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04-04-2015, 11:44 AM

sir i need design of BZ FAD multiplier vhdl code and documentation please i request you to help me

jaseela123d · 14-03-2017, 03:05 PM

A low power structure considerably reduces the switching activity of conventional multipliers. Modifications to the conventional multiplier multiplying A by B include eliminating the shift of register B, direct feeding from A to the adder, avoiding the adder whenever possible, using a ring counter. Low-power structure for displacement and addition Multipliers called BZ-FAD (Bypass Zero, Feed A Directly) are proposed. The consbinary counter of the architecture and elimination of the partial change of the product. The architecture makes use of a low power ring counter. The proposed multiplier can be used for low power applications where speed is not a primary design parameter. The proposed architecture is described using HDL, simulated in the ISE simulator and synthesized using Xilinx ISE 10.1. The power simulation is done using the Cadence RTL compiler.

Advances in microelectronics technology have led to more efficient coding of data, more reliable transmission of information and more integrated intelligence in systems. In particular, to meet the growing demand in the portable applications market, these microelectronic devices consume very little power. Consequently, several digital signal processing chips are now designed with low power dissipation. In such systems, a multiplier is a fundamental arithmetic unit. The multiplication can be considered as a series of repeated additions. The number to add is the multiplying, the number of times it is added is the multiplier, and the result is the product. Each step of the addition generates a partial product. For portable applications where power consumption is the most important parameter, one should reduce energy dissipation as much as possible. One of the best ways to reduce dynamic power dissipation, hence called power dissipation in this project work, is to minimize total switching activity, ie, the total number of system signal transitions. Reducing power consumption and improving the throughput of circuit designs are undoubtedly the two major design challenges of wireless multimedia applications and digital signal processor (DSP). Due to the high complexity of the circuit, the energy consumption and the design area are two other design considerations of the multiplier. Multiplication is an essential arithmetic operation for common DSP applications, such as filtering and fast Fourier transform (FFT). To achieve a high execution speed, multipliers of parallel matrices are widely used. These multipliers tend to consume most of the power in the DSP calculations and, therefore, energy-efficient multipliers are very important for the design of low-power DSP systems. CMOS is currently the dominant technology in digital VLSI. Two components contribute to power dissipation in CMOS circuits. The static dissipation is due to the leakage current, while the dynamic power dissipation is due to the transient switching current, as well as to the loading and unloading of the capacitances. Since the amount of leakage current is usually small, the main source of power dissipation in CMOS circuits is dynamic power dissipation.

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