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    TMS320C55x DSPMnemonic Instruction SetReference Guide

    Literature Number: SPRU374G

    October 2002

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    IMPORTANT NOTICE

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    Copyright 2002, Texas Instruments Incorporated

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    iiiContents

    Preface

    Read This First

    About This Manual

    The TMS320C55x DSP is a fixed-point digital signal processor (DSP) in the

    TMS320 family, and it can use either of two forms of the instruction set: a

    mnemonic form or an algebraic form. This book is a reference for the mnemonic

    form of the instruction set. It contains information about the instructions used

    for all types of operations. For information on the algebraic instruction set, see

    TMS320C55x DSP Algebraic Instruction Set Reference Guide, SPRU375.

    Notational Conventions

    This book uses the following conventions.

    - In syntax descriptions, the instruction is in a bold typeface. Portions of a

    syntax in bold must be entered as shown. Here is an example of an

    instruction syntax:

    LMS Xmem, Ymem, ACx, ACy

    LMS is the instruction, and it has four operands: Xmem, Ymem, ACx, and

    ACy. When you use LMS, the operands should be actual dual data-

    memory operand values and accumulator values. A comma and a space

    (optional) must separate the four values.

    - Square brackets, [ and ], identify an optional parameter. If you use an

    optional parameter, specify the information within the brackets; do not type

    the brackets themselves.

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    Related Documentation From Texas Instruments

    iv

    Related Documentation From Texas Instruments

    The following books describe the C55x devices and related support tools. Toobtain a copy of any of these TI documents, call the Texas Instruments

    Literature Response Center at (800) 477-8924. When ordering, please identify

    the book by its title and literature number.

    TMS320C55x Technical Overview (SPRU393). This overview is an

    introduction to the TMS320C55x digital signal processor (DSP). The

    TMS320C55x is the latest generation of fixed-point DSPs in the

    TMS320C5000 DSP platform. Like the previous generations, this

    processor is optimized for high performance and low-power operation.

    This book describes the CPU architecture, low-power enhancements,

    and embedded emulation features of the TMS320C55x.

    TMS320C55x DSP CPU Reference Guide (literature number SPRU371)

    describes the architecture, registers, and operation of the CPU for the

    TMS320C55x digital signal processors (DSPs).

    TMS320C55x DSP Algebraic Instruction Set Reference Guide(literature

    number SPRU375) describes the algebraic instructions individually. It

    also includes a summary of the instruction set, a list of the instruction

    opcodes, and a cross-reference to the mnemonic instruction set.

    TMS320C55x Programmers Guide(literature number SPRU376) describes

    ways to optimize C and assembly code for the TMS320C55x DSPs and

    explains how to write code that uses special features and instructions of

    the DSP.

    TMS320C55x Optimizing C Compiler Users Guide (literature number

    SPRU281) describes the TMS320C55x C Compiler. This C compiler

    accepts ANSI standard C source code and produces assembly language

    source code for TMS320C55x devices.

    TMS320C55x Assembly Language Tools Users Guide(literature number

    SPRU280) 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 TMS320C55x devices.

    Trademarks

    TMS320, TMS320C54x, TMS320C55x, C54x, and C55x are trademarks of

    Texas Instruments.

    Related Documentation From Texas Instruments / Trademarks

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    Contents

    v

    Contents

    1 Terms, Symbols, and Abbreviations 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    Lists and defines the terms, symbols, and abbreviations used in the TMS320C55x DSPmnemonic instruction set summary and in the individual instruction descriptions.

    1.1 Instruction Set Terms, Symbols, and Abbreviations 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.2 Instruction Set Conditional (cond) Fields 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3 Affect of Status Bits 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3.1 Accumulator Overflow Status Bit (ACOVx) 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.2 C54CM Status Bit 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.3 CARRY Status Bit 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.4 FRCT Status Bit 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.5 INTM Status Bit 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.6 M40 Status Bit 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.7 RDM Status Bit 1-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.8 SATA Status Bit 1-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.9 SATD Status Bit 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.10 SMUL Status Bit 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.11 SXMD Status Bit 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.3.12 Test Control Status Bit (TCx) 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.4 Instruction Set Notes and Rules 1-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.4.1 Notes 1-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.4.2 Rules 1-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    1.5 Nonrepeatable Instructions 1-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    2 Parallelism Features and Rules 2-1. . . . . . . . . . . . .