Analog Devices SHARC ADSP-214 Series Guida all'applicazione

ADSP-214xx SHARC®Processor

Hardware Reference

Includes ADSP-2146x, ADSP-2147x,

ADSP-2148x Product Families

Revision 0.3, July 27, 2010

Part Number

82-000469-01

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

Devices, Inc.

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

their respective owners.

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ADSP-214xx SHARC Processor Hardware Reference iii

CONTENTS

PREFACE

Purpose of This Manual ................................................................ lxi

Intended Audience ........................................................................ lxi

Manual Contents ......................................................................... lxii

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

Technical or Customer Support ................................................... lxvi

Registration for MyAnalog.com ............................................. lxvi

EngineerZone ....................................................................... lxvii

Social Networking Web Sites ................................................ lxvii

Supported Processors .................................................................. lxvii

Product Information ................................................................. lxviii

Analog Devices Web Site ..................................................... lxviii

VisualDSP++ Online Documentation ................................. lxviii

Technical Library CD ............................................................ lxix

Notation Conventions .................................................................. lxx

INTRODUCTION

Design Advantages ........................................................................ 1-1

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Contents

iv ADSP-214xx SHARC Processor Hardware Reference

SHARC Family Product Offerings ........................................... 1-2

Processor Architectural Overview .................................................. 1-2

Processor Core ........................................................................ 1-2

I/O Peripherals ....................................................................... 1-3

I/O Processor ..................................................................... 1-3

Digital Audio Interface (DAI) ............................................. 1-3

Interrupt Controller ........................................................... 1-4

Signal Routing Unit ............................................................ 1-4

Digital Peripheral Interface (DPI) ....................................... 1-4

Interrupt Controller ........................................................... 1-4

Signal Routing Unit 2 ......................................................... 1-5

Development Tools ....................................................................... 1-5

Differences from Previous Processors ............................................. 1-5

I/O Architecture Enhancements .............................................. 1-6

I/O PROCESSOR

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

DMA Channel Registers ............................................................... 2-3

DMA Channel Allocation ....................................................... 2-3

Standard DMA Parameter Registers ......................................... 2-4

Extended DMA Parameter Registers ........................................ 2-8

Data Buffers ......................................................................... 2-10

Chain Pointer Registers ......................................................... 2-11

TCB Storage ............................................................................... 2-13

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ADSP-214xx SHARC Processor Hardware Reference v

Contents

Serial Port TCB ..................................................................... 2-14

SPI TCB ............................................................................... 2-14

UART TCB .......................................................................... 2-15

Link Port TCB ...................................................................... 2-15

FIR Accelerator TCB ............................................................. 2-16

IIR Accelerator TCB .............................................................. 2-17

FFT Accelerator TCB ............................................................ 2-18

External Port TCB ................................................................. 2-19

Clocking ..................................................................................... 2-22

Functional Description ............................................................... 2-22

Automated Data Transfer ....................................................... 2-22

DMA Transfer Types ............................................................. 2-23

DMA Direction ..................................................................... 2-24

Internal to External Memory ............................................. 2-24

Peripheral to Internal Memory .......................................... 2-24

Peripheral to External Memory (SPORTs) .......................... 2-25

Internal Memory to Internal Memory ................................ 2-25

DMA Controller Addressing .................................................. 2-25

Internal Index Register Addressing ..................................... 2-27

External Index Register Addressing .................................... 2-28

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

DMA Start and Stop Conditions ............................................ 2-29

Operating Modes ........................................................................ 2-30

DMA Chaining ..................................................................... 2-32

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Contents

vi ADSP-214xx SHARC Processor Hardware Reference

TCB Memory Storage ....................................................... 2-32

Chain Assignment ............................................................ 2-33

Starting Chain Loading .................................................... 2-34

TCB Chain Loading Priority ............................................. 2-35

Chain Insert Mode (SPORTs Only) .................................. 2-36

Fixed DMA Channel Arbitration ........................................... 2-36

Peripheral DMA Bus ......................................................... 2-42

External Port DMA Bus .................................................... 2-43

SPORT/External Port DMA Bus ....................................... 2-43

Rotating DMA Channel Arbitration ...................................... 2-44

Rotating Priority by Group ............................................... 2-44

Interrupts ................................................................................... 2-45

Sources ................................................................................. 2-45

Unchained DMA Interrupts .............................................. 2-45

Chained DMA Interrupts ................................................. 2-46

Transfer Completion Types .................................................... 2-46

Internal Transfer Completion ............................................ 2-47

Access Completion ........................................................... 2-47

Core Single Word Transfer Interrupts .................................... 2-47

Interrupt Versus Channel Priorities ........................................ 2-48

Debug Features ........................................................................... 2-49

Emulation Considerations ..................................................... 2-49

Effect Latency ............................................................................ 2-49

Write Effect Latency ............................................................. 2-49

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ADSP-214xx SHARC Processor Hardware Reference vii

Contents

IOP Effect Latency ................................................................ 2-49

IOP Throughput ................................................................... 2-50

Programming Model ................................................................... 2-50

General Procedure for Configuring DMA .............................. 2-51

EXTERNAL PORT

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

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

Pin Multiplexing ..................................................................... 3-3

Clocking AMI/SDRAM ................................................................ 3-5

Clocking AMI/DDR2 ................................................................... 3-6

External Port Arbitration ............................................................... 3-7

Functional Description ................................................................. 3-7

Operating Mode .................................................................... 3-10

Arbitration Freezing .......................................................... 3-10

Asynchronous Memory Interface ................................................. 3-10

Features ................................................................................. 3-11

Functional Description .......................................................... 3-11

Asynchronous Reads ......................................................... 3-12

Asynchronous Writes ......................................................... 3-12

Parameter Timing ............................................................. 3-14

Idle Cycles ........................................................................ 3-14

Address Mapping .............................................................. 3-14

Operating Modes ................................................................... 3-15

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Contents

viii ADSP-214xx SHARC Processor Hardware Reference

Data Packing .................................................................... 3-15

External Access Extension ................................................ 3-15

Predictive Reads ............................................................... 3-16

SDRAM Controller

(ADSP-2147x/ADSP-2148x) ................................................... 3-17

Features ................................................................................ 3-17

Functional Description ......................................................... 3-18

SDRAM Commands ........................................................ 3-20

Load Mode Register ...................................................... 3-20

Bank Activation ............................................................ 3-21

Single Precharge ........................................................... 3-21

Precharge All ................................................................ 3-22

Read/Write ................................................................... 3-22

Auto-Refresh ................................................................ 3-24

No Operation/Command Inhibit .................................. 3-24

Command Truth Table ................................................. 3-24

Address Mapping .............................................................. 3-25

Address Translation Options ......................................... 3-26

Address Width Settings ................................................. 3-27

16-Bit Address Mapping ................................................... 3-28

Refresh Rate Control ........................................................ 3-32

Internal SDRAM Bank Access ........................................... 3-34

Single Bank Access ........................................................ 3-34

Multibank Access .......................................................... 3-35

Multi Bank Operation with Data Packing ..................... 3-36

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ADSP-214xx SHARC Processor Hardware Reference ix

Contents

Timing Parameters ............................................................ 3-37

Fixed Timing Parameters ............................................... 3-37

Data Mask ........................................................................ 3-38

Resetting the Controller .................................................... 3-38

Operating Modes ................................................................... 3-38

Parallel Connection of SDRAMs ....................................... 3-38

Buffering Controller for Multiple SDRAMs ................... 3-39

SDRAM Read Optimization ............................................. 3-40

Core Accesses ................................................................ 3-41

DMA Access ................................................................. 3-43

Notes on Read Optimization ......................................... 3-43

Self-Refresh Mode ............................................................. 3-44

Forcing SDRAM Commands ............................................. 3-45

Force Precharge All ....................................................... 3-45

Force Load Mode Register ............................................. 3-46

Force Auto-Refresh ........................................................ 3-46

DDR2 DRAM Controller (ADSP-2146x) .................................... 3-46

Features ................................................................................. 3-46

Pin Descriptions .................................................................... 3-48

Functional Description .......................................................... 3-48

DDR2 Commands ............................................................ 3-51

Load Mode Register ...................................................... 3-51

Load Extended Mode Register ...................................... 3-52

Load Extended Mode Register 2 ................................... 3-53

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Contents

x ADSP-214xx SHARC Processor Hardware Reference

Load Extended Mode Register 3 ................................... 3-53

Bank Activation ............................................................ 3-53

Precharge ...................................................................... 3-54

Precharge All ................................................................ 3-54

Burst Read .................................................................... 3-54

Burst Write ................................................................... 3-55

Auto-Refresh ................................................................ 3-56

Self-Refresh Entry ......................................................... 3-57

Self-Refresh Exit ........................................................... 3-57

Precharge Power-Down Entry ....................................... 3-58

Precharge Power-down Exit ........................................... 3-59

No Operation/Command Inhibit .................................. 3-60

Address Mapping .............................................................. 3-60

Address Translation Options ......................................... 3-60

Page Interleaving Map .................................................. 3-60

Bank Interleaving Map .................................................. 3-61

Address Width Settings ................................................. 3-61

16-Bit Address Mapping ............................................... 3-62

Address Map Tables ...................................................... 3-63

Refresh Rate ..................................................................... 3-66

Data Mask ........................................................................ 3-68

Resetting the Controller .................................................... 3-68

Disabling the Controller ................................................... 3-69

Initialization Sequence .......................................................... 3-69

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