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Digital Core Design - Floating Point Arithmetic Coprocessor

Numéro de référence DFPAU
Description Floating Point Arithmetic Coprocessor
Fabricant Digital Core Design 
Logo Digital Core Design 





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DFPAU fiche technique
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DFPAU
Floating Point Arithmetic Coprocessor
ver 2.05
OVERVIEW
DFPAU is a Floating Point Arithmetic Co-
processor, designed to assist CPU in per-
forming the floating point arithmetic computa-
tions. DFPAU 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 DFPAU C driver.
DFPAU was designed to operate with DCD’s
DP8051, but can also operate with any other
8-, 16- and 32-bit processor. Drivers for all
popular 8051 C compilers are delivered to-
gether with the DFPAU package
DFPAU uses the specialized algorithms to
compute arithmetic functions. It supports ad-
dition, subtraction, multiplication, division,
square root, comparison, absolute value, and
change sign of a number. The input numbers
format is according to IEEE-754 standard
single precision real numbers. DFPAU is pre-
pared to use with 8-, 16- and 32-bit proces-
sors. Trigonometric functions are supported
indirectly, because they are computed as set
of add, multiply and divide operations by
software subroutines. Each floating point
function can be turned on/off at configura-
tion level providing the flexible scalability of
DFPAU module. It allows save silicon space
and provides exact configuration required by
certain application.
DFPAU is a technology independent design
that can be implemented in a variety of proc-
ess technologies.
APPLICATIONS
Math coprocessors
DSP algorithms
Embedded arithmetic coprocessor
Fast data processing & control
KEY FEATURES
Direct replacement for C float software
functions such as: +, -, *, /,==, !=,>=, <=, <,
>
C interface supplied for all popular compil-
ers: GNU C/C++, 8051 compilers
No programming required
Configurability of all available functions
IEEE-754 Single precision real format
support – float type
Flexible arguments and result registers
location
Performs the following functions:
FADD, FSUB – addition, subtraction
FMUL, FDIV – multiplication, division
FSQRT
– square root
FCHS, FABS – change of sign, absolute
value
All trademarks mentioned in this document
are trademarks of their respective owners.
http://www.DigitalCoreDesign.com
http://www.dcd.pl
Copyright 1999-2007 DCD – Digital Core Design. All Rights Reserved.

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