92HD73C
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
PC AUDIO
TABLE OF CONTENTS
1. DESCRIPTION ........................................................................................................................ 11
1.1. Overview ..........................................................................................................................................11
1.2. Orderable Part Numbers ..................................................................................................................11
1.3. Block Diagram .................................................................................................................................12
1.4. Detailed Description .........................................................................................................................13
1.4.1. Port Functionality ...............................................................................................................13
1.4.2. Port Characteristics ............................................................................................................13
1.4.3. Jack Detect ........................................................................................................................14
1.4.4. SPDIF Output .....................................................................................................................14
1.4.5. SPDIF Input .......................................................................................................................16
1.4.6. Analog Mixer ......................................................................................................................16
1.4.7. Input Multiplexers ...............................................................................................................17
1.4.8. ADC Multiplexers ...............................................................................................................17
1.4.9. Power Management ...........................................................................................................17
1.4.10. Low-voltage HDA Signaling .............................................................................................19
1.4.11. Multi-channel capture .......................................................................................................19
1.4.12. EAPD ...............................................................................................................................21
1.4.13. Digital Microphone Support ..............................................................................................23
1.4.14. PC-Beep ..........................................................................................................................28
1.4.15. Headphone Drivers ..........................................................................................................28
1.4.16. GPIO ................................................................................................................................29
1.4.17. External Volume Control ..................................................................................................30
2. CHARACTERISTICS ............................................................................................................... 32
2.1. Electrical Specifications ...................................................................................................................32
2.1.1. Absolute Maximum Ratings ...............................................................................................32
2.1.2. Recommended Operating Conditions ................................................................................32
2.2. 92HD73C 5V, 4.75V, and 3.3V Analog Performance Characteristics ..............................................33
3. PORT CONFIGURATIONS ..................................................................................................... 39
4. FUNCTIONAL BLOCK DIAGRAMS ....................................................................................... 40
5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 41
5.1. Widget List ......................................................................................................................................42
5.2. Pin Configuration Default Register Settings .....................................................................................43
6. WIDGET INFORMATION ........................................................................................................ 44
6.1. Root Node (NID = 00) ......................................................................................................................44
6.1.1. Root VendorID ...................................................................................................................44
6.1.2. Root RevID ........................................................................................................................45
6.2. AFG Node (NID = 01 .......................................................................................................................46
6.2.1. AFG Reset .........................................................................................................................46
6.2.2. AFG NodeInfo ....................................................................................................................46
6.2.3. AFG FGType ......................................................................................................................46
6.2.4. AFG AFGCap .....................................................................................................................47
6.2.5. AFG PCMCap ....................................................................................................................48
6.2.6. AFG StreamCap ................................................................................................................49
6.2.7. AFG InAmpCap ..................................................................................................................49
6.2.8. AFG PwrStateCap .............................................................................................................50
6.2.9. AFG GPIOCnt ....................................................................................................................50
6.2.10. AFG OutAmpCap .............................................................................................................51
6.2.12. AFG UnsolResp ...............................................................................................................52
6.2.11. AFG PwrState ..................................................................................................................52
6.2.13. AFG GPIO ........................................................................................................................53
6.2.14. AFG GPIOEn ...................................................................................................................54
6.2.15. AFG GPIODir ...................................................................................................................55
6.2.16. AFG GPIOWakeEn ..........................................................................................................56
3
92HD73C
V 1.3 08/11
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
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