DATASHEET
FOUR CHANNEL HD AUDIO CODEC
LOW POWER OPTIMIZED
92HD75B
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Digital microphone inputs (mono or stereo*)
High performance analog mixer
2 or 3* adjustable VREF Out pins for microphone
bias
5 or 6* analog ports with port presence detect
Two-pin volume up/down control
Digital and Analog PC Beep to all outputs
Integrated headphone amp
Sample rates up to 192kHz
+3.3 V, +4.75 V and +5 V analog power supply
options
3.3V digital power supply options
32-pad and 48-pad QFN RoHS packages
*dependant on package option
Description
The 92HD75B is a low power optimized, high fidelity,
4-channel audio codec compatible with Intel’s High
Definition (HD) Audio Interface. The 92HD75B provides
stereo 24-bit resolution with sample rates up to 192kHz.
The 92HD75B provides high quality, HD Audio capability to
notebook and business desktop PC applications.
Features
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4 Channels (2 stereo DACs and 2 stereo ADCs)
with 24-bit resolution
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Supports full-duplex stereo audio and simultaneous
VoIP
Provides a mono output
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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
Support for 1.5V and 3.3V HDA signaling
Block Diagram
Port A
Port B
Port C
Port D
Port E
48 pad
Port F
package only
SPDIF Out 1
SPDIF Out 2
High Definition
Interface
DSP
DUAL SPDIF
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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
Ports
X
92HD75B
V 1.0 01-09
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
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
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 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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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
V 1.0 01-09
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
PC AUDIO
TABLE OF CONTENTS
1. DESCRIPTION .......................................................................................................................... 5
1.1. Overview ............................................................................................................................................5
1.2. Orderable Part numbers ....................................................................................................................5
1.3. Block Diagram ...................................................................................................................................6
1.4. Detailed Description ...........................................................................................................................7
1.4.1. Low-voltage High Definition Audio Link Signaling ................................................................7
1.4.2. Port Functionality .................................................................................................................7
1.4.3. Port Characteristics ..............................................................................................................7
1.4.4. Jack Detect ..........................................................................................................................8
1.4.5. SPDIF Output .......................................................................................................................8
1.4.6. Mono Output ......................................................................................................................10
1.4.7. Input Multiplexers ...............................................................................................................10
1.4.8. ADC Multiplexers ...............................................................................................................10
1.4.9. Power Management ...........................................................................................................10
1.4.10. Multi-channel capture .......................................................................................................11
1.4.11. EAPD ...............................................................................................................................12
1.4.12. Digital Microphone Support ..............................................................................................13
1.4.13. Analog PC-Beep ..............................................................................................................18
1.4.14. Headphone Drivers ..........................................................................................................18
1.4.15. GPIO ................................................................................................................................18
1.4.16. External Volume Control (48 pad package only) .............................................................19
2. CHARACTERISTICS ............................................................................................................... 21
2.1. Electrical Specifications ...................................................................................................................21
2.1.1. Absolute Maximum Ratings ...............................................................................................21
2.1.2. Recommended Operating Conditions ................................................................................21
2.2. 92HD75B 5V, 4.75V, and 3.3V Analog Performance Characteristics
....................................... 22
3. PORT CONFIGURATIONS ..................................................................................................... 28
4. FUNCTIONAL BLOCK DIAGRAMS ....................................................................................... 29
4.1. 32 pad package, 5 port ....................................................................................................................29
4.2. 48 pad package, 6 port ....................................................................................................................30
5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 31
5.1. 5-port 32 pad Widget Diagram .........................................................................................................31
5.2. 6-port 48 pad Widget Diagram .........................................................................................................32
5.3. Widget List 92HD75B .....................................................................................................................33
6. PIN CONFIGURATION DEFAULT REGISTER SETTINGS .................................................... 34
7. WIDGET INFORMATION ........................................................................................................ 35
8. SUPPORTED VERBS AND COMMANDS .............................................................................. 36
8.1. Root Node (NID = 00) ......................................................................................................................36
8.1.1. Root VendorID ...................................................................................................................36
8.1.2. Root RevID ........................................................................................................................36
8.2. AFG Node (NID = 01 .......................................................................................................................37
8.2.1. AFG Reset .........................................................................................................................37
8.2.2. AFG NodeInfo ....................................................................................................................37
8.2.4. AFG AFGCap .....................................................................................................................38
8.2.3. AFG FGType ......................................................................................................................38
8.2.5. AFG PCMCap ....................................................................................................................39
8.2.6. AFG StreamCap ................................................................................................................40
8.2.7. AFG InAmpCap ..................................................................................................................41
8.2.8. AFG PwrStateCap .............................................................................................................41
8.2.10. AFG OutAmpCap .............................................................................................................42
8.2.9. AFG GPIOCnt ....................................................................................................................42
8.2.12. AFG UnsolResp ...............................................................................................................43
8.2.11. AFG PwrState ..................................................................................................................43
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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
V 1.0 01-09
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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
PC AUDIO
8.2.13. AFG GPIO ........................................................................................................................44
8.2.14. AFG GPIOEn ...................................................................................................................45
8.2.15. AFG GPIODir ...................................................................................................................46
8.2.16. AFG GPIOWakeEn ..........................................................................................................47
8.2.17. AFG GPIOUnsol ..............................................................................................................49
8.2.18. AFG GPIOSticky ..............................................................................................................51
8.2.19. AFG SubID .......................................................................................................................52
8.2.20. AFG GPIOPlrty ................................................................................................................52
8.2.21. AFG GPIODrive ...............................................................................................................53
8.2.22. AFG DMic ........................................................................................................................54
8.2.23. AFG Misc. (B3 revision and beyond only) ........................................................................55
8.3. Port A Node (NID = 0A) ...................................................................................................................56
8.3.1. PortA WCap .......................................................................................................................56
8.3.2. PortA PinCap .....................................................................................................................57
8.3.3. PortA ConLst ......................................................................................................................58
8.3.4. PortA ConLstEntry0 ...........................................................................................................59
8.3.5. PortA ConSelectCtrl ...........................................................................................................59
8.3.6. PortA PinWCntrl .................................................................................................................59
8.3.7. PortA UnsolResp ...............................................................................................................60
8.3.8. PortA ChSense ..................................................................................................................60
8.3.9. PortA InAmpLeft .................................................................................................................61
8.3.10. PortA InAmpRight ............................................................................................................61
8.3.11. PortA ConfigDefault .........................................................................................................62
8.4. PortB Node (NID = 0B) ....................................................................................................................63
8.4.1. PortB WCap .......................................................................................................................63
8.4.2. PortB PinCap .....................................................................................................................64
8.4.3. PortB PinWCntrl .................................................................................................................65
8.4.4. PortB UnsolResp ...............................................................................................................66
8.4.5. PortB ChSense ..................................................................................................................67
8.4.6. PortB ConfigDefault ...........................................................................................................67
8.5. Port C Node (NID = 0C) ...................................................................................................................68
8.5.1. PortC WCap .......................................................................................................................68
8.5.2. PortC PinCap .....................................................................................................................70
8.5.3. PortC PinWCntrl .................................................................................................................71
8.5.4. PortC UnsolResp ...............................................................................................................71
8.5.5. PortC ChSense ..................................................................................................................72
8.5.6. PortC ConfigDefault ...........................................................................................................72
8.6. Port D Node (NID = 0D) ...................................................................................................................74
8.6.1. PortD WCap .......................................................................................................................74
8.6.2. PortD PinCap .....................................................................................................................75
8.6.3. PortD ConLst .....................................................................................................................76
8.6.4. PortD ConLstEntry0 ...........................................................................................................76
8.6.5. PortD ConSelectCtrl ...........................................................................................................77
8.6.6. PortD PinWCntrl .................................................................................................................77
8.6.7. PortD UnsolResp ...............................................................................................................78
8.6.8. PortD ChSense ..................................................................................................................78
8.6.9. PortD InAmpLeft ................................................................................................................79
8.6.10. PortD InAmpRight ............................................................................................................79
8.6.11. PortD ConfigDefault .........................................................................................................80
8.7. PortE Node (NID = 0E) ....................................................................................................................81
8.7.1. PortE WCap .......................................................................................................................81
8.7.2. PortE PinCap .....................................................................................................................82
8.7.3. PortE PinWCntrl .................................................................................................................83
8.7.4. PortE UnsolResp ...............................................................................................................84
8.7.5. PortE ChSense ..................................................................................................................85
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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
V 1.0 01-09
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
PC AUDIO
8.7.6. PortE ConfigDefault ...........................................................................................................85
8.8. PortF Node (NID = 0F) .....................................................................................................................86
8.8.1. PortF WCap .......................................................................................................................86
8.8.2. PortF PinCap .....................................................................................................................88
8.8.3. PortF ConLst ......................................................................................................................89
8.8.4. PortF ConLstEntry0 ...........................................................................................................89
8.8.5. PortF ConSelectCtrl ...........................................................................................................90
8.8.6. PortF PinWCntrl .................................................................................................................90
8.8.7. PortF UnsolResp ................................................................................................................90
8.8.8. PortF ChSense ..................................................................................................................91
8.8.9. PortF InAmpLeft .................................................................................................................91
8.8.10. PortF InAmpRight ............................................................................................................92
8.8.11. PortF ConfigDefault .........................................................................................................92
8.9. DAC0 Node (NID = 10) ....................................................................................................................94
8.9.1. DAC0 WCap ......................................................................................................................94
8.9.2. DAC0 Cnvtr ........................................................................................................................95
8.9.3. DAC0 OutAmpLeft .............................................................................................................96
8.9.4. DAC0 OutAmpRight ...........................................................................................................96
8.9.5. DAC0 PwrState ..................................................................................................................97
8.9.6. DAC0 CnvtrID ....................................................................................................................97
8.9.7. DAC0 LR ............................................................................................................................98
8.10. DAC1 Node (NID = 11) ..................................................................................................................98
8.10.1. DAC1 WCap ....................................................................................................................98
8.10.2. DAC1 Cnvtr ....................................................................................................................100
8.10.3. DAC1 OutAmpLeft .........................................................................................................101
8.10.4. DAC1 OutAmpRight .......................................................................................................101
8.10.5. DAC1 PwrState ..............................................................................................................102
8.10.6. DAC1 CnvtrID ................................................................................................................102
8.10.7. DAC1 LR ........................................................................................................................103
8.11. ADC0 Node (NID = 12) ................................................................................................................103
8.11.1. ADC0 WCap ..................................................................................................................103
8.11.2. ADC0 ConLst .................................................................................................................104
8.11.3. ADC0 ConLstEntry0 .......................................................................................................105
8.11.4. ADC0 Cnvtr ....................................................................................................................105
8.11.5. ADC0 ProcState .............................................................................................................106
8.11.6. ADC0 PwrState ..............................................................................................................107
8.11.7. ADC0 CnvtrID ................................................................................................................107
8.12. ADC1 Node (NID = 13) ................................................................................................................108
8.12.1. ADC1 WCap ..................................................................................................................108
8.12.2. ADC1 ConLst .................................................................................................................109
8.12.3. ADC1 ConLstEntry0 .......................................................................................................110
8.12.4. ADC1 Cnvtr ....................................................................................................................110
8.12.5. ADC1 ProcState .............................................................................................................111
8.12.6. ADC1 PwrState ..............................................................................................................112
8.12.7. ADC1 CnvtrID ................................................................................................................112
8.13. PCBeep/MonoOut Node (NID = 14) ............................................................................................113
8.13.1. PCBeep/MonoOut WCap ...............................................................................................113
8.13.2. PCBeep/MonoOut PinCap .............................................................................................114
8.13.3. PCBeep/MonoOut ConLst .............................................................................................115
8.13.4. PCBeep/MonoOut ConLstEntry0 ...................................................................................115
8.13.5. PCBeep/MonoOut PinWCntrl .........................................................................................116
8.13.6. PCBeep/MonoOut InAmpLeft ........................................................................................116
8.13.7. PCBeep/MonoOut ConfigDefault ...................................................................................117
8.14. MonoMux Node (NID = 15) ..........................................................................................................118
8.14.1. MonoMux WCap ............................................................................................................118
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4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
V 1.0 01-09
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