logic minimization algorithms for vlsi synthesis is available in our book collection an online access to it is set as public so you can get it instantly. Our book servers saves in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the logic minimization algorithms for vlsi synthesis is universally compatible with any devices to read.

Logic Minimization Algorithms For Vlsi Synthesis

Thank you for reading logical effort designing fast cmos circuits. As you may know, people have search numerous times for their chosen novels like this logical effort designing fast cmos circuits, but end up in infectious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they are facing with some harmful bugs inside their desktop computer. logical effort designing fast cmos circuits is available in our book collection an online access to it is set as public so you can download it instantly. Our book servers hosts in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the logical effort designing fast cmos circuits is universally compatible with any devices to read.

Logical Effort Designing Fast Cmos Circuits

Comments on Dual-rail asynchronous logic multi-level implementation

Given a Boolean function f on n variables, a Disjoint Sum-of-Products (DSOP) of f is a set of products (ANDs) of subsets of literals whose sum (OR) equals f, such that no two products cover the same minterm of f. DSOP forms are a special instance of partial DSOPs, i.e. the general case where a subset of minterms must be covered exactly once and the other minterms (typically corresponding to don't care conditions of f) can be covered any number of times. We discuss finding DSOPs and partial DSOPs with a minimal number of products, a problem theoretically connected with various properties of Boolean functions and practically relevant in the synthesis of digital circuits. Finding an absolute minimum is hard, in fact we prove that the problem of absolute minimization of partial DSOPs is NP-hard. Therefore it is crucial to devise a polynomial time heuristic that compares favorably with the known minimization tools. To this end we develop a further piece of theory starting from the definition of the weight of a cube c as a functions of the number of fragments induced on other cubes by the selection of c, and show how cube weights can be exploited for building a class of minimization heuristics for DSOP and partial DSOP synthesis. A set of experiments conducted on major benchmark functions show that our method, with a family of variants, always generates better results than the ones of previous heuristics, including the method based on a BDD representation of f.

Compact DSOP and Partial DSOP Forms

Dual-rail asynchronous logic multi-level implementation

We propose a novel synthesis method of a dual-rail asynchronous two-level logic of reduced cost. It is based on a model that operates under so called modified weak constraints. The logic is implemented as a minimized AND-OR structure, together with the completion detection logic. We formulated and proved the product term minimization constraint that ensures a correct logic behavior. We processed the MCNC benchmarks and generated asynchronous two-level logic. The implementation complexity was compared with the state-of-the-art approach. Using our approach, we achieved a significant improvement.

/pdf/asynchronous-two-level-logic-of-reduced-cost-53kxnk8yts.pdf

Asynchronous two-level logic of reduced cost

Multi-Level Implementation of Asynchronous Logic Using Two-Level Nodes

Asynchronous circuit implementations operating under strong constraints (DIMS, Direct Logic, some of NCL gates, etc.) are attractive due to: 1) regularity, 2) combined implementation of the functional and completion detection logics, what simplifies the design process, 3) circuit output latency is based on the actual gate delays of the unbounded nature, 4) absence of additional synchronization chains (even of a local nature). However, the area and speed penalty is rather high. In contrast to the state-of-the-art approaches, where simple (NAND, NOR, etc.) 2 input gates are used, we propose a synthesis method based on complex nodes, i.e., nodes implementing any function of an arbitrary number of inputs. Synchronous synthesis procedures may be freely adopted for this purpose. Numerous experiments on standard benchmarks were performed and the efficiency of the proposed complex gate based method is clearly shown. DIMS and Direct Logic based asynchronous designs are considered in the paper.

/pdf/area-and-speed-oriented-implementations-of-asynchronous-1lm9rmrxfn.pdf

Area and Speed Oriented Implementations of Asynchronous Logic Operating under Strong Constraints

We propose a method of the asynchronous sum-of-products SOP logic simplification that comprises of minimization and orthogonalization. The method is based on a transformation of the conventional single-rail SOP synchronous logic into the dual-rail asynchronous one operating under so-called modified weak constraints. We formulate and prove the product terms constraint that ensures a correct logic behavior. We have processed the MCNC benchmarks and generated the asynchronous SOP logic. The complexity of the logic obtained is compared with the state-of-the-art representation. Using our approach, we achieve a significant improvement. Copyright © 2012 John Wiley & Sons, Ltd.

Igor Lemberski

Papers

Dual-rail asynchronous logic multi-level implementation

Asynchronous two-level logic of reduced cost

Multi-Level Implementation of Asynchronous Logic Using Two-Level Nodes

Area and Speed Oriented Implementations of Asynchronous Logic Operating under Strong Constraints

Asynchronous sum-of-products logic minimization and orthogonalization