31-10-2017, 01:43 PM
[b] verilog code wallace tree multiplier using compressor[/b]
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verilog code wallace tree multiplier using compressor
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[b] verilog code wallace tree multiplier using compressor[/b]
07-11-2017, 12:44 PM
The multiplier is an important block in most digital and high performance systems. Therefore the performance of said system can be improved by implementing a high speed multiplier. Variants of multipliers are available, in which a fast multiplier based on the Wallace tree encoded in the cockpit is analyzed. Wallace's conventional tree multiplier is based on the transport save adder. Here the speed of the multiplier is improved by introducing compressors instead of the transport storage adder. Compressor 3-2, compressor 4-2, compressors 5-2 and compressors 7-2 are used with the Wallace tree multiplier. Higher-order compressors have a better performance compared to the 3-2 compressor. So the speed of the multiplier can be improved by introducing the higher order compressors. The coding is done in Verilog HDL and the synthesis is done using Xilinx ISE 14.7. The additional analysis is done through the use of the Cadence Encounter tool. Several design parameters are analyzed, such as delay, area, power of the Wallace booth multiplier with several compressors and different radix.
The basic requirements for VLSI design are low power consumption. The comparison of the design and speed, the low power will improve the reliability, the reduction of the area will improve the portability and, if the delay is reduced, the speed will be improved. Arithmetic units are the essential building blocks of digital systems, such as the digital signal processor (DSP), the microprocessor, the microcontroller and other data processing units. For example, a study on the operation performed by the Arithmetic and Logical Unit (ALU) of an ARM processor revealed that the additions constituted more than 60% of the entire mathematical operation performed, which again emphasizes the importance of the multiplier block in the processors .
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