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WM8850 Datasheet(PDF) 3 Page - Wolfson Microelectronics plc |
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WM8850 Datasheet(HTML) 3 Page - Wolfson Microelectronics plc |
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3 / 223 page  Pre-Production WM8850 w PP, April 2011, Rev 3.2 3 TABLE OF CONTENTS DESCRIPTION....................................................................................................... 1 FEATURES............................................................................................................ 1 APPLICATIONS..................................................................................................... 1 BLOCK DIAGRAM ................................................................................................ 2 TABLE OF CONTENTS......................................................................................... 3 PIN CONFIGURATION .......................................................................................... 9 ORDERING INFORMATION.................................................................................. 9 PIN DESCRIPTION.............................................................................................. 10 ABSOLUTE MAXIMUM RATINGS ...................................................................... 11 RECOMMENDED OPERATING CONDITIONS................................................... 11 THERMAL PERFORMANCE............................................................................... 12 ELECTRICAL CHARACTERISTICS ................................................................... 13 TERMINOLOGY............................................................................................................. 25 SIGNAL TIMING REQUIREMENTS .................................................................... 26 INTERNAL POWER ON RESET CIRCUIT.......................................................... 27 INTRODUCTION.................................................................................................. 28 WOLFSON INTERPRETATION OF HDA SPECIFICATION.......................................... 28 DOLBY AC3 (IEC-61937) ................................................................................................................................................ 28 FLOAT32 ......................................................................................................................................................................... 28 AUDIO WIDGETS CAPABILITIES PARAMETER: DIGITAL ........................................................................................... 29 LATENCY ........................................................................................................................................................................ 29 POWER STATES ............................................................................................................................................................ 29 STREAM START/STOP .................................................................................................................................................. 30 SDI STREAM ORDER..................................................................................................................................................... 30 BANDWIDTH CONFLICTS.............................................................................................................................................. 31 SOFTWARE FORMATTED (RAW) S/PDIF..................................................................................................................... 31 SOURCE SYNCHRONOUS INPUT - S/PDIF RX............................................................................................................ 31 S/PDIF TX VALIDITY FLAG ............................................................................................................................................ 32 CHANNEL NUMBERING................................................................................................................................................. 32 ILLEGAL REGISTER VALUES........................................................................................................................................ 33 RESPONSE FIELD.......................................................................................................................................................... 33 CHIP HIERARCHY......................................................................................................... 34 WIDGET DIAGRAM......................................................................................................................................................... 34 NODE LIST...................................................................................................................................................................... 35 NODE/VERB SUMMARY ................................................................................................................................................ 36 DEVICE DESCRIPTION ...................................................................................... 38 STEREO ANALOGUE LINE RECORD .......................................................................... 39 PORT-E (NID = 0CH) ...................................................................................................................................................... 39 PGA1 (NID = 0AH)........................................................................................................................................................... 40 ADC1 (NID = 02H) ........................................................................................................................................................... 41 STEREO ANALOGUE MICROPHONE RECORD.......................................................... 43 PORT-B (NID = 0DH) ...................................................................................................................................................... 43 PGA2 (NID = 0BH)........................................................................................................................................................... 45 MIC1 MUX (NID = 09H) ................................................................................................................................................... 46 MIC1 (NID = 03H) ............................................................................................................................................................ 46 DIGITAL MICROPHONE RECORD ............................................................................... 48 PORT-D (NID = 0EH) ...................................................................................................................................................... 49 PORT-H (NID = 16H)....................................................................................................................................................... 49 MIC2 (NID = 15H) ............................................................................................................................................................ 50 DIGITAL MICROPHONE INTERFACE CLOCK RATES ................................................................................................. 50 |
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