WM8850 查看數據表（PDF） - Wolfson Microelectronics plc

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WM8850

Multi-Channel High Definition Audio CODEC

Wolfson Microelectronics plc 

Pre-Production

TABLE OF CONTENTS

WM8850

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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PP, April 2011, Rev 3.2

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