alexa A VLSI Implementation of Fast Addition Using an Effici
ISSN ONLINE(2320-9801) PRINT (2320-9798)

International Journal of Innovative Research in Computer and Communication Engineering
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Special Issue Article

A VLSI Implementation of Fast Addition Using an Efficient CSLAs Architecture

 
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Abstract

Carry Select Adder (CSLA) is a fast adder used in dataprocessing processors for performing fast arithmetic functions. From the structure of the CSLA, the scope is reducing the area of CSLA based on the efficient gate-level modification. However, the Regular CSLA is still area-consuming due to the dual Ripple-Carry Adder (RCA) structure. For reducing area, the CSLA can be implemented by using a single RCA and an add-one circuit instead of using dual RCA. The modified CSLA architecture has developed using Binary to Excess-1 converter (BEC). This paper proposes an efficient method which replaces the BEC using D latch. Experimental results are compared and the result analysis shows that the proposed architecture achieves the two folded advantages in terms of area and delay. This project was aimed for implementing high performance optimized FPGA architecture. Modelsim 10.0c is used for simulating the CSLA and synthesized using Xilinx PlanAhead13.4. Then the implementation is done in Virtex5 FPGA Kit.

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