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SINGLE CHIP PC AUDIO SYSTEM
CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Description
The 92HD81 single-chip audio system is a low power
optimized, high fidelity, 4-channel audio codec with
integrated speaker amplifier, capless headphone amplifier,
and low drop out voltage regulator.
The high integration of the 92HD81 enables the smallest
PCB footprint with the lowest system BOM count and cost.
The integrated high-pass filter allows for speaker
protection.
The 92HD81 provides high quality HD Audio capability to
notebook and business desktop PC applications.
DATASHEET
92HD81
Features
• 4 Channels (2 stereo DACs and 2 stereo ADCs) with
24-bit resolution
• Supports full-duplex stereo audio and simultaneous VoIP
• Provides a mono output
• 2W/channel stereo speaker amplifier @ 4 ohms and
4.75V
• Two headphone amplifiers
• One capless and one non-capless retaskable
• Internal core voltage regulator
• 1.5V to 1.8V or 3.3V digital power supply options
• +5 V analog power supply option
• Dedicated BTL high pass filter for speaker
protection (RA revision only)
• Full HDA015-B low power support
• Audio inactivity transitions codec from D0 to D3 low
power mode
• Resume from D3 to D0 with audio activity in < 10 msec
• D3 to D0 transition with < -65dB pop/click
• Port presence detect in D3 with or without bit clock
• Optional analog PC beep in D3
• Additional vendor specific modes for even lower power
• Microsoft WLP 3/4/5 premium logo compliant, as
defined in WLP 3.9
• Dual SPDIF for WLP compliant support of
simultaneous HDMI and SPDIF output
• Support for 1.5V and 3.3V HDA signaling
• Two digital microphone inputs (mono, stereo, or
quad microphones)
• High performance analog mixer
• 2 adjustable VREF Out pins for analog microphone
bias
• 6 analog ports with port presence detect (5 single
ended, 1 BTL)
• Analog and digital PC Beep support
• Aux Audio Mode (see orderable part numbers for support)
• 48-pad QFN RoHS packages
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92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Software Support
• Intuitive TSI HD Sound graphical user interface that allows configurability and preference set-
tings
• 12 band fully parametric equalizer
• 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
• Enables improved voice articulation
• Compressor/limiter allows higher average volume level without resonances or damage to
speakers.
• TSI Vista APO wrapper
• Enables multiple APOs to be used with the TSI Driver
• Microphone Beam Forming, Acoustic Echo Cancellation, and Noise Suppression
• Dynamic Stream Switching
• Improved multi-streaming user experience with less support calls
• Broad 3rd party branded software including Creative, Dolby, DTS, and SRS
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TABLE OF CONTENTS
DESCRIPTION ............................................................................................................................ 11
Overview .................................................................................................................................................11
Orderable Part Numbers .........................................................................................................................11
DETAILED DESCRIPTION ......................................................................................................... 12
Port Functionality ....................................................................................................................................12
Port Characteristics ......................................................................................................................13
Vref_Out .......................................................................................................................................13
Jack Detect ..................................................................................................................................13
SPDIF Output ...............................................................................................................................14
Mono Output ...........................................................................................................................................17
Analog Mixer ...........................................................................................................................................17
ADC Multiplexers ....................................................................................................................................17
Power Management ................................................................................................................................17
AFG D0 ...................................................................................................................................................18
AFG D1 ...................................................................................................................................................19
AFG D2 ...................................................................................................................................................19
AFG D3 ...................................................................................................................................................19
AFG D3cold .................................................................................................................................19
Vendor Specific Function Group Power States D4/D5 ...........................................................................20
Low-voltage HDA Signaling ....................................................................................................................20
Multi-channel capture .............................................................................................................................20
Digital Microphone Support ....................................................................................................................22
Analog PC-Beep .....................................................................................................................................27
Digital PC-Beep ......................................................................................................................................27
Headphone Drivers .................................................................................................................................27
EAPD ......................................................................................................................................................28
BTL Amplifier ..........................................................................................................................................31
BTL Amplifier High-Pass Filter ................................................................................................................31
Filter Description ..........................................................................................................................31
GPIO .......................................................................................................................................................32
GPIO Pin mapping and shared functions .....................................................................................32
SPDIF/Digital Microphone/GPIO Selection ..................................................................................32
Digital Microphone/GPIO Selection .............................................................................................32
HD Audio HDA015-B support .................................................................................................................33
Digital Core Voltage Regulator ...............................................................................................................33
Aux Audio Support ..................................................................................................................................34
General conditions in Aux Audio Mode: .......................................................................................34
“Playback Path” Port Behavior .....................................................................................................34
“Record Path” Port Behavior ........................................................................................................36
EAPD ...........................................................................................................................................37
Analog PC_Beep .........................................................................................................................37
Firmware/Software Requirements: ...............................................................................................37
CHARACTERISTICS ................................................................................................................... 38
Electrical Specifications ..........................................................................................................................38
Absolute Maximum Ratings .........................................................................................................38
Recommended Operating Conditions ..........................................................................................38
92HD81 Analog Performance Characteristics ........................................................................................39
AC Timing Specs ....................................................................................................................................43
HD Audio Bus Timing ...................................................................................................................43
SPDIF Timing ...............................................................................................................................44
Digital Microphone Timing ...........................................................................................................44
Class-AB BTL Amplifier Performance .........................................................................................44
Capless Headphone Supply Characteristics ................................................................................45
FUNCTIONAL BLOCK DIAGRAMS ........................................................................................... 46
WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ........................................... 47
PORT CONFIGURATIONS ......................................................................................................... 48
Suggested Desktop Configurations ........................................................................................................48
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Suggested Mobile Port Configurations ...................................................................................................49
Pin Configuration Default Register Settings ............................................................................................50
WIDGET INFORMATION ........................................................................................................... 51
Widget List ..............................................................................................................................................51
Reset Key ...............................................................................................................................................53
Root (NID = 00h): VendorID ...................................................................................................................53
Root (NID = 00h): RevID ..............................................................................................................54
Root (NID = 00h): NodeInfo .........................................................................................................54
AFG (NID = 01h): NodeInfo ....................................................................................................................55
AFG (NID = 01h): FGType ...........................................................................................................55
AFG (NID = 01h): AFGCap ..........................................................................................................56
AFG (NID = 01h): PCMCap .........................................................................................................57
AFG (NID = 01h): StreamCap ......................................................................................................58
AFG (NID = 01h): InAmpCap .......................................................................................................59
AFG (NID = 01h): PwrStateCap ...................................................................................................60
AFG (NID = 01h): GPIOCnt .........................................................................................................61
AFG (NID = 01h): OutAmpCap ....................................................................................................61
AFG (NID = 01h): PwrState .........................................................................................................62
AFG (NID = 01h): UnsolResp ......................................................................................................63
AFG (NID = 01h): GPIO ...............................................................................................................63
AFG (NID = 01h): GPIOEn ...........................................................................................................64
AFG (NID = 01h): GPIODir ..........................................................................................................65
AFG (NID = 01h): GPIOWakeEn .................................................................................................65
AFG (NID = 01h): GPIOUnsol ......................................................................................................66
AFG (NID = 01h): GPIOSticky .....................................................................................................66
AFG (NID = 01h): SubID ..............................................................................................................67
AFG (NID = 01h): GPIOPlrty ........................................................................................................68
AFG (NID = 01h): GPIODrive .......................................................................................................68
AFG (NID = 01h): DMic ................................................................................................................69
AFG (NID = 01h): DACMode .......................................................................................................70
AFG (NID = 01h): ADCMode .......................................................................................................71
AFG (NID = 01h): EAPD ..............................................................................................................71
AFG (NID = 01h): PortUse ...........................................................................................................73
AFG (NID = 01h): VSPwrState .....................................................................................................74
AFG (NID = 01h): AnaPort ...........................................................................................................75
AFG (NID = 01h): AnaBeep .........................................................................................................76
AFG (NID = 01h): AnaBTL YC and YD Revisions .......................................................................76
AFG (NID = 01h): AnaBTL UA,TA, RA Revisions ........................................................................78
AFG (NID = 01h): AnaCapless .....................................................................................................81
AFG (NID = 01h): Reset ...............................................................................................................84
AFG (NID = 01h): AuxAudio .........................................................................................................84
PortA (NID = 0Ah): WCap .......................................................................................................................85
PortA (NID = 0Ah): PinCap ..........................................................................................................86
PortA (NID = 0Ah): ConLst ...........................................................................................................87
PortA (NID = 0Ah): ConLstEntry0 ................................................................................................88
PortA (NID = 0Ah): InAmpLeft ......................................................................................................88
PortA (NID = 0Ah): InAmpRight ...................................................................................................89
PortA (NID = 0Ah): ConSelectCtrl ................................................................................................89
PortA (NID = 0Ah): PwrState .......................................................................................................90
PortA (NID = 0Ah): PinWCntrl ......................................................................................................90
PortA (NID = 0Ah): UnsolResp ....................................................................................................91
PortA (NID = 0Ah): ChSense .......................................................................................................92
PortA (NID = 0Ah): EAPDBTLLR .................................................................................................92
PortA (NID = 0Ah): ConfigDefault ................................................................................................93
PortB (NID = 0Bh): WCap .......................................................................................................................95
PortB (NID = 0Bh): PinCap ..........................................................................................................97
PortB (NID = 0Bh): ConLst ...........................................................................................................98
PortB (NID = 0Bh): ConLstEntry0 ................................................................................................99
PortB (NID = 0Bh): ConSelectCtrl ................................................................................................99
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PortB (NID = 0Bh): PwrState .......................................................................................................99
PortB (NID = 0Bh): PinWCntrl ....................................................................................................100
PortB (NID = 0Bh): UnsolResp ..................................................................................................101
PortB (NID = 0Bh): ChSense .....................................................................................................101
PortB (NID = 0Bh): EAPDBTLLR ...............................................................................................102
PortB (NID = 0Bh): ConfigDefault ..............................................................................................102
PortC (NID = 0Ch): WCap ....................................................................................................................105
PortC (NID = 0Ch): PinCap ........................................................................................................106
PortC (NID = 0Ch): ConLst ........................................................................................................107
PortC (NID = 0Ch): ConLstEntry0 ..............................................................................................108
PortC (NID = 0Ch): InAmpLeft ...................................................................................................108
PortC (NID = 0Ch): InAmpRight .................................................................................................109
PortC (NID = 0Ch): ConSelectCtrl .............................................................................................109
PortC (NID = 0Ch): PwrState .....................................................................................................110
PortC (NID = 0Ch): PinWCntrl ...................................................................................................110
PortC (NID = 0Ch): UnsolResp ..................................................................................................111
PortC (NID = 0Ch): ChSense .....................................................................................................112
PortC (NID = 0Ch): EAPDBTLLR ...............................................................................................112
PortC (NID = 0Ch): ConfigDefault ..............................................................................................113
PortD (NID = 0Dh): WCap ....................................................................................................................115
PortD (NID = 0Dh): PinCap ........................................................................................................117
PortD (NID = 0Dh): ConLst ........................................................................................................118
PortD (NID = 0Dh): ConLstEntry0 ..............................................................................................119
PortD (NID = 0Dh): ConSelectCtrl .............................................................................................119
PortD (NID = 0Dh): PwrState .....................................................................................................119
PortD (NID = 0Dh): PinWCntrl ...................................................................................................120
PortD (NID = 0Dh): EAPDBTLLR ...............................................................................................121
PortD (NID = 0Dh): ConfigDefault ..............................................................................................121
PortE (NID = 0Eh): WCap .....................................................................................................................124
PortE (NID = 0Eh): PinCap ........................................................................................................125
PortE (NID = 0Eh): ConLst .........................................................................................................126
PortE (NID = 0Eh): ConLstEntry0 ..............................................................................................127
PortE (NID = 0Eh): InAmpLeft ....................................................................................................127
PortE (NID = 0Eh): InAmpRight .................................................................................................128
PortE (NID = 0Eh): ConSelectCtrl ..............................................................................................128
PortE (NID = 0Eh): PwrState .....................................................................................................129
PortE (NID = 0Eh): PinWCntrl ....................................................................................................129
PortE (NID = 0Eh): UnsolResp ..................................................................................................130
PortE (NID = 0Eh): ChSense .....................................................................................................130
PortE (NID = 0Eh): EAPDBTLLR ...............................................................................................131
PortE (NID = 0Eh): ConfigDefault ..............................................................................................131
PortF (NID = 0Fh): WCap .....................................................................................................................134
PortF (NID = 0Fh): PinCap .........................................................................................................135
PortF (NID = 0Fh): ConLst .........................................................................................................136
PortF (NID = 0Fh): ConLstEntry0 ...............................................................................................137
PortF (NID = 0Fh): InAmpLeft ....................................................................................................137
PortF (NID = 0Fh): InAmpRight ..................................................................................................138
PortF (NID = 0Fh): ConSelectCtrl ..............................................................................................138
PortF (NID = 0Fh): PwrState ......................................................................................................139
PortF (NID = 0Fh): PinWCntrl ....................................................................................................139
PortF (NID = 0Fh): UnsolResp ...................................................................................................140
PortF (NID = 0Fh): ChSense ......................................................................................................141
PortF (NID = 0Fh): EAPDBTLLR ...............................................................................................141
PortF (NID = 0Fh): ConfigDefault ...............................................................................................142
MonoOut (NID = 10h): WCap ...............................................................................................................145
MonoOut (NID = 10h): PinCap ...................................................................................................146
MonoOut (NID = 10h): ConLst ...................................................................................................147
MonoOut (NID = 10h): ConLstEntry0 .........................................................................................148
MonoOut (NID = 10h): PwrState ................................................................................................148
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