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WM8523 Datasheet(PDF) 3 Page - Wolfson Microelectronics plc |
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WM8523 Datasheet(HTML) 3 Page - Wolfson Microelectronics plc |
3 / 51 page Production Data WM8523 w PD, Rev 4.1, August 2011 3 TABLE OF CONTENTS DESCRIPTION ................................................................................................................... 1 FEATURES......................................................................................................................... 1 APPLICATIONS ................................................................................................................. 1 BLOCK DIAGRAM ............................................................................................................. 2 TABLE OF CONTENTS ..................................................................................................... 3 PIN CONFIGURATION....................................................................................................... 4 ORDERING INFORMATION .............................................................................................. 4 PIN DESCRIPTION – 20-LEAD TSSOP ............................................................................ 5 PIN DESCRIPTION – 24-LEAD QFN ................................................................................. 6 ABSOLUTE MAXIMUM RATINGS..................................................................................... 8 RECOMMENDED OPERATING CONDITIONS ................................................................. 8 ELECTRICAL CHARACTERISTICS .................................................................................. 9 TERMINOLOGY ..........................................................................................................................9 POWER CONSUMPTION MEASUREMENTS ..........................................................................10 SIGNAL TIMING REQUIREMENTS ................................................................................. 11 SYSTEM CLOCK TIMING .........................................................................................................11 AUDIO INTERFACE TIMING – MASTER MODE ......................................................................11 AUDIO INTERFACE TIMING – SLAVE MODE..........................................................................12 CONTROL INTERFACE TIMING – I 2C MODE ..........................................................................13 CONTROL INTERFACE TIMING – SPI MODE .........................................................................14 POWER ON RESET CIRCUIT ..................................................................................................15 DEVICE DESCRIPTION................................................................................................... 17 INTRODUCTION .......................................................................................................................17 SOFTWARE CONTROL INTERFACE.......................................................................................17 DIGITAL AUDIO INTERFACE ...................................................................................................21 DIGITAL AUDIO INTERFACE CONTROL.................................................................................24 DIGITAL AUDIO DATA SAMPLING RATES..............................................................................26 DAC FEATURES.......................................................................................................................27 HARDWARE CONTROL INTERFACE ......................................................................................32 POWER DOMAINS ...................................................................................................................34 REGISTER MAP............................................................................................................... 35 REGISTER BITS BY ADDRESS ...............................................................................................36 DIGITAL FILTER CHARACTERISTICS ........................................................................... 40 DAC FILTER RESPONSES.......................................................................................................41 DIGITAL DE-EMPHASIS CHARACTERISTICS.........................................................................42 APPLICATIONS INFORMATION ..................................................................................... 43 RECOMMENDED EXTERNAL COMPONENTS – 20-LEAD TSSOP.........................................43 RECOMMENDED PCB LAYOUT – 20-LEAD TSSOP ...............................................................44 RECOMMENDED EXTERNAL COMPONENTS – 24-LEAD QFN .............................................45 RECOMMENDED PCB LAYOUT – 24-LEAD QFN....................................................................46 RECOMMENDED ANALOGUE LOW PASS FILTER ................................................................47 RELEVANT APPLICATION NOTES..........................................................................................47 PACKAGE DIMENSIONS – 20-LEAD TSSOP ................................................................ 48 PACKAGE DIMENSIONS – 24-LEAD QFN ..................................................................... 49 IMPORTANT NOTICE ...................................................................................................... 50 ADDRESS .................................................................................................................................50 REVISION HISTORY........................................................................................................ 51 |
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