Texas Instruments TMS320C3x Manuale utente

TMS320C3x

User’s Guide

Literature Number: SPRU031E

2558539-9761 revision L

July 1997

Printed on Recycled Paper

IMPORTANT NOTICE

Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any

semiconductor product or service without notice, and advises its customers to obtain the latest

version of relevant information to verify, before placing orders, that the information being relied

on is current.

TIwarrantsperformanceofitssemiconductorproductsandrelatedsoftwaretothespecifications

applicableatthetimeofsaleinaccordancewithTI’sstandardwarranty.Testingandotherquality

control techniques are utilized to the extent TI deems necessary to support this warranty.

Specific testing of all parameters of each device is not necessarily performed, except those

mandated by government requirements.

Certain applications using semiconductor products may involve potential risks of death,

personal injury, or severe property or environmental damage (“Critical Applications”).

TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR

WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES

OR SYSTEMS OR OTHER CRITICAL APPLICATIONS.

Inclusion of TI products in such applications is understood to be fully at the risk of the customer.

UseofTIproducts in such applications requires the written approvalofanappropriate TI officer.

Questions concerning potential risk applications should be directed to TI through a local SC

sales office.

In order to minimize risks associated with the customer’s applications, adequate design and

operating safeguards should be provided by the customer to minimize inherent or procedural

hazards.

TI assumes no liability for applications assistance, customer product design, software

performance, or infringement of patents or services described herein. Nor does TI warrant or

representthatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,

mask work right, or other intellectual property right of TI covering or relating to any combination,

machine, or process in which such semiconductor products or services might be or are used.

iii

Preface

Read This First

About This Manual

This user’sguide serves as an applications reference book for theTMS320C3x

generationof digital signal processors (DSPs). These include the TMS320C30,

TMS320C31, TMS320LC31, and TMS320C32. Throughout the book, all refer-

ences to ’C3x refer collectively to the ’C30, ’C31, ’LC31 and ’C32.

This book provides information to assist managers and hardware/software

engineers in application development. It includes example code and hard-

ware connections for various applications.

The guide shows how to use the instructions set, the architecture, and the ’C3x

interface. It presents examples for frequently used applications and discusses

more involved examples and applications. It also defines the principles involved

in many applications and gives the corresponding assembly language code for

instructionalpurposesandforimmediateuse.Wheneverthe detailedexplanation

oftheunderlyingtheoryis tooextensivetobeincludedin thismanual,appropriate

references are given for further information.

Notational Conventions

This document uses the following conventions.

Program listings, program examples, and interactive displays are shown in

a special typeface. Examples use a bold version of the special

typeface for emphasis; interactive displays use a bold version of the

specialtypefacetodistinguishcommandsthatyouenterfromitemsthatthe

systemdisplays(suchasprompts,commandoutput,errormessages,etc.).

Here is a sample program listing:

0011 0005 0001 .field 1, 2

0012 0005 0003 .field 3, 4

0013 0005 0006 .field 6, 3

0014 0006 .even

Here is an example of a system prompt and a command that you might

enter:

C: csr –a /user/ti/simuboard/utilities

Notational Conventions

In syntax descriptions, the instruction, command, or directive is in bold

typeface and parameters are in an

italic typeface

. Portions of a syntax that

areinbold must beenteredas shown;portionsofasyntax thatarein

italics

describe the type of information that must be entered. Here is an example

of a directive syntax:

.asect ”

section name

”,

address

The directive .asect has two parameters, indicated by

section name

and

address

. When you use .asect, the first parameter is an actual section

name, enclosed in double quotes; the second parameter is an address.

Square brackets ( [and ]) identify an optional parameter. If you use an

optional parameter, you specify the information within the brackets; you

donotenterthebracketsthemselves.Hereisanexampleofaninstruction

that has an optional parameter:

LALK

16-bit constant [, shift]

The LALK instruction has two parameters. The first parameter,

16-bit

constant

, is required. The second parameter,

shift

, is optional. As this syntax

shows, if you use the optional second parameter, you must precede it with a

comma.

Square brackets are also used as part of the pathname specification for

VMS pathnames; in this case, the brackets are actually part of the path-

name (they are not optional).

Braces( {and} )indicatealist.Thesymbol|(readas

)separatesitems

within the list. Here is an example of a list:

{ * | *+ | *– }

This provides three choices: *, *+, or *–.

Unless the list is enclosed in square brackets, you must choose one item

from the list.

Some directives can have a varying number of parameters. For example,

the.byte directivecan haveupto 100parameters.The syntaxforthis direc-

tive is:

.byte

value

[, ... , value

]

This syntax shows that .byte has at least one value parameter, but you

may supply additional value parameters, separated by commas.

Information About Cautions / Related Documentation from Texas Instruments

Read This First

Information About Cautions

This book contains cautions.

This is an example of a caution statement.

A caution statement describes a situation that could potentially

damage your software or equipment.

The information in a caution is provided for your protection. Please read each

caution carefully.

Related Documentation From Texas Instruments

The following books describe the TMS320 floating-point devices and related

support tools. To obtain a copy of any of these TI documents, call the Texas

Instruments Literature Response Center as indicated in the section

If You

Need Assistance

…on page vi. When ordering, please identify the book by its

title and literature number.

TMS320C3xGeneral PurposeApplications User’sGuide

(literaturenumber

SPRU194) provides information to assist you in application development

for the TMS320C3x generation of digital signal processors (DSPs). It

includesexamplecodeand hardwareconnectionsfor variousappliances.

It also defines the principles involved in many applications and gives the

correspondingassemblylanguagecodeforinstructionalpurposesandfor

immediate use.

TMS320C3x/C4x Assembly Language Tools User’s Guide

(literature

number SPRU035) describes the assembly language tools (assembler,

linker, and other tools used to develop assembly language code),

assembler directives, macros, common object file format, and symbolic

debugging directives for the ’C3x and ’C4x generations of devices.

TMS320C3x/C4x Optimizing C Compiler User’s Guide

(literature number

SPRU034) describes the TMS320 floating-point C compiler. This C compiler

accepts ANSI standard C source code and produces TMS320 assembly

language source code for the ’C3x and ’C4x generations of devices.

Related Documentation from Texas Instruments / References

TMS320C3x C Source Debugger User’s Guide

(literature number

SPRU053)tellsyouhowtoinvokethe’C3xemulator,evaluationmodule,

and simulator versions of the C source debugger interface. This book

discusses various aspects of the debugger interface, including window

management, command entry, code execution, data management, and

breakpoints. It also includes a tutorial that introduces basic debugger

functionality.

TMS320 DSP Development Support Reference Guide

(literature number

SPRU011)describestheTMS320familyofdigitalsignalprocessorsand

the tools that support these devices. Included are code-generation tools

(compilers, assemblers, linkers, etc.) and system integration and debug

tools(simulators,emulators,evaluationmodules,etc.).Alsocoveredare

available documentation, seminars, the university program, and factory

repair and exchange.

TMS320 Third-Party Support Reference Guide

(literature number

SPRU052)alphabeticallylistsover100 third parties that providevarious

products that serve the family of TMS320 digital signal processors. A

myriadofproductsandapplicationsareoffered—softwareandhardware

development tools, speech recognition, image processing, noise can-

cellation, modems, etc.

References

The publications in the following reference list contain useful information

regarding functions, operations, and applications of digital signal processing

(DSP). These books also provide other references to many useful technical

papers.ThereferencelistisorganizedintocategoriesofgeneralDSP,speech,

image processing, and digital control theory and is alphabetized by author.

General Digital Signal Processing

Antoniou, Andreas,

Digital Filters: Analysis and Design

. New York, NY:

McGraw-Hill Company, Inc., 1979.

Bateman, A., and Yates, W.,

Digital Signal Processing Design

. Salt Lake

City, Utah: W. H. Freeman and Company, 1990.

Brigham, E. Oran,

The Fast Fourier Transform.

Englewood Cliffs, NJ:

Prentice-Hall, Inc., 1974.

Burrus,C.S.,andParks,T.W.,

DFT/FFTandConvolutionAlgorithms.

New

York, NY: John Wiley and Sons, Inc., 1984.

Chassaing, R., and Horning, D.,

Digital Signal Processing with the

TMS320C25.

New York, NY: John Wiley and Sons, Inc., 1990.

DigitalSignalProcessingApplicationswiththeTMS320Family,Vol.I.

Tex-

as Instruments, 1986; Prentice-Hall, Inc., 1987.

References

vii

Read This First

Digital Signal Processing Applications with the TMS320 Family, Vol. III.

Texas Instruments, 1990; Prentice-Hall, Inc., 1990.

Gold, Bernard, and Rader, C.M.

,Digital Processing ofSignals.

New York,

NY: McGraw-Hill Company, Inc., 1969.

Hamming, R.W.,

Digital Filters

. Englewood Cliffs, NJ: Prentice-Hall, Inc.,

1977.

Hutchins, B., and Parks, T.,

A Digital Signal Processing Laboratory Using

the TMS320C25

. Englewood Cliffs, NJ: Prentice-Hall, Inc., 1990.

IEEE ASSP DSP Committee (Editor),

Programs for Digital Signal Processing.

New York, NY: IEEE Press, 1979.

Jackson, Leland B.,

Digital Filters and Signal Processing.

Hingham, MA:

Kluwer Academic Publishers, 1986.

Jones, D.L., and Parks, T.W.,

A Digital Signal Processing Laboratory Using

the TMS32010.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1987.

Lim, Jae, and Oppenheim, Alan V. (Editors),

Advanced Topics in Signal

Processing

. Englewood Cliffs, NJ: Prentice-Hall, Inc., 1988.

Morris, L. Robert,

Digital Signal Processing Software.

Ottawa, Canada:

Carleton University, 1983.

Oppenheim, Alan V. (Editor),

Applications of Digital Signal Processing.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1978.

Oppenheim,AlanV.,andSchafer,R.W.,

DigitalSignalProcessing.

Engle-

wood Cliffs, NJ: Prentice-Hall, Inc., 1975.

Oppenheim, Alan V., and Schafer, R.W.,

Discrete-Time Signal Processing.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1989.

Oppenheim, Alan V., and Willsky, A.N., with Young, I.T.,

Signals and

Systems.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1983.

Parks,T.W.,andBurrus,C.S.,

DigitalFilterDesign.

NewYork,NY:JohnWiley

and Sons, Inc., 1987.

Rabiner,LawrenceR.,andGold,Bernard,

TheoryandApplicationofDigital

Signal Processing

. Englewood Cliffs, NJ: Prentice-Hall, Inc., 1975.

Treichler,J.R.,Johnson,Jr.,C.R.,andLarimore,M.G.,

TheoryandDesign

of Adaptive Filters

. New York, NY: John Wiley and Sons, Inc., 1987.

Speech

Gray, A.H., and Markel, J.D.,

Linear Prediction of Speech

. New York, NY:

Springer-Verlag, 1976.

Jayant, N.S., and Noll, Peter,

Digital Coding of Waveforms

. Englewood

Cliffs, NJ: Prentice-Hall, Inc., 1984.

Papamichalis, Panos,

Practical Approaches to Speech Coding.

Engle-

wood Cliffs, NJ: Prentice-Hall, Inc., 1987.

References

viii

Parsons, Thomas.,

Voice and Speech Processing.

New York, NY:

McGraw Hill Company, Inc., 1987.

Rabiner, Lawrence R., and Schafer, R.W.,

Digital Processing of Speech

Signals.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1978.

Shaughnessy, Douglas.,

Speech Communication.

Reading, MA: Addison-

Wesley, 1987.

Image Processing

Andrews, H.C., and Hunt, B.R.,

Digital Image Restoration

. Englewood

Cliffs, NJ: Prentice-Hall, Inc., 1977.

Gonzales,RafaelC.,andWintz,Paul,

DigitalImageProcessing.

Reading,

MA: Addison-Wesley Publishing Company, Inc., 1977.

Pratt,WilliamK.,

DigitalImageProcessing

.NewYork,NY:JohnWileyand

Sons, 1978.

Multirate DSP

Crochiere, R.E., and Rabiner, L.R.,

Multirate Digital Signal Processing

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1983.

Vaidyanathan,P.P.,

MultirateSystemsandFilterBanks

.EnglewoodCliffs,

NJ: Prentice-Hall, Inc.

Digital Control Theory

Dote,Y.,

ServoMotorandMotionControlUsingDigitalSignalProcessors

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1990.

Jacquot, R.,

Modern Digital Control Systems.

New York, NY: Marcel Dekker,

Inc., 1981.

Katz, P.,

Digital Control Using Microprocessors

. Englewood Cliffs, NJ:

Prentice-Hall, Inc., 1981.

Kuo, B.C.,

Digital Control Systems.

New York, NY: Holt, Reinholt and

Winston, Inc., 1980.

Moroney,P.,

IssuesintheImplementationofDigitalFeedbackCompensa-

tors.

Cambridge, MA: The MIT Press, 1983.

Phillips, C., and Nagle, H.,

Digital Control System Analysis and Design.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1984.

Adaptive Signal Processing

Haykin, S.,

Adaptive Filter Theory.

Englewood Cliffs, NJ: Prentice-Hall,

Inc., 1991.

Widrow, B., and Stearns, S.D.

Adaptive Signal Processing.

Englewood

Cliffs, NJ: Prentice-Hall, Inc., 1985.

References

Read This First

Array Signal Processing

Haykin,S.,Justice,J.H.,Owsley,N.L.,Yen,J.L.,andKak,A.C.

ArraySignal

Processing.

Englewood Cliffs, NJ: Prentice-Hall, Inc., 1985.

Hudson, J.E.

Adaptive Array Principles.

New York, NY: John Wiley and

Sons, 1981.

Monzingo,R.A., and Miller,J.W.

Introduction to Adaptive Arrays.

NewYork,

NY: John Wiley and Sons, 1980.

If You Need Assistance

If You Need Assistance . . .

World-Wide Web Sites

TI Online http://www.ti.com

Semiconductor Product Information Center (PIC) http://www.ti.com/sc/docs/pic/home.htm

DSP Solutions http://www.ti.com/dsps

320 Hotline On-line

http://www.ti.com/sc/docs/dsps/support.htm

Microcontroller Home Page http://www.ti.com/sc/micro

Networking Home Page http://www.ti.com/sc/docs/network/nbuhomex.htm

North America, South America, Central America

Product Information Center (PIC) (972) 644-5580

TI Literature Response Center U.S.A. (800) 477-8924

Software Registration/Upgrades (214) 638-0333 Fax: (214) 638-7742

U.S.A. Factory Repair/Hardware Upgrades (281) 274-2285

U.S. Technical Training Organization (972) 644-5580

Microcontroller Hotline (281) 274-2370 Fax: (281) 274-4203 Email: micro@ti.com

Microcontroller Modem BBS (281) 274-3700 8-N-1

DSP Hotline (281) 274-2320 Fax: (281) 274-2324 Email: [email protected]

DSP Modem BBS (281) 274-2323

DSP Internet BBS via anonymous ftp to ftp://ftp.ti.com/pub/tms320bbs

Networking Hotline Fax: (281) 274-4027

Email: [email protected]

Europe, Middle East, Africa

European Product Information Center (EPIC) Hotlines:

Multi-Language Support +33 1 30 70 11 69 Fax: +33 1 30 70 10 32 Email: [email protected]

Deutsch +49 8161 80 33 11 or +33 1 30 70 11 68

English +33 1 30 70 11 65

Francais +33 1 30 70 11 64

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Europe Customer Training Helpline Fax: +49 81 61 80 40 10

Asia-Pacific

Literature Response Center +852 2 956 7288 Fax: +852 2 956 2200

Hong Kong DSP Hotline +852 2 956 7268 Fax: +852 2 956 1002

Korea DSP Hotline +82 2 551 2804 Fax: +82 2 551 2828

Korea DSP Modem BBS +82 2 551 2914

Singapore DSP Hotline Fax: +65 390 7179

Taiwan DSP Hotline +886 2 377 1450 Fax: +886 2 377 2718

Taiwan DSP Modem BBS +886 2 376 2592

Taiwan DSP Internet BBS via anonymous ftp to ftp://dsp.ee.tit.edu.tw/pub/TI/

Japan

Product Information Center +0120-81-0026 (in Japan) Fax: +0120-81-0036 (in Japan)

+03-3457-0972 or (INTL) 813-3457-0972 Fax: +03-3457-1259 or (INTL) 813-3457-1259

DSP Hotline +03-3769-8735 or

(INTL) 813-3769-8735 Fax: +03-3457-7071 or (INTL) 813-3457-7071

DSP BBS via Nifty-Serve Type “Go TIASP”

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