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1 International Journal of Electronics and Telecommunications

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An Efficient Two-phase Clocked Sequential Multiply : Accumulator Unit for Image Blurring

Samanth Rashmi, Nayak Subramanya G.

International Journal of Electronics and Telecommunications

2022

Vol. 68, No. 2

307--313

The multiply-accumulator (MAC) unit is the basic integral computational block in every digital image and digital signal processor. As the demand grows, it is essential to design these units in an efficient manner to build a successful processor. By considering this into account, a power-efficient, high-speed MAC unit is presented in this paper. The proposed MAC unit is a combination of a two-phase clocked modified sequential multiplier and a carry-save adder (CSA) followed by an accumulator register. A novel two-phase clocked modified sequential multiplier is introduced in the multiplication stage to reduce the power and computation time. For image blurring, these multiplier and adder blocks are subsequently incorporated into the MAC unit. The experimental results demonstrated that the proposed design reduced the power consumption by 𝟓𝟐% and improved the computation time by 𝟒% than the conventional architectures. The developed MAC unit is implemented using 𝟏𝟖𝟎𝒏𝒎 standard CMOS technology using CADENCE RTL compiler, synthesized using XILINX ISE and the image blurring effect is analyzed using MATLAB.