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are trademarks of their respective owners.

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Copyright 1999-2007 DCD – Digital Core Design. All Rights Reserved.

http://www.DigitalCoreDesign.com

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Floating Point Coprocessor

Double Precision

ver 3.03

OVERVIEW

DFPMU-DP is a Floating Point Coprocessor,

designed to assist CPU in performing the

floating

point

mathematic

computations.

DFPMU-DP directly replaces C software

functions, by equivalent, very fast hardware

operations, which significantly accelerate

system performance. It doesn’t require any

programming, so it also doesn’t require any

modifications made in the main software.

Everything is done automatically during soft-

ware compilation by the DFPMU-DP C driver.

DFPMU-DP was designed to operate with

DCD’s DP8051, but can also operate with

any other 8-, 16- and 32-bit processor. Driv-

ers for all popular 8051 C compilers are de-

livered together with the DFPMU-DP pack-

age.

DFPMU-DP uses the specialized CORDIC

and standard algorithms to compute math

functions. It supports addition, subtraction,

multiplication, division, square root

, com-

parison, and trigonometric functions: sine,

cosine, tangent

and arctangent. It has built-

in conversion instructions from integer type to

floating point type and vice versa. The input

numbers format is according to IEEE-754

standard. DFPMU-DP supports double and

single precision real numbers, 8-bit, 16-bit

and 32-bit integers. DFPMU-DP is prepared

to use with 8-, 16- and 32-bit processors.

Each floating point function can be turned

on/off

at configuration level providing the

flexible scalability of DFPMU-DP module. It

allows save silicon space and provides exact

configuration required by certain application.

DFPMU-DP is a technology independent de-

sign that can be implemented in a variety of

process technologies.

APPLI C ATIONS

Math coprocessors

DSP algorithms

Embedded arithmetic coprocessor

Fast data processing & control