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http://www.DigitalCoreDesign.com

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Floating Point Arithmetic Coprocessor

Double Precision

ver 3.02

OVERVIEW

DFPAU-DP is a Floating Point Arithmetic Co-

processor, designed to assist CPU in per-

forming the floating point arithmetic computa-

tions. DFPAU-DP directly replaces C soft-

ware functions, by equivalent, very fast hard-

ware operations, which significantly acceler-

ate 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 DFPAU-DP C driver.

DFPAU-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 DFPAU-DP pack-

age.

DFPAU-DP uses the specialized algorithms

to compute math functions. It supports addi-

tion, subtraction, multiplication, division,

square root

, and comparison. 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. DFPAU-DP supports double and

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

and 32-bit integers. DFPAU-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 DFPAU-DP module. It

allows save silicon space and provides exact

configuration required by certain application.

DFPAU-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