WM8721L(2004) 查看數據表（PDF） - Wolfson Microelectronics plc

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WM8721L
(Rev.:2004)

Internet Audio DAC with Integrated Headphone Driver

Wolfson Microelectronics plc 

WM8721 / WM8721L

TABLE OF CONTENTS

Production Data

DESCRIPTION ................................................................................................................1

FEATURES......................................................................................................................1

APPLICATIONS ..............................................................................................................1

BLOCK DIAGRAM ..........................................................................................................1

TABLE OF CONTENTS ..................................................................................................2

PIN CONFIGURATION....................................................................................................3

ORDERING INFORMATION ...........................................................................................3

PIN DESCRIPTION .........................................................................................................4

ABSOLUTE MAXIMUM RATINGS..................................................................................5

RECOMMENDED OPERATING CONDITIONS ..............................................................5

ELECTRICAL CHARACTERISTICS ...............................................................................6

TERMINOLOGY ..............................................................................................................7

POWER CONSUMPTION ...............................................................................................7

MASTER CLOCK TIMING...............................................................................................8

DIGITAL AUDIO INTERFACE – MASTER MODE ...................................................................8

DIGITAL AUDIO INTERFACE – SLAVE MODE ......................................................................9

MPU INTERFACE TIMING ......................................................................................................9

DEVICE DESCRIPTION................................................................................................11

INTRODUCTION ...................................................................................................................11

AUDIO SIGNAL PATH...........................................................................................................11

DEVICE OPERATION ...........................................................................................................16

AUDIO DATA SAMPLING RATES.........................................................................................21

ACTIVATING DSP AND DIGITAL AUDIO INTERFACE ........................................................25

SOFTWARE CONTROL INTERFACE...................................................................................25

POWER DOWN MODES ......................................................................................................27

REGISTER MAP ...................................................................................................................28

DAC FILTER RESPONSES ..........................................................................................32

DIGITAL DE-EMPHASIS CHARACTERISTICS.....................................................................33

RECOMMENDED EXTERNAL COMPONENTS ...........................................................35

PACKAGE DIMENSIONS .............................................................................................36

IMPORTANT NOTICE ...................................................................................................37

ADDRESS: ............................................................................................................................37

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PD Rev 4.0 November 2004

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