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PDF DFPMU Data sheet ( Hoja de datos )
| Número de pieza | DFPMU | |
| Descripción | Floating Point Coprocessor | |
| Fabricantes | Digital Core Design | |
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DFPMU
Floating Point Coprocessor
ver 2.05
OVERVIEW
DFPMU is a Floating Point Coprocessor, de-
signed to assist CPU in performing the float-
ing point mathematic computations. DFPMU
directly replaces C software functions, by
equivalent, very fast hardware operations,
which significantly accelerate system per-
formance. It doesn’t require any program-
ming, so it also doesn’t require any modifica-
tions made in the main software. Everything
is done automatically during software compi-
lation by the DFPMU C driver.
DFPMU 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 DFPMU package.
DFPMU uses the specialized CORDIC and
standard algorithms to compute math func-
tions. It supports addition, subtraction, mul-
tiplication, division, square root, compari-
son, absolute value, change sign of a number
and trigonometric functions: sine, cosine,
tangent and arctangent. It has built-in con-
version instructions from integer type to float-
ing point type and vice versa. The input num-
bers format is according to IEEE-754 stan-
dard. DFPMU supports single precision real
numbers, 16-bit and 32-bit integers. Each
floating point function can be turned
on/off at configuration level providing the
flexible scalability of DFPMU module. It al-
lows save silicon space and provides exact
configuration required by certain application.
All trademarks mentioned in this document
are trademarks of their respective owners.
DFPMU 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: +, -, *, /,==, !=,>=, <=, <,
>
● Configurability of all available functions
● C interface supplied for all popular compil-
ers: GNU C/C++, 8051 compilers
● No programming required
● IEEE-754 Single precision real format
support – float type
● 16-bit word and 32-bit short integers for-
mat supported – integer types
● 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
http://www.DigitalCoreDesign.com
http://www.dcd.pl
Copyright 1999-2007 DCD – Digital Core Design. All Rights Reserved.
1 page  
CONTACTS
For any modification or special request
please contact to Digital Core Design or local
distributors.
Headquarters:
Wroclawska 94
41-902 Bytom, POLAND
e-mail: iinnffoo@@ddccdd..ppll
tel. : +48 32 282 82 66
fax : +48 32 282 74 37
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Distributors:
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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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