Texas Instruments TMS320C3x User Manual

Tms320c3x user’s guide

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TMS320C3x

User’s Guide

Literature Number: SPRU031E

2558539-9761 revision L

July 1997

Printed on Recycled Paper

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Table of contents

Document Outline

IMPORTANT NOTICE
Read This First
- About This Manual
- Notational Conventions
- Information About Cautions
- Related Documentation From Texas Instruments
- References
- If You Need Assistance
- Trademarks
Contents
Figures
Tables
Examples
Introduction
- TMS320C3x Devices
- Typical Applications
Architectural Overview
- Overview
- Central Processing Unit (CPU)
- CPU Primary Register File
- Other Registers
- Memory Organization
  - RAM, ROM, and Cache
  - Memory Addressing Modes
- Internal Bus Operation
- External Memory Interface
  - TMS320C32 16- and 32-Bit Program Memory
  - TMS320C32 8-, 16-, and 32-Bit Data Memory
- Interrupts
- Peripherals
  - Timers
  - Serial Ports
- Direct Memory Access (DMA)
- TMS320C30, TMS320C31, and TMS320C32 Differences
CPU Registers
- CPU Multiport Register File
- Other Registers
  - Program-Counter (PC) Register
  - Instruction Register (IR)
- Reserved Bits and Compatibility
Memory and the Instruction Cache
- Memory
  - Memory Maps
  - Peripheral Bus Memory Map
- Reset/Interrupt/Trap Vector Map
- Instruction Cache
Data Formats and Floating-Point Operation
- Integer Formats
  - Short-Integer Format
  - Single-Precision Integer Format
- Unsigned-Integer Formats
  - Short Unsigned-Integer Format
  - Single-Precision Unsigned-Integer Format
- Floating-Point Formats
- Floating-Point Conversion (IEEE Std. 754)
  - Converting IEEE Format to 2s-Complement TMS320C3x Floating-Point Format
    - IEEE-to-TMS320C3x Floating-Point Format Conversion
  - Converting 2s-Complement TMS320C3x Floating-Point Format to IEEE Format
    - TMS320C3x-to-IEEE Floating-Point Format Conversion
- Floating-Point Multiplication
- Floating-Point Addition and Subtraction
- Normalization Using the NORM Instruction
- Rounding (RND Instruction)
- Floating-Point to Integer Conversion (FIX Instruction)
- Integer to Floating-Point Conversion (FLOAT Instruction)
- Fast Logarithms on a Floating-Point Device
  - Example of Fast Logarithm on a Floating-Point Device
  - Points to Consider
Addressing Modes
- Addressing Types
- Register Addressing
- Direct Addressing
- Indirect Addressing
- Immediate Addressing
- PC-Relative Addressing
- Circular Addressing
- Bit-Reversed Addressing
- Aligning Buffers With the TMS320 Floating-Point DSP Assembly Language Tools
- System and User Stack Management
Program Flow Control
- Repeat Modes
- Delayed Branches
- Calls, Traps, and Returns
- Interlocked Operations
- Reset Operation
- Interrupts
- DMA Interrupts
- Traps
  - Initialization of Traps and Interrupts
  - Operation of Traps
- Power Management Modes
  - IDLE2 Power-Down Mode
  - LOPOWER
Pipeline Operation
- Pipeline Structure
- Pipeline Conflicts
- Resolving Register Conflicts
- Memory Access for Maximum Performance
- Clocking Memory Accesses
  - Program Fetches
  - Data Loads and Stores
TMS320C30 and TMS320C31 External-Memory Interface
- Overview
- Memory Interface Signals
  - TMS320C30 Memory Interface Signals
  - TMS320C31 Memory Interface Signals
- Memory Interface Control Registers
  - Primary-Bus Control Register
  - Expansion-Bus Control Register
- Programmable Wait States
- Programmable Bank Switching
- External Memory Interface Timing
TMS320C32 Enhanced External Memory Interface
- TMS320C32 Memory Features
- TMS320C32 Memory Overview
- Configuration
  - External Interface Control Registers
  - Using Physical Memory Width and Data-Type Size Fields
- Programmable Wait States
- Programmable Bank Switching
- 32-Bit-Wide Memory Interface
- 16-Bit-Wide Memory Interface
- 8-Bit-Wide Memory Interface
- External Ready Timing Improvement
- Bus Timing
Using the TMS320C31 and TMS320C32 Boot Loaders
- TMS320C31 Boot Loader
- TMS320C32 Boot Loader
Peripherals
- Timers
- Serial Ports
- DMA Controller
Assembly Language Instructions
- Instruction Set
- Instruction Set Summary
- Parallel Instruction Set Summary
- Group Addressing Mode Instruction Encoding
- Condition Codes and Flags
- Individual Instructions
  - Symbols and Abbreviations
  - Optional Assembler Syntax
  - Individual Instruction Descriptions
    - EXAMPLE
    - ABSF
    - ABSF||STF
    - ABSI
    - ABSI||STI
    - ADDC
    - ADDC3
    - ADDF
    - ADDF3
    - ADDF3||STF
    - ADDI
    - ADDI3
    - ADDI3||STI
    - AND
    - AND3
    - AND3||STI
    - ANDN
    - ANDN3
    - ASH
    - ASH3
    - ASH3||STI
    - Bcond
    - BcondD
    - BR
    - BRD
    - CALL
    - CALLcond
    - CMPF
    - CMPF3
    - CMPI
    - CMPI3
    - DBcond
    - DBcondD
    - FIX
    - FIX||STI
    - FLOAT
    - FLOAT||STF
    - IACK
    - IDLE
    - IDLE2
    - LDE
    - LDF
    - LDFcond
    - LDFI
    - LDF||LDF
    - LDF||STF
    - LDI
    - LDIcond
    - LDII
    - LDI||LDI
    - LDI||STI
    - LDM
    - LDP
    - LOPOWER
    - LSH
    - LSH3
    - LSH3||STI
    - MAXSPEED
    - MPYF
    - MPYF3
    - MPYF3||ADDF3
    - MPYF3||STF
    - MPYF3||SUBF3
    - MPYF3||ADDF3
    - MPYF3||SUBF3
    - MPYI
    - MPYI3
    - MPYI3||ADDI3
    - MPYI3||STI
    - MPYI3||SUBI3
    - NEGB
    - NEGF
    - NEGF||STF
    - NEGI
    - NEGI||STI
    - NOP
    - NORM
    - NOT
    - NOT||STI
    - OR
    - OR3
    - OR3||STI
    - POP
    - POPF
    - PUSH
    - PUSHF
    - RETIcond
    - RETScond
    - RND
    - ROL
    - ROLC
    - ROR
    - RORC
    - RPTB
    - RPTS
    - SIGI
    - STF
    - STFI
    - STF||STF
    - STI
    - STII
    - STI||STI
    - SUBB
    - SUBB3
    - SUBC
    - SUBF
    - SUBF3
    - SUBF3||STF
    - SUBI
    - SUBI3
    - SUBI3||STI
    - SUBRB
    - SUBRF
    - SUBRI
    - SWI
    - TRAPcond
    - TSTB
    - TSTB3
    - XOR
    - XOR3
    - XOR3||STI
Instruction Opcodes
TMS320C31 Boot Loader Source Code
TMS320C32 Boot Loader Source Code
- Boot-Loader Source Code Description
- Boot-Loader Source Code Listing
Glossary
Index

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