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WM8281 Datasheet(PDF) 3 Page - Cirrus Logic |
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WM8281 Datasheet(HTML) 3 Page - Cirrus Logic |
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3 / 392 page  WM8281 Rev 4.0 3 TABLE OF CONTENTS DESCRIPTION................................................................................................................ 1 FEATURES ..................................................................................................................... 1 APPLICATIONS ............................................................................................................. 1 BLOCK DIAGRAM ......................................................................................................... 2 TABLE OF CONTENTS.................................................................................................. 3 PIN CONFIGURATION ................................................................................................... 7 ORDERING INFORMATION........................................................................................... 8 PIN DESCRIPTION......................................................................................................... 8 ABSOLUTE MAXIMUM RATINGS ............................................................................... 14 RECOMMENDED OPERATING CONDITIONS............................................................ 15 ELECTRICAL CHARACTERISTICS ............................................................................ 16 TERMINOLOGY .......................................................................................................................27 THERMAL CHARACTERISTICS.................................................................................. 28 TYPICAL PERFORMANCE .......................................................................................... 29 TYPICAL POWER CONSUMPTION ........................................................................................29 TYPICAL SIGNAL LATENCY...................................................................................................30 SIGNAL TIMING REQUIREMENTS ............................................................................. 31 SYSTEM CLOCK & FREQUENCY LOCKED LOOP (FLL) ......................................................31 AUDIO INTERFACE TIMING ...................................................................................................33 DIGITAL MICROPHONE (DMIC) INTERFACE TIMING ...............................................................................................................33 DIGITAL SPEAKER (PDM) INTERFACE TIMING ........................................................................................................................34 DIGITAL AUDIO INTERFACE - MASTER MODE .........................................................................................................................35 DIGITAL AUDIO INTERFACE - SLAVE MODE ............................................................................................................................36 DIGITAL AUDIO INTERFACE - TDM MODE ................................................................................................................................37 CONTROL INTERFACE TIMING .............................................................................................38 2-WIRE (I2C) CONTROL MODE ...................................................................................................................................................38 4-WIRE (SPI) CONTROL MODE...................................................................................................................................................39 SLIMBUS INTERFACE TIMING...............................................................................................40 JTAG INTERFACE TIMING .....................................................................................................42 DEVICE DESCRIPTION ............................................................................................... 43 INTRODUCTION ......................................................................................................................43 HI-FI AUDIO CODEC.....................................................................................................................................................................43 DIGITAL AUDIO CORE .................................................................................................................................................................44 DIGITAL INTERFACES .................................................................................................................................................................44 OTHER FEATURES ......................................................................................................................................................................45 INPUT SIGNAL PATH ..............................................................................................................46 ANALOGUE MICROPHONE INPUT .............................................................................................................................................47 ANALOGUE LINE INPUT ..............................................................................................................................................................48 DIGITAL MICROPHONE INPUT ...................................................................................................................................................48 INPUT SIGNAL PATH ENABLE ....................................................................................................................................................50 INPUT SIGNAL PATH SAMPLE RATE CONTROL ......................................................................................................................51 INPUT SIGNAL PATH CONFIGURATION ....................................................................................................................................51 INPUT SIGNAL PATH DIGITAL VOLUME CONTROL .................................................................................................................56 INPUT SIGNAL PATH ANC CONTROL ........................................................................................................................................61 DIGITAL MICROPHONE INTERFACE PULL-DOWN ...................................................................................................................61 DIGITAL CORE ........................................................................................................................62 DIGITAL CORE MIXERS...............................................................................................................................................................64 DIGITAL CORE INPUTS ...............................................................................................................................................................67 DIGITAL CORE OUTPUT MIXERS ...............................................................................................................................................68 MIC MUTE MIXER.........................................................................................................................................................................71 |
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