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DFPMU Datasheet, PDF (1/5 Pages) Digital Core Design – Floating Point Coprocessor | |||
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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 doesnât require any program-
ming, so it also doesnât 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 DCDâs
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
â Math coprocessors
â DSP algorithms
â Embedded arithmetic coprocessor
â Fast data processing & control
KEY FEATURES
â Direct replacement for C float software
functions such as: +, -, *, /,==, !=,>=, <=, <,
>
â Configurability of all available functions
â C interface supplied for all popular compil-
ers: GNU C/C++, 8051 compilers
â No programming required
â IEEE-754 Single precision real format
support â float type
â 16-bit word and 32-bit short integers for-
mat supported â integer types
â Flexible arguments and result registers
location
â Performs the following functions:
â FADD, FSUB â addition, subtraction
â FMUL, FDIV â multiplication, division
â FSQRT
â square root
â FCHS, FABS â change of sign, absolute
value
http://www.DigitalCoreDesign.com
http://www.dcd.pl
Copyright 1999-2007 DCD â Digital Core Design. All Rights Reserved.
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