DATASHEET
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR
LOW POWER
Description
The 92HD71B7 codec is a low power optimized, high
fidelity, 4-channel audio codec compatible with Intel’s High
Definition (HD) Audio Interface. The 92HD71B7 codec
provides stereo 24-bit resolution with sample rates up to
192kHz. Dual SPDIF provides connectivity to consumer
electronic equipment that is WLP complaint. The
92HD71B7 provides high quality, HD Audio capability to
notebook and business desktop PC applications.
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92HD71B7
Support for 1.5V and 3.3V HDA signaling with
runtime selection
Digital microphone input (mono, stereo, or quad
array)
3 Adjustable VREF Out pins for microphone bias
High performance analog mixer option
6 analog ports
Supports to 3 stereo microphone inputs
Two-pin volume up/down control
Digital PC Beep to all outputs
Integrated headphone amp
Jack insertion detection
Sample rates up to 192kHz
+3.3 V, +4 V, +4.75 V and +5 V analog power supply
options
48-pin QFP and 48-pad QFN RoHS packages
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 for laptop sub-woofer
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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
2 independent S/PDIF Output converters for WLP
compliant HDMI/SPDIF support.
Preliminary Datasheet
Block Diagram
Port A
Port B
Port C
Port D
Port E
Port F
SPDIF Out 1
SPDIF Out 2
High Definition
Interface
DSP
DUAL SPDIF
IDT™ CONFIDENTIAL AND PROPRIETARY
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
1
Ports
X
92HD71B7
V 0.9 07/07
92HD71B7
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
Software Support
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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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IDT™ CONFIDENTIAL AND PROPRIETARY
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
2
92HD71B7
V 0.9 07/07
92HD71B7
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
TABLE OF CONTENTS
1. DESCRIPTION ........................................................................................................................ 10
1.1. Overview ..........................................................................................................................................10
1.2. Orderable Part numbers ..................................................................................................................11
1.3. Block Diagram .................................................................................................................................11
1.4. Detailed Description .........................................................................................................................12
1.4.1. Low-voltage High Definition Audio Link Signaling ..............................................................12
1.4.2. Port Functionality ...............................................................................................................12
1.4.3. Port Characteristics ............................................................................................................12
1.4.4. Jack Detect ........................................................................................................................13
1.4.5. SPDIF Output .....................................................................................................................13
1.4.6. Mono Output ......................................................................................................................14
1.4.7. Analog Mixer ......................................................................................................................15
1.4.8. Input Multiplexers ...............................................................................................................15
1.4.9. ADC Multiplexers ...............................................................................................................15
1.4.10. Power Management .........................................................................................................15
1.4.11. Multi-channel capture .......................................................................................................16
1.4.12. EAPD ...............................................................................................................................17
1.4.13. Digital Microphone Support ..............................................................................................18
1.4.14. Analog PC-Beep ..............................................................................................................23
1.4.15. Headphone Drivers ..........................................................................................................23
1.4.16. GPIO ................................................................................................................................23
1.4.17. External Volume Control ..................................................................................................24
2. CHARACTERISTICS ............................................................................................................... 26
2.1. Electrical Specifications ...................................................................................................................26
2.1.1. Absolute Maximum Ratings ...............................................................................................26
2.1.2. Recommended Operating Conditions ................................................................................26
2.2. 92HD71B7 5V, 4.75V, and 3.3V Analog Performance Characteristics
(PRELIMINARY) ................27
3. PORT CONFIGURATION ........................................................................................................ 32
4. FUNCTIONAL BLOCK DIAGRAM .......................................................................................... 33
5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 34
5.1. Widget List 92HD71B .....................................................................................................................35
6. PIN CONFIGURATION DEFAULT REGISTER SETTINGS .................................................... 36
7. WIDGET INFORMATION ........................................................................................................ 37
8. SUPPORTED VERBS AND COMMANDS .............................................................................. 38
8.1. Root Node (NID = 00) ......................................................................................................................38
8.1.1. Root VendorID ...................................................................................................................38
8.1.2. Root RevID ........................................................................................................................38
8.2. AFG Node (NID = 01 .......................................................................................................................39
8.2.1. AFG Reset .........................................................................................................................39
8.2.2. AFG NodeInfo ....................................................................................................................39
8.2.4. AFG AFGCap .....................................................................................................................40
8.2.3. AFG FGType ......................................................................................................................40
8.2.5. AFG PCMCap ....................................................................................................................41
8.2.6. AFG StreamCap ................................................................................................................42
8.2.7. AFG InAmpCap ..................................................................................................................43
8.2.8. AFG PwrStateCap .............................................................................................................43
8.2.10. AFG OutAmpCap .............................................................................................................44
8.2.9. AFG GPIOCnt ....................................................................................................................44
8.2.12. AFG UnsolResp ...............................................................................................................45
8.2.11. AFG PwrState ..................................................................................................................45
8.2.13. AFG GPIO ........................................................................................................................46
8.2.14. AFG GPIOEn ...................................................................................................................47
8.2.15. AFG GPIODir ...................................................................................................................48
IDT™ CONFIDENTIAL AND PROPRIETARY
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
3
92HD71B7
V 0.9 07/07
92HD71B7
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
8.2.16. AFG GPIOWakeEn ..........................................................................................................49
8.2.17. AFG GPIOUnsol ..............................................................................................................51
8.2.18. AFG GPIOSticky ..............................................................................................................53
8.2.19. AFG SubID .......................................................................................................................54
8.2.20. AFG GPIOPlrty ................................................................................................................54
8.2.21. AFG GPIODrive ...............................................................................................................55
8.2.22. AFG DMic ........................................................................................................................56
8.3. Port A Node (NID = 0A) ...................................................................................................................57
8.3.1. PortA WCap .......................................................................................................................57
8.3.2. PortA PinCap .....................................................................................................................58
8.3.3. PortA ConLst ......................................................................................................................59
8.3.4. PortA ConLstEntry0 ...........................................................................................................60
8.3.5. PortA ConSelectCtrl ...........................................................................................................60
8.3.6. PortA PinWCntrl .................................................................................................................61
8.3.7. PortA UnsolResp ...............................................................................................................61
8.3.8. PortA ChSense ..................................................................................................................62
8.3.9. PortA InAmpLeft .................................................................................................................62
8.3.10. PortA InAmpRight ............................................................................................................63
8.3.11. PortA ConfigDefault .........................................................................................................63
8.4. PortB Node (NID = 0B) ....................................................................................................................65
8.4.1. PortB WCap .......................................................................................................................65
8.4.2. PortB PinCap .....................................................................................................................66
8.4.3. PortB PinWCntrl .................................................................................................................67
8.4.4. PortB UnsolResp ...............................................................................................................67
8.4.5. PortB ChSense ..................................................................................................................68
8.4.6. PortB ConfigDefault ...........................................................................................................68
8.5. Port C Node (NID = 0C) ...................................................................................................................70
8.5.1. PortC WCap .......................................................................................................................70
8.5.2. PortC PinCap .....................................................................................................................71
8.5.3. PortC PinWCntrl .................................................................................................................72
8.5.4. PortC UnsolResp ...............................................................................................................72
8.5.5. PortC ChSense ..................................................................................................................73
8.5.6. PortC ConfigDefault ...........................................................................................................73
8.6. Port D Node (NID = 0D) ...................................................................................................................75
8.6.1. PortD WCap .......................................................................................................................75
8.6.2. PortD PinCap .....................................................................................................................76
8.6.3. PortD ConLst .....................................................................................................................77
8.6.4. PortD ConLstEntry0 ...........................................................................................................77
8.6.5. PortD ConSelectCtrl ...........................................................................................................78
8.6.6. PortD PinWCntrl .................................................................................................................78
8.6.7. PortD UnsolResp ...............................................................................................................79
8.6.8. PortD ChSense ..................................................................................................................79
8.6.9. PortD InAmpLeft ................................................................................................................80
8.6.10. PortD InAmpRight ............................................................................................................80
8.6.11. PortD ConfigDefault .........................................................................................................81
8.7. PortE Node (NID = 0E) ....................................................................................................................82
8.7.1. PortE WCap .......................................................................................................................82
8.7.2. PortE PinCap .....................................................................................................................83
8.7.3. PortE PinWCntrl .................................................................................................................84
8.7.4. PortE UnsolResp ...............................................................................................................85
8.7.5. PortE ChSense ..................................................................................................................86
8.7.6. PortE ConfigDefault ...........................................................................................................86
8.8. PortF Node (NID = 0F) .....................................................................................................................87
8.8.1. PortF WCap .......................................................................................................................87
8.8.2. PortF PinCap .....................................................................................................................89
IDT™ CONFIDENTIAL AND PROPRIETARY
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
4
92HD71B7
V 0.9 07/07
92HD71B7
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
8.8.3. PortF ConLst ......................................................................................................................90
8.8.4. PortF ConLstEntry0 ...........................................................................................................90
8.8.5. PortF ConSelectCtrl ...........................................................................................................91
8.8.6. PortF PinWCntrl .................................................................................................................91
8.8.7. PortF UnsolResp ................................................................................................................91
8.8.8. PortF ChSense ..................................................................................................................92
8.8.9. PortF InAmpLeft .................................................................................................................92
8.8.10. PortF InAmpRight ............................................................................................................93
8.8.11. PortF ConfigDefault .........................................................................................................93
8.9. DAC0 Node (NID = 10) ....................................................................................................................95
8.9.1. DAC0 WCap ......................................................................................................................95
8.9.2. DAC0 Cnvtr ........................................................................................................................96
8.9.3. DAC0 OutAmpLeft .............................................................................................................97
8.9.4. DAC0 OutAmpRight ...........................................................................................................97
8.9.5. DAC0 PwrState ..................................................................................................................98
8.9.6. DAC0 CnvtrID ....................................................................................................................98
8.9.7. DAC0 LR ............................................................................................................................99
8.10. DAC1 Node (NID = 11) ..................................................................................................................99
8.10.1. DAC1 WCap ....................................................................................................................99
8.10.2. DAC1 Cnvtr ....................................................................................................................101
8.10.3. DAC1 OutAmpLeft .........................................................................................................102
8.10.4. DAC1 OutAmpRight .......................................................................................................102
8.10.5. DAC1 PwrState ..............................................................................................................103
8.10.6. DAC1 CnvtrID ................................................................................................................103
8.10.7. DAC1 LR ........................................................................................................................104
8.11. ADC0 Node (NID = 12) ................................................................................................................104
8.11.1. ADC0 WCap ..................................................................................................................104
8.11.2. ADC0 ConLst .................................................................................................................105
8.11.3. ADC0 ConLstEntry0 .......................................................................................................106
8.11.4. ADC0 Cnvtr ....................................................................................................................106
8.11.5. ADC0 ProcState .............................................................................................................107
8.11.6. ADC0 PwrState ..............................................................................................................108
8.11.7. ADC0 CnvtrID ................................................................................................................108
8.12. ADC1 Node (NID = 13) ................................................................................................................109
8.12.1. ADC1 WCap ..................................................................................................................109
8.12.2. ADC1 ConLst .................................................................................................................110
8.12.3. ADC1 ConLstEntry0 .......................................................................................................111
8.12.4. ADC1 Cnvtr ....................................................................................................................111
8.12.5. ADC1 ProcState .............................................................................................................112
8.12.6. ADC1 PwrState ..............................................................................................................113
8.12.7. ADC1 CnvtrID ................................................................................................................113
8.13. MonoOut Node (NID = 14) ...........................................................................................................114
8.13.1. MonoOut WCap .............................................................................................................114
8.13.2. MonoOut PinCap ...........................................................................................................115
8.13.3. MonoOut ConLst ............................................................................................................116
8.13.4. MonoOut ConLstEntry0 .................................................................................................116
8.13.5. MonoOut PinWCntrl .......................................................................................................117
8.13.6. MonoOut InAmpLeft .......................................................................................................117
8.13.7. MonoOut ConfigDefault .................................................................................................118
8.14. MonoMux Node (NID = 15) ..........................................................................................................119
8.14.1. MonoMux WCap ............................................................................................................119
8.14.2. MonoMux ConLst ...........................................................................................................120
8.14.3. MonoMux ConLstEntry0 ................................................................................................121
8.14.4. MonoMux ConSelectCtrl ................................................................................................121
8.15. MonoMixer Node (NID = 16) ........................................................................................................122
IDT™ CONFIDENTIAL AND PROPRIETARY
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
5
92HD71B7
V 0.9 07/07
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