Analog Devices SHARC ADSP-2136 Series Guida all'applicazione

ADSP-2136x SHARC® Processor

Hardware Reference

Includes ADSP-21362, ADSP-21363,

ADSP-21364, ADSP-21365, ADSP-21366

Revision 2.0, June 2009

Part Number

82-000501-01

Analog Devices, Inc.

One Technology Way

Norwood, Mass. 02062-9106

www.BDTIC.com/ADI

document may not be reproduced in any form without prior, express writ-

ten 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, the SHARC

logo, TigerSHARC, and VisualDSP++ are registered trademarks of Analog

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

their respective owners.

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ADSP-2136x SHARC Processor Hardware Reference iii

for the ADSP-21362/3/4/5/6 Processors

CONTENTS

PREFACE

Purpose of This Manual ............................................................... xxxi

Intended Audience ....................................................................... xxxi

Manual Contents ........................................................................ xxxii

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

Technical or Customer Support .................................................. xxxvi

Supported Processors ................................................................. xxxvii

Product Information ................................................................. xxxvii

MyAnalog.com ................................................................... xxxviii

Processor Product Information ............................................ xxxviii

Related Documents .............................................................. xxxix

Online Technical Documentation .............................................. xl

Accessing Documentation From VisualDSP++ ....................... xl

Accessing Documentation From Windows ............................ xli

Accessing Documentation From the Web .............................. xli

Conventions ................................................................................. xlii

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Contents

iv ADSP-2136x SHARC Processor Hardware Reference

for the ADSP-21362/3/4/5/6 Processors

INTRODUCTION

ADSP-2136x SHARC Design Advantages ..................................... 1-1

SHARC Family Product Offerings ........................................... 1-5

Processor Architectural Overview .................................................. 1-6

Processor Core ........................................................................ 1-7

Processor Peripherals ............................................................... 1-7

I/O Processor ..................................................................... 1-7

Digital Applications Interface (DAI) ................................... 1-9

Development Tools ..................................................................... 1-10

Architecture Enhancements ......................................................... 1-10

Parallel Port Enhancements ................................................... 1-10

I/O Architecture Enhancements ............................................ 1-11

Instruction Set Enhancements ............................................... 1-11

I/O PROCESSOR

DMA Controller Operation .......................................................... 2-2

DMA Transfers Between Internal Memory ............................... 2-3

General Procedure for Configuring DMA ...................................... 2-4

Summary ................................................................................ 2-5

IOP Registers ............................................................................... 2-5

Standard DMA Parameter Registers ......................................... 2-6

Standard DMA Status Registers ............................................... 2-8

Chaining DMA Status Registers .............................................. 2-9

Data Buffers ........................................................................... 2-9

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ADSP-2136x SHARC Processor Hardware Reference v

for the ADSP-21362/3/4/5/6 Processors

Contents

DMA Channel Allocation ..................................................... 2-10

DMA Channel Priority ............................................................... 2-11

DMA Channel Arbitration Modes ......................................... 2-14

Peripheral DMA Bus ......................................................... 2-14

Rotating Priority by Group .................................................... 2-15

DMA Channel Interrupts ...................................................... 2-16

Internal Transfer Completion ............................................ 2-16

DMA Channel Interrupt Priorities ......................................... 2-16

Interrupt Versus Channel Priorities .................................... 2-17

DMA Controller Addressing .................................................. 2-18

Internal Index Register Addressing ......................................... 2-18

DMA Chaining ........................................................................... 2-20

TCB Memory Storage ............................................................ 2-20

Chain Pointer Register ...................................................... 2-21

Chain Assignment ................................................................. 2-22

Starting Chain Loading ......................................................... 2-24

TCB Chain Loading Priority ................................................. 2-25

Chain Insert Mode (SPORTs Only) ................................... 2-25

DMA Start and Stop Conditions ................................................. 2-25

Configuring IOP/Core Interaction .............................................. 2-26

Interrupt-Driven I/O ............................................................. 2-27

Polling DMA Channel Status ................................................. 2-28

Standard DMA Status ....................................................... 2-29

Chaining DMA Status ....................................................... 2-29

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Contents

vi ADSP-2136x SHARC Processor Hardware Reference

for the ADSP-21362/3/4/5/6 Processors

TCB Storage ............................................................................... 2-30

Serial Port TCB .................................................................... 2-30

Parallel Port TCB .................................................................. 2-30

SPI TCB ............................................................................... 2-31

I/O Processor Register Access ...................................................... 2-32

IOP Access Conditions .......................................................... 2-32

Interrupt Latency ............................................................. 2-33

TCB Chain Loading Access ................................................... 2-34

IOP Register Access Arbitration ............................................. 2-34

IOP Performance .................................................................. 2-35

MEMORY-TO-MEMORY PORT DMA

Features ........................................................................................ 3-2

Functional Description ................................................................. 3-2

DMA Channels ....................................................................... 3-2

Buffer ..................................................................................... 3-3

Interrupts ............................................................................... 3-3

Data Throughput ......................................................................... 3-3

Programming Model ..................................................................... 3-4

Programming Example .................................................................. 3-4

PARALLEL PORT

Features ........................................................................................ 4-2

Pin Descriptions ........................................................................... 4-3

Multiplexed Pin Functions ...................................................... 4-4

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ADSP-2136x SHARC Processor Hardware Reference vii

for the ADSP-21362/3/4/5/6 Processors

Contents

Functional Description ............................................................ 4-4

Multiplexed Operation ........................................................ 4-4

Address Cycles .................................................................... 4-4

Data Cycles ......................................................................... 4-5

Data Buffers ............................................................................ 4-6

Read Path ........................................................................... 4-6

Write Path .......................................................................... 4-7

Operation Modes .................................................................... 4-8

8-Bit Mode ......................................................................... 4-8

16-Bit Mode ....................................................................... 4-9

Parallel Port Registers .................................................................. 4-10

Control Register (PPCTL) ..................................................... 4-11

Data Buffer Register (RXPP/TXPP) ....................................... 4-11

Data Transfer Types .................................................................... 4-11

DMA Transfers ...................................................................... 4-12

DMA Internal Word Count Register (ICPP) ...................... 4-12

External Word Count Register (ECPP) .............................. 4-12

Chained DMA Transfers ........................................................ 4-13

DMA Chain Pointer Register (PPCP) ................................ 4-13

DMA Transfer Rules ......................................................... 4-13

Core-Driven Transfers ........................................................... 4-14

Interrupt Driven Accesses .................................................. 4-15

Status-Driven Transfers (Polling) ....................................... 4-16

Known-Duration Accesses ................................................. 4-16

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Contents

viii ADSP-2136x SHARC Processor Hardware Reference

for the ADSP-21362/3/4/5/6 Processors

Core-Stall Driven Transfers ............................................... 4-17

Interrupts ................................................................................... 4-18

DMA Interrupts .................................................................... 4-19

Core Interrupts ..................................................................... 4-19

Throughput ................................................................................ 4-19

8-Bit Access .......................................................................... 4-20

16-Bit Access ........................................................................ 4-21

8-Bit Versus 16-Bit SRAM Modes ......................................... 4-22

Parallel Port Effect Latency .................................................... 4-23

Programming Model ................................................................... 4-23

Configuring the Parallel Port for DMA .................................. 4-24

Configuring a Chained DMA ................................................ 4-24

Configuring the Parallel Port for Core Access ......................... 4-25

Programming Examples .............................................................. 4-26

DIGITAL APPLICATION INTERFACE

Features ........................................................................................ 5-1

Functional Description ................................................................. 5-3

Signal Naming Conventions ......................................................... 5-5

DAI Peripherals ............................................................................ 5-6

I/O Pin Buffers ....................................................................... 5-7

Pin Buffers as Signal Output ............................................... 5-8

Pin Buffers as Signal Input ................................................ 5-10

Programmable Pull-Up Resistors ....................................... 5-11

Pin Buffers as Open Drain ................................................ 5-11

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ADSP-2136x SHARC Processor Hardware Reference ix

for the ADSP-21362/3/4/5/6 Processors

Contents

Miscellaneous Buffers ............................................................ 5-12

Signal Routing Matrix by Groups ........................................... 5-13

DAI Group Routing .............................................................. 5-14

Rules for SRU Connections ................................................... 5-16

Making SRU Connections ..................................................... 5-16

Routing Capabilities .............................................................. 5-20

Default Routing .......................................................................... 5-21

Interrupt Controller .................................................................... 5-24

System versus Exception Interrupts ........................................ 5-24

Functional Description .......................................................... 5-25

Interrupt Channels ................................................................ 5-25

Interrupt Priorities ................................................................ 5-25

Miscellaneous Interrupts ........................................................ 5-26

Core versus DAI Interrupts .................................................... 5-26

Interrupt Events .................................................................... 5-27

Servicing Interrupts ............................................................... 5-28

Debug Features ........................................................................... 5-29

Shadow Registers ................................................................... 5-29

Loop Back Routing ................................................................ 5-30

Programming Model ................................................................... 5-31

SERIAL PORTS

Features ........................................................................................ 6-4

Pin Descriptions ........................................................................... 6-6

SRU Configuration ....................................................................... 6-6

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Contents

x ADSP-2136x SHARC Processor Hardware Reference

for the ADSP-21362/3/4/5/6 Processors

SRU SPORT Receive Master ................................................... 6-7

SRU SPORT Signal Integrity .................................................. 6-7

Functional Description ................................................................. 6-9

Registers ..................................................................................... 6-10

Control Registers (SPCTLx) .................................................. 6-12

Multichannel Control Registers (SPMCTLxy) ....................... 6-12

Data Buffers ......................................................................... 6-13

Transmit Buffers (TXSPxA/B) ........................................... 6-13

Transmit Path ............................................................... 6-14

Receive Buffers (RXSPxA/B) ............................................. 6-14

Receive Path ................................................................. 6-15

Buffer Status ..................................................................... 6-15

Multichannel Buffer Status ............................................... 6-17

Selecting Operating Modes ......................................................... 6-18

Mode Selection ..................................................................... 6-19

Data Word Formats .................................................................... 6-20

Word Length (SLEN) ............................................................ 6-20

Endian Format (LSBF) .......................................................... 6-21

Data Packing (PACK) ........................................................... 6-21

Data Type (DTYPE) ............................................................. 6-22

Companding the Data Stream ............................................... 6-23

Companding As a Function ................................................... 6-24

Clock Signal Options .................................................................. 6-25

Master Clock Divider Registers (DIVx) ................................. 6-25

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