation in combinational circuits are classified in two categories according to the adopted gate-delay model. The zero and real gate-delay power estimation methods. Under zero delay model, assuming spatiotemporal independence among the circuit signals, the switching activity, E(sw), of a circuit node, x, is given by ) 1 ( 2 2 ) ( 1 1 0 1 x x x x p p p p sw E x − = = . Thus, the problem is reduced to the computation of the
منابع مشابه
A Probabilistic Model for Soft-Error Rate Estimation in Combinational Logic
Single Event Upsets (SEU) arising from atmospheric neutrons and alpha particles are becoming increasingly important in combinational logic circuits. Combinational logic is resilient to soft errors due to three masking phenomena: (1) Logical Masking, (2) Electrical Masking, and (3) Latching-window Masking. This paper concentrates on logical masking, and proposes a probabilistic model which calcu...
متن کاملOn Switching Aware Synthesis for Combinational Circuits
We propose a synthesis algorithm for combinational circuits which optimizes the expected number of gate switchings induced by typical sequences of input vectors. Our algorithm, which is based on simple observations concerning AND gates, performs quite well on sequences produced by the same probabilistic models used to generate the training sequences.
متن کاملA Design Methodology for Reliable MRF-Based Logic Gates
Probabilistic-based methods have been used for designing noise tolerant circuits recently. In these methods, however, there is not any reliability mechanism that is essential for nanometer digital VLSI circuits. In this paper, we propose a novel method for designing reliable probabilistic-based logic gates. The advantage of the proposed method in comparison with previous probabilistic-based met...
متن کاملEstimation of average switching activity in combinational logic circuits using symbolic simulation
We address the problem of estimating the average switching activity of combinational circuits under random input sequences. Switching activity is strongly affected by gate delays, and for this reason we use a variable delay model in estimating switching activity. Unlike most probabilistic methods that estimate switching activity, our method takes into account correlation caused at internal gate...
متن کاملDesigning Nanoscale Logic Circuits Based on Markov Random Fields
As devices and operating voltages are scaled down, future circuits will be plagued by higher soft error rates, reduced noise margins and defective devices. A key challenge for the future is retaining high reliability in the presence of faulty devices and noise. Probabilistic computing offers one possible approach. In this paper we describe our approach for mapping circuits onto CMOS using princ...
متن کامل