Analog Devices ADSP-BF53x Blackfin Service-Handbuch

ADSP-BF53x/BF56x Blackfin®Processor

Programming Reference

Revision 1.2, February 2007

Part Number

82-000556-01

Analog Devices, Inc.

One Technology Way

Norwood, Mass. 02062-9106

ment may not be reproduced in any form without prior, express written

consent from Analog Devices, Inc.

Printed in the USA.

Disclaimer

Analog Devices, Inc. reserves the right to change this product without

prior notice. Information furnished by Analog Devices is believed to be

accurate and reliable. However, no responsibility is assumed by Analog

Devices for its use; nor for any infringement of patents or other rights of

third parties which may result from its use. No license is granted by impli-

cation or otherwise under the patent rights of Analog Devices, Inc.

Trademark and Service Mark Notice

The Analog Devices logo, Blackfin, EZ-KIT Lite, SHARC, TigerSHARC,

and VisualDSP++ are registered trademarks of Analog Devices, Inc.

All other brand and product names are trademarks or service marks of

their respective owners.

ADSP-BF53x/BF56x Blackfin Processor Programming Reference iii

CONTENTS

PREFACE

Purpose of This Manual ................................................................ xxv

Intended Audience ........................................................................ xxv

Manual Contents ......................................................................... xxvi

What’s New in This Manual ........................................................ xxvii

Technical or Customer Support .................................................. xxviii

Supported Processors .................................................................... xxix

Product Information .................................................................... xxix

MyAnalog.com ........................................................................ xxx

Processor Product Information ................................................. xxx

Related Documents ................................................................ xxxi

Online Technical Documentation .......................................... xxxii

Accessing Documentation From VisualDSP++ .................. xxxiii

Accessing Documentation From Windows ........................ xxxiii

Accessing Documentation From the Web .......................... xxxiv

Contents

iv ADSP-BF53x/BF56x Blackfin Processor Programming Reference

Printed Manuals .................................................................... xxxiv

VisualDSP++ Documentation Set ...................................... xxxv

Hardware Tools Manuals ................................................... xxxv

Processor Manuals ............................................................. xxxv

Data Sheets ....................................................................... xxxv

Conventions ............................................................................... xxxvi

INTRODUCTION

Core Architecture ......................................................................... 1-1

Memory Architecture .................................................................... 1-4

Internal Memory ..................................................................... 1-5

External Memory .................................................................... 1-6

I/O Memory Space .................................................................. 1-6

Event Handling ............................................................................ 1-6

Core Event Controller (CEC) .................................................. 1-8

System Interrupt Controller (SIC) ........................................... 1-8

Syntax Conventions ...................................................................... 1-8

Case Sensitivity ....................................................................... 1-8

Free Format ............................................................................ 1-9

Instruction Delimiting ............................................................ 1-9

Comments ............................................................................ 1-10

Notation Conventions ................................................................ 1-10

Behavior Conventions ................................................................. 1-12

ADSP-BF53x/BF56x Blackfin Processor Programming Reference v

Contents

Glossary ...................................................................................... 1-13

Functional Units ................................................................... 1-14

Arithmetic Status Flags .......................................................... 1-15

Fractional Convention ........................................................... 1-16

Saturation ............................................................................. 1-17

Rounding and Truncating ...................................................... 1-19

Automatic Circular Addressing .............................................. 1-21

COMPUTATIONAL UNITS

Using Data Formats ...................................................................... 2-4

Binary String ........................................................................... 2-4

Unsigned ................................................................................. 2-4

Signed Numbers: Two’s-Complement ....................................... 2-5

Fractional Representation: 1.15 ................................................ 2-5

Data Register File .................................................................... 2-7

Accumulator Registers ............................................................. 2-8

Data Types .................................................................................. 2-11

Endianess .............................................................................. 2-13

ALU Data Types .................................................................... 2-14

Multiplier Data Types ............................................................ 2-14

Shifter Data Types ................................................................. 2-15

Arithmetic Formats Summary ................................................ 2-16

Contents

vi ADSP-BF53x/BF56x Blackfin Processor Programming Reference

Using Multiplier Integer and Fractional Formats .................... 2-17

Rounding Multiplier Results ................................................. 2-19

Unbiased Rounding .......................................................... 2-20

Biased Rounding .............................................................. 2-22

Truncation ....................................................................... 2-23

Special Rounding Instructions ............................................... 2-24

Using Computational Status ....................................................... 2-24

ASTAT Register .......................................................................... 2-25

Arithmetic Logic Unit (ALU) ...................................................... 2-26

ALU Operations ................................................................... 2-26

Single 16-Bit Operations .................................................. 2-27

Dual 16-Bit Operations .................................................... 2-27

Quad 16-Bit Operations ................................................... 2-28

Single 32-Bit Operations .................................................. 2-29

Dual 32-Bit Operations .................................................... 2-29

ALU Instruction Summary .................................................... 2-30

ALU Division Support Features ............................................. 2-34

Special SIMD Video ALU Operations ................................... 2-35

Multiply Accumulators (Multipliers) ........................................... 2-35

Multiplier Operation ............................................................. 2-36

Placing Multiplier Results in Multiplier

Accumulator Registers .................................................... 2-37

Rounding or Saturating Multiplier Results ........................ 2-37

Saturating Multiplier Results on Overflow ............................. 2-38

ADSP-BF53x/BF56x Blackfin Processor Programming Reference vii

Contents

Multiplier Instruction Summary ............................................ 2-38

Multiplier Instruction Options .......................................... 2-40

Multiplier Data Flow Details ................................................. 2-42

Multiply Without Accumulate ............................................... 2-44

Special 32-Bit Integer MAC Instruction ................................. 2-46

Dual MAC Operations .......................................................... 2-47

Barrel Shifter (Shifter) ................................................................. 2-48

Shifter Operations ................................................................. 2-48

Two-Operand Shifts .......................................................... 2-49

Immediate Shifts ........................................................... 2-49

Three-Operand Shifts ....................................................... 2-50

Immediate Shifts ........................................................... 2-50

Bit Test, Set, Clear, Toggle ................................................ 2-52

Field Extract and Field Deposit ......................................... 2-52

Shifter Instruction Summary .................................................. 2-53

OPERATING MODES AND STATES

User Mode .................................................................................... 3-3

Protected Resources and Instructions ....................................... 3-4

Protected Memory ................................................................... 3-5

Entering User Mode ................................................................ 3-5

Example Code to Enter User Mode Upon Reset ................... 3-5

Return Instructions That Invoke User Mode ........................ 3-5

Contents

viii ADSP-BF53x/BF56x Blackfin Processor Programming Reference

Supervisor Mode .......................................................................... 3-7

Non-OS Environments ........................................................... 3-7

Example Code for Supervisor Mode Coming

Out of Reset .................................................................... 3-8

Emulation Mode .......................................................................... 3-9

Idle State ...................................................................................... 3-9

Example Code for Transition to Idle State .............................. 3-10

Reset State .................................................................................. 3-10

System Reset and Powerup .......................................................... 3-12

Hardware Reset ..................................................................... 3-13

SYSCR Register .................................................................... 3-14

Software Resets and Watchdog Timer .................................... 3-14

SWRST Register ................................................................... 3-15

Core-Only Software Reset ..................................................... 3-16

Core and System Reset .......................................................... 3-16

PROGRAM SEQUENCER

Introduction ................................................................................. 4-1

Sequencer Related Registers ..................................................... 4-5

Instruction Pipeline ...................................................................... 4-7

Branches .................................................................................... 4-10

Direct Short and Long Jumps ................................................ 4-11

Direct Call ............................................................................ 4-12

Indirect Branch and Call ....................................................... 4-12

PC-Relative Indirect Branch and Call .................................... 4-13

ADSP-BF53x/BF56x Blackfin Processor Programming Reference ix

Contents

Subroutines ........................................................................... 4-13

Stack Variables and Parameter Passing ................................ 4-15

Condition Code Flag ............................................................. 4-18

Conditional Branches ........................................................ 4-19

Conditional Register Move ................................................ 4-20

Branch Prediction .................................................................. 4-20

Hardware Loops .......................................................................... 4-21

Two-Dimensional Loops ........................................................ 4-24

Loop Unrolling ..................................................................... 4-26

Saving and Resuming Loops .................................................. 4-27

Example Code for Using Hardware Loops in an ISR .......... 4-28

Events and Interrupts .................................................................. 4-29

System Interrupt Processing ................................................... 4-31

System Peripheral Interrupts .................................................. 4-33

SIC_IWR Register ................................................................. 4-34

SIC_ISR Register .................................................................. 4-35

SIC_IMASK Register ............................................................ 4-36

System Interrupt Assignment Registers (SIC_IARx) ................ 4-37

Core Event Controller Registers ............................................. 4-38

IMASK Register ................................................................ 4-38

ILAT Register ................................................................... 4-39

IPEND Register ................................................................ 4-40

Event Vector Table ................................................................ 4-41

Contents

x ADSP-BF53x/BF56x Blackfin Processor Programming Reference

Return Registers and Instructions .......................................... 4-42

Executing RTX, RTN, or RTE in a Lower

Priority Event ................................................................ 4-45

Emulation Interrupt .............................................................. 4-45

Reset Interrupt ...................................................................... 4-46

NMI (Nonmaskable Interrupt) .............................................. 4-46

Exceptions ............................................................................ 4-47

Hardware Error Interrupt ...................................................... 4-47

Core Timer Interrupt ............................................................ 4-47

General-purpose Interrupts (IVG7-IVG15) ............................ 4-47

Interrupt Processing .................................................................... 4-48

Global Enabling/Disabling of Interrupts ................................ 4-48

Servicing Interrupts ............................................................... 4-48

Software Interrupts ............................................................... 4-50

Nesting of Interrupts ............................................................. 4-51

Non-nested Interrupts ...................................................... 4-51

Nested Interrupts ............................................................. 4-51

Example Prolog Code for Nested Interrupt

Service Routine .......................................................... 4-53

Example Epilog Code for Nested Interrupt

Service Routine .......................................................... 4-54

Logging of Nested Interrupt Requests ........................... 4-55

Self-Nesting of Core Interrupts ......................................... 4-55

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Analog Devices Computerhardware Handbücher

Analog Devices

Analog Devices ADT7473 Bedienungsanleitung

Analog Devices

Analog Devices SHARC ADSP-21367 Bedienungsanleitung

Analog Devices

Analog Devices ADDS-218X-ICE-2.5V Bedienungsanleitung

Analog Devices

Analog Devices EVAL-AD7606SDZ Bedienungsanleitung

Analog Devices

Analog Devices MicroConverter ADuC832 Bedienungsanleitung

Analog Devices

Analog Devices ADM1060 Bedienungsanleitung

Analog Devices

Analog Devices DC2745A Kurzanleitung zur Einrichtung

Analog Devices

Analog Devices LTM4683 Bedienungsanleitung

Analog Devices

Analog Devices LTC3728EG Bedienungsanleitung

Analog Devices

Analog Devices Linear Technology LTC6953 Kurzanleitung zur Einrichtung

Analog Devices

Analog Devices EVAL-ADN4650EB1Z Bedienungsanleitung

Analog Devices

Analog Devices HPUSB Bedienungsanleitung

Analog Devices

Analog Devices EZ-KIT LITE ADSP-2191 Bedienungsanleitung

Analog Devices

Analog Devices TigerSHARC ADSP-TS201S Bedienungsanleitung

Analog Devices

Analog Devices MICROCONVERTER ADUC812 Bedienungsanleitung

Analog Devices

Analog Devices MAX77831 Bedienungsanleitung

Analog Devices

Analog Devices EVAL-ADAU1860 Bedienungsanleitung

Analog Devices

Analog Devices AD9843A Bedienungsanleitung

Analog Devices

Analog Devices EVAL-ADA4351-2 Bedienungsanleitung

Analog Devices

Analog Devices Blackfin ADSP-BF537 Anwendungshandbuch

Analog Devices

Analog Devices SHARC Series Bedienungsanleitung

Analog Devices

Analog Devices EV-RPG2 Bedienungsanleitung

Analog Devices

Analog Devices AD9830 Bedienungsanleitung

Analog Devices

Analog Devices ADRV902 Series Bedienungsanleitung

Beliebte Computerhardware Handbücher anderer Marken

EMC2

EMC2 VNX Series Betriebsanleitung

Panasonic

Panasonic DV0PM20105 Bedienungsanleitung

Mitsubishi Electric

Mitsubishi Electric Q81BD-J61BT11 Bedienungsanleitung

Gigabyte

Gigabyte B660M DS3H AX DDR4 Bedienungsanleitung

Raidon

Raidon iT2300 Bedienungsanleitung

National Instruments

National Instruments PXI-8186 Bedienungsanleitung

Hauppauge

Hauppauge WinTV-HVR-2250 Bedienungsanleitung

Kontron

Kontron CP6002 Bedienungsanleitung

Manhattan

Manhattan 702843 Bedienungsanleitung

Aphex

Aphex 230 Bedienungsanleitung

AMD

AMD Phenom II Betriebshandbuch

Intel

Intel NUC 12 Pro Bedienungsanleitung

dbx

dbx Zone Pro 1260 Bedienungsanleitung

Galaxy

Galaxy GHDX2-2430S-24F4D Bedienungsanleitung

Intel

Intel AXXRMFBU4 Bedienungsanleitung

Kontron

Kontron DIMM-PC/MD Bedienungsanleitung

ST X-NUCLEO-SAFEA1B Betriebsanleitung

STEINWAY LYNGDORF

STEINWAY LYNGDORF SP-1 Bedienungsanleitung