16-bit fixed point DSP with ROM
PDF, 335 Kb, File published: Aug 1, 1998
This application report describes two methods for implementing a digital sine-wave generator using the TMS320C2xx: the use of a direct look-up table with linear interpolation, and the use of mathematical series. Both methods are explained in terms of C-compatible and assembly-compatible functions. Formulas used for calculating and graphing the results are included for each method to demonstrate th
PDF, 36 Kb, File published: Aug 16, 1999
Mixing C and assembly language is an important task of digital signal processing (DSP) programming. It is very common for a software designer to write the kernel in C language and write some critical functions in DSP assembly language for improving the performance. This application report introduces you to writing a C callable assembly function for the Texas Instruments (TI)(tm) TMS320C2000 genera
PDF, 995 Kb, Revision: A, File published: Sep 7, 1999
Uninterruptible power supplies (UPS) play an important role in interfacing critical loads such as computers, communication systems, medical/life support systems, and industrial controls to the utility power grid. Among the various UPS topologies, on-line UPS provides the most protection to such loads against any utility power problem. However, because of the multiple power conversion stages, on-li
PDF, 97 Kb, File published: Apr 1, 1998
This application report presents the hidden-Markov-model-based speech-recognition system using a 16-bit fixed-point digital signal processor (DSP) from Texas Instruments (TI). It addresses the problems that have been encountered and the compromises that have been made to implement the hidden-Markov-model-based isolated-word recognizer using the TI TMS320C2xx DSP. This report addresses fixed-point
PDF, 106 Kb, File published: Apr 15, 2002
Efficient utilization of available memory in a TMS320C24x? DSP sometimes requires the placement of data in program space memory (as opposed to data space memory). In particular, the on-chip flash (or ROM) in the program space provides a large nonvolatile memory for storing constant arrays, look-up tables, and string tables. However, accessing this data using the C programming language is problemat
PDF, 297 Kb, Revision: A, File published: Jul 19, 2005
Low cost, high performance DSP controllers with integrated peripherals such as, analog-to-digital (A/D) converters and pulse width modulator (PWM), have enabled the power supply designers with a new tool for implementing control for their power conversion functions. However, the power designers with mostly analog control experience are faced with new challenges as they start to adopt this new tech
PDF, 85 Kb, File published: May 30, 2001
The task of generating a power supply for DSPs in space-constrained control applications can be a challenging task because of the need to minimize its cost and size. Therefore, this application report provides information on a simplified approach for designing a power supply. A sophisticated power supply controller and a novel power-conversion topology are introduced that minimize external compone
PDF, 539 Kb, File published: Aug 12, 1999
This application report presents a solution to control a 3-phase Permanent Magnet Synchronous motor using the Texas Instruments (TItm) TMS320F240 digital signal processor (DSP). This processor is part of a new family of DSPs that enable cost-effective design of intelligent controllers for brushless motors. The use of this DSP yields enhanced operations, fewer system components, lower system cost a
PDF, 39 Kb, File published: Aug 4, 1999
This application report describes how the Texas Instruments (TI)(tm) TMS320C20x digital signal processor (DSP) can be interfaced to the Intel(tm) 28F010 flash memory. The 28Fxxx flash memory are 5V memories that use a 12V supply to modify the contents of the flash memory. A full C implementation of the quick-erase and quick-pulse programming algorithm for the ?C20x DSPs is included.
PDF, 129 Kb, File published: Nov 29, 1999
JPEG compression/decompression technique is widely used for still image applications. There are two major ways to implement JPEG algorithm--hardware and software. The hardware approach is good for speed but it has less flexibility and it costs more.The software approach, on the other hand, is less expensive and more flexible. Implementing JPEG with TMS320C2xx DSP software is a good solution fo
PDF, 99 Kb, File published: Aug 17, 2001
The TMS320C24x? generation of DSPs provide appropriate internal hardware for interfacing with low-cost, external-speed sensors for motor speed measurement applications. The periodic output signal from the speed sensor is applied to the capture input pin of the DSP and the signal?s period is measured. This information is then used to calculate the motor speed. However, this calculation of motor spe
PDF, 340 Kb, File published: Jun 1, 1997
The DSP controller TMS320F240 from Texas Instruments is suitable for a wide range of motor drives and power electronic applications. TMS320F240 reduces chip count of a system by integrating most of the important power electronics peripherals on chip and thus increases system reliability and reduces system cost. This application note describes complete implementation of a current controlled Switche
PDF, 306 Kb, Revision: A, File published: Sep 21, 1999
This report describes the basic operation of switched reluctance motors (SRMs) and demonstrates how a TMS320F240 DSP-based SRM drive from Texas Instruments (TM) can be used to achieve a wide variety of control objectives. The first part of the report offers a detailed review of the operation and characteristics of SRMs. The advantages and disadvantages of this type of motor are cited. The second p
PDF, 421 Kb, Revision: A, File published: Jul 10, 2002
This application report presents basic code for initializing and operating the TMS320LF240x DSP devices. Two functionally equivalent example programs are presented: one written in assembly language and the other in C language. Detailed discussions of each program are provided that explain numerous compiler and assembler directives, code requirements, and hardware-related requirements. The programs
PDF, 340 Kb, Revision: A, File published: Aug 8, 2017
Thisapplicationreportfirst presentsa TMS320F240DSPsolutionand thenanotheruniqueapproachusingPGA411-Q1for obtainingthe angularpositionand speedof a resolver.A resolveris an absolutemechanicalpositionsensorused,for example,in servoapplications.It isbasicallya rotatingtransformer.The sinusoidalinputreferenceis amplitudemodulatedw
PDF, 57 Kb, File published: Apr 7, 2003
This application note will outline and discuss the Code Composer Studio Profiler and how to use it in accurately profiling an application. We will explain the various types of profiling and will detail the differences between simulator profiling and emulator profiling.Requirements:Windows 98 (SP1/SE), Windows NT SP6, Windows 2000 (SP1/SP2), Windows XP Home and ProCode Co
PDF, 499 Kb, File published: Sep 6, 2000
PDF, 112 Kb, File published: Jan 1, 1997
This document deals with solutions to control a switched reluctance motor using the TMS320C24x. This new DSP family enables cost-effective design of intelligent controllers for switched reluctance motors. Two speed control algorithms are presented, they allow the Switched Reluctance motor drive to reach high efficiency, smooth operation, very good dynamic behavior, very high speed and low acoustic
PDF, 246 Kb, File published: Oct 30, 1999
With the advent of high-speed digital signal processors (DSPs) specialized for motion control applications, it has become possible to control motors without mechanical (speed or position) sensors. This is achieved by algorithms that estimate the desired quantities in real time, based on the electrical signals in the motor windings. Benefits include cost savings and improved reliability due to redu
PDF, 138 Kb, File published: Apr 29, 1999
New generations of motor control digital signal processors (DSPs) lower their supply voltages from 5V to 3.3V to offer higher performance at lower cost. Replacing traditional 5V digital control circuitry by 3.3V designs introduce no additional system cost and no significant complication in interfacing with TTL and CMOS compatible components, as well as with mixed voltage ICs such as power transist
PDF, 117 Kb, File published: Jul 11, 2002
This application report describes the process of migrating an existing Code Composer v4.12 project to a Code Composer Studio? Integrated Development Environment (IDE) v2 project.
PDF, 201 Kb, Revision: C, File published: Apr 19, 2016
