Function

Computer Arithmetic of
Complex Numbers
&
Arithmetic Unit VHDL-model

Complex Variable Elementary Functions Unit

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Overview

Complex Variable Elementary Functions Unit - COVEF uses complex arithmetics algorithm to compile elementary functions of complex variable. The data number format is according to floating point IEEE-754 standard. Complex numbers on an input and an output are represented by two codes in this format. The COVEF calculates a trigonometric and reverse trigonometric, hyperbolic and reverse hyperbolic functions. Logarithm, square root, exponent etc. functions can also be computed. COVEF is a technology independent design that can be implemented in a variety of process technologies.

Application

Math coprocessor

DSP algorithms

Embeded arithmetic coprocessor

Smart antenna systems

Fast data processing

Key Features

Full IEEE-754 complicante

Simple interface

Quick-action

Fully synthesizable

Fully available VHDL source code

No programming required

Performs the following functions of complex variable:


Name	Formula
Module	Module
Angle	Angle
Unit Vector	Ort
Exponent	Exp
Natural Logarithm	Log
Square Root	Sqrt
	Sin
	Cos
	Tg
	Ctg
	Sh
	Ch
	Cth
	Th
	arcSin
	arcCos
	arcTg
	arcCtg
	arSh
	arCh
	arTh
	arCth
Cartesian to Polar Transformation
Polar to Cartesian Transformation
Vector Rotation

Pins Description

Pin	Type	Description
clk	input	Global clock
rst	input	Asynchronous global reset
start	input	Signal for starting operation
instr (4:0)	input	Instruction code
dataiRe (31:0)	input	Data bus of Real Part (input)
dataiIm (31:0)	input	Data bus of Imaginery Part (input)
ready	output	Signal indicating the operation completed
dataoRe (31:0)	output	Data bus of Real Part (output)
dataoIm (31:0)	output	Data bus of Imaginery Part (output)
ov	output	Overflow signal
cond	output	Indications of operation result

Deliverables

VHDL source code
Encrypted or plain test EDIF netlist
ModelSim test bench environment
Test with reference responses
Technical support

Licensing

Comprehensible and clearly defined licensing methods without royalty fees make using IP Core easy and simply. License allows use IP Core in FPGA (ALTERA and XILINX) devices or ASIC implementation.