DATASHEET
SIX CHANNEL HD AUDIO CODEC
PREMIUM WLP 3/4 COMPLIANT
92HDW74C1
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2 independent S/PDIF Output converters for WLP
compliant HDMI/SPDIF support.
Support for 1.5V and 3.3V HDA signaling with
runtime selection
Digital microphone input (mono, stereo, or quad
array)
4 adjustable VREF Out pins for microphone bias
High performance analog mixer
9 stereo analog ports with presence detect
capability
Two-pin volume up/down control
Digital and Analog PC Beep to all outputs
Integrated headphone amps (3)
Sample rates up to 192kHz
+3.3 V, +4 V, +4.75 V and +5 V analog power supply
options
48-pin QFP RoHS package
Description
The 92HDW74C1 codec is a low power optimized, high
fidelity, 6-channel audio codec compatible with Intel’s High
Definition (HD) Audio Interface. The 92HDW74C1 codec
provides stereo 24-bit resolution with sample rates up to
192kHz. Dual SPDIF provides connectivity to consumer
electronic equipment that is WLP compliant. The
92HDW74C1 provides high quality, HD Audio capability to
multimedia notebook and desktop PC applications.
Features
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6 Channels (3 stereo DACs and 2 stereo ADCs) with
24-bit resolution
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Supports 5.1 audio
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Microsoft WLP 3/4 premium logo compliant, as
defined in WLP 3.09
Optimized and flexible power management with
pop/click mitigation
Block Diagram
Port A
Port B
Port C
Port D
Port E
Port F
Port G
Port H
Port I
SPDIF Out 1
SPDIF Out 2
SPDIF In
High Definition Interface
DSP
SPDIF
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SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
Ports
92HDW74C1
V 1.0 03/08
92HDW74C1
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
PC AUDIO
Software Support
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Intuitive graphical user interface that allows configurability and preference settings
SKPI (Kernel Processing Interface)
• Enables plug-ins that can operate globally on all audio streams of the system
12 band fully parametric equalizer (SKPI plug-in)
• Constant, system-level effects tuned to optimize a particular platform can be combined with
user-mode “presets” tailored for specific acoustical environments and applications
• System-level effects automatically disabled when external audio connections made
Dynamics Processing (SKPI plug-in)
• Enables improved voice articulation
• Compressor/limiter allows higher average noise level without resonances or damage to
speakers.
IDT Vista APO wrapper
• Enables multiple APOs to be used with the IDT Driver
Microphone Beam Forming, Acoustic Echo Cancellation, and Noise Suppression
Dynamic Stream Switching
• Improved multi-streaming user experience with less support calls
Dolby PC Entertainment Experience Logo Program
• Dolby Master Studio ™ (MS)
• Dolby Home Theater™ (HT)
• Dolby Sound Room™ (SR)
Dolby Technologies
• Dolby Headphone™, Dolby Virtual Speaker™
• Dolby ProLogic II™, Dolby ProLogic IIx™
• Dolby Digital Live™ (DDL)
Maxx Player™ from Waves
WOW
TM
and Tru Surround
TM
from SRS
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SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HDW74C1
V 1.0 03/08
92HDW74C1
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. 92HDW74C1 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
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SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HDW74C1
V 1.0 03/08
92HDW74C1
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
PC AUDIO
6.2.17. AFG GPIOUnsol ..............................................................................................................58
6.2.18. AFG GPIOSticky ..............................................................................................................59
6.2.19. AFG SubID .......................................................................................................................60
6.2.20. AFG GPIOPlrty ................................................................................................................61
6.2.21. AFG GPIODrive ...............................................................................................................62
6.2.22. AFG DMic ........................................................................................................................63
6.2.23. AFG AnaBeep ..................................................................................................................64
6.3. Port A Node (NID = 0A) ...................................................................................................................64
6.3.1. PortA WCap .......................................................................................................................64
6.3.2. PortA PinCap .....................................................................................................................65
6.3.3. PortA ConLst ......................................................................................................................66
6.3.4. PortA ConLstEntry0 ...........................................................................................................67
6.3.5. PortA ConSelectCtrl ...........................................................................................................67
6.3.6. PortA PinWCntrl .................................................................................................................68
6.3.7. PortA UnsolResp ...............................................................................................................68
6.3.8. PortA ChSense ..................................................................................................................69
6.3.9. PortA InAmpLeft .................................................................................................................70
6.3.10. PortA InAmpRight ............................................................................................................70
6.3.11. PortA ConfigDefault .........................................................................................................70
6.4. PortB Node (NID = 0B) ....................................................................................................................72
6.4.1. PortB WCap .......................................................................................................................72
6.4.2. PortB PinCap .....................................................................................................................73
6.4.3. PortB ConLstEntry0 ...........................................................................................................74
6.4.4. PortB ConLstEntry0 ...........................................................................................................74
6.4.5. PortB ConSelectCtrl ...........................................................................................................75
6.4.6. PortB PinWCntrl .................................................................................................................75
6.4.7. PortB UnsolResp ...............................................................................................................76
6.4.8. PortB ChSense ..................................................................................................................77
6.4.9. PortB InAmpLeft .................................................................................................................77
6.4.10. PortD InAmpRight ............................................................................................................78
6.4.11. PortB ConfigDefault .........................................................................................................78
6.5. Port C Node (NID = 0C) ...................................................................................................................79
6.5.1. PortC WCap .......................................................................................................................79
6.5.2. PortC PinCap .....................................................................................................................81
6.5.3. PortC ConLst .....................................................................................................................82
6.5.4. PortC ConLstEntry0 ...........................................................................................................82
6.5.5. PortC ConSelectCtrl ...........................................................................................................83
6.5.6. PortC PinWCntrl .................................................................................................................83
6.5.7. PortC UnsolResp ...............................................................................................................84
6.5.8. PortC ChSense ..................................................................................................................84
6.5.9. PortC InAmpLeft ................................................................................................................85
6.5.10. PortC InAmpRight ............................................................................................................85
6.5.11. PortC ConfigDefault .........................................................................................................86
6.6. Port D Node (NID = 0D) ...................................................................................................................87
6.6.1. PortD WCap .......................................................................................................................87
6.6.2. PortD PinCap .....................................................................................................................89
6.6.3. PortD ConLst .....................................................................................................................90
6.6.4. PortD ConLstEntry0 ...........................................................................................................90
6.6.5. PortD ConSelectCtrl ...........................................................................................................91
6.6.6. PortD PinWCntrl .................................................................................................................91
6.6.7. PortD UnsolResp ...............................................................................................................92
6.6.8. PortD ChSense ..................................................................................................................92
6.6.9. PortD InAmpLeft ................................................................................................................93
6.6.10. PortD InAmpRight ............................................................................................................93
6.6.11. PortD ConfigDefault .........................................................................................................94
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SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HDW74C1
V 1.0 03/08
92HDW74C1
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
PC AUDIO
6.7. PortE Node (NID = 0E) ....................................................................................................................95
6.7.1. PortE WCap .......................................................................................................................95
6.7.2. PortE PinCap .....................................................................................................................96
6.7.3. PortE ConLst ......................................................................................................................97
6.7.4. PortE ConLstEntry0 ...........................................................................................................98
6.7.5. PortE ConSelectCtrl ...........................................................................................................98
6.7.6. PortE PinWCntrl .................................................................................................................99
6.7.7. PortE UnsolResp ...............................................................................................................99
6.7.8. PortE ChSense ................................................................................................................100
6.7.9. PortE InAmpLeft ...............................................................................................................101
6.7.10. PortE InAmpRight ..........................................................................................................101
6.7.11. PortE ConfigDefault .......................................................................................................101
6.8. PortF Node (NID = 0F) ...................................................................................................................103
6.8.1. PortF WCap .....................................................................................................................103
6.8.2. PortF PinCap ...................................................................................................................104
6.8.3. PortF ConLst ....................................................................................................................105
6.8.4. PortF ConLstEntry0 .........................................................................................................105
6.8.5. PortF ConSelectCtrl .........................................................................................................106
6.8.6. PortF PinWCntrl ...............................................................................................................106
6.8.7. PortF UnsolResp ..............................................................................................................107
6.8.8. PortF ChSense ................................................................................................................107
6.8.9. PortF InAmpLeft ...............................................................................................................108
6.8.10. PortF InAmpRight ..........................................................................................................108
6.9. PortG Node (NID = 10) ..................................................................................................................109
6.9.1. PortG WCap .....................................................................................................................109
6.9.2. PortG PinCap ...................................................................................................................110
6.9.3. PortG ConLst ...................................................................................................................111
6.9.4. PortG ConLstEntry0 .........................................................................................................112
6.9.5. PortG ConSelectCtrl ........................................................................................................112
6.9.6. PortG PinWCntrl ..............................................................................................................113
6.9.7. PortG UnsolResp .............................................................................................................113
6.9.8. PortG ChSense ................................................................................................................114
6.9.9. PortG InAmpLeft ..............................................................................................................114
6.9.10. PortG InAmpRight ..........................................................................................................115
6.9.11. PortG ConfigDefault .......................................................................................................116
6.10. PortH Node (NID = 11) ................................................................................................................117
6.10.1. PortH WCap ...................................................................................................................117
6.10.2. PortH PinCap .................................................................................................................118
6.10.3. PortH ConLst .................................................................................................................119
6.10.4. PortH ConLstEntry0 .......................................................................................................120
6.10.5. PortH ConSelectCtrl .......................................................................................................120
6.10.6. PortH PinWCntrl .............................................................................................................121
6.10.7. PortH UnsolResp ...........................................................................................................121
6.10.8. PortH ChSense ..............................................................................................................122
6.10.9. PortH InAmpLeft ............................................................................................................122
6.10.10. PortH InAmpRight ........................................................................................................123
6.10.11. PortH ConfigDefault .....................................................................................................124
6.11. PortI Node (NID = 12) ..................................................................................................................125
6.11.1. PortI WCap ....................................................................................................................125
6.11.2. PortI PinCap ...................................................................................................................126
6.11.3. PortI PinWCntrl ..............................................................................................................127
6.11.4. PortI UnsolResp .............................................................................................................127
6.11.5. PortI ChSense ................................................................................................................128
6.11.6. PortI ConfigDefault .........................................................................................................128
6.12. DMic0 Node (NID = 13) ...............................................................................................................130
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SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HDW74C1
V 1.0 03/08
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