Latency & Area Measurement and Optimization of Asynchronous Nanowire Crossbar System


In this work, a novel model-based latency/area measurement and optimization method for the newly proposed Asynchronous Nanowire Reconfigurable Crossbar Architecture (ANRCA) is presented and validated. ANRCA is based on a self-timed logic referred to as the Null Convention Logic (NCL). Since there is no global clocking and clock distribution network, all failure modes related to timing will be either eliminated or relaxed. The proposed architecture is anticipated to have higher manufacturability and robustness that are critical factors in nanoscale systems due to nondeterministic nature of nanoassembly. In order to facilitate efficient programming and flexible reconfiguration, a new hierarchical reconfigurable architecture for ANRCA is also proposed. Various configurable logic block structures have been considered and also their programming and reconfiguration issues are discussed. The proposed measurement and optimization method can be used to estimate area and latency measurements for different configurable logic blocks and also applied to find the optimal structure for the given arbitrary logic to map. As a case study, a full adder (i.e., combinational logic block) with input and output registrations (i.e., sequential elements) has been implemented on the proposed configurable logic block structures to validate the proposed measurement and optimization method.

Meeting Name

IEEE International Instrumentation and Measurement Technology Conference: I2MTC (2010: May 3-6, Austin, TX)


Electrical and Computer Engineering


National Science Foundation (U.S.)


This work was supported in part by the National Science Foundation under ECCS-0801362.

Keywords and Phrases

Area Measurement; Area/Latency Measurement; Asynchronous Computing; Clock Distribution Network; Combinational Logic Blocks; Configurable Logic Blocks; Critical Factors; Crossbar Architecture; Flexible Reconfiguration; Full Adders; Input and Outputs; Manufacturability; Model-Based; Nano-Assemblies; Nano-Scale System; Null Convention Logic (NCL); Optimal Structures; Optimization Method; Proposed Architectures; Re-Configurable; Reconfigurable Architecture; Reconfigurable Logic; Self-Timed; Sequential Elements; Adders; Differentiating Circuits; Distributed Parameter Networks; Failure Analysis; Instruments; Measurement Theory; Nanowires; Network Architecture; Structural Optimization; Nanowire Crossbar; Optimization

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Document Type

Article - Conference proceedings

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© 2010 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2010