92HD81 Datasheet, PDF (3/279 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
TABLE OF CONTENTS
1. DESCRIPTION ........................................................................................................................ 11
1.1. Overview ..........................................................................................................................................11
1.2. Orderable Part Numbers ..................................................................................................................11
2. DETAILED DESCRIPTION ..................................................................................................... 12
2.1. Port Functionality .............................................................................................................................12
2.1.1. Port Characteristics ............................................................................................................13
2.1.2. Vref_Out .............................................................................................................................13
2.1.3. Jack Detect ........................................................................................................................13
2.1.4. SPDIF Output .....................................................................................................................14
2.2. Mono Output ....................................................................................................................................17
2.3. Analog Mixer ....................................................................................................................................17
2.4. ADC Multiplexers .............................................................................................................................17
2.5. Power Management .........................................................................................................................17
2.6. AFG D0 ............................................................................................................................................18
2.7. AFG D1 ............................................................................................................................................19
2.8. AFG D2 ............................................................................................................................................19
2.9. AFG D3 ............................................................................................................................................19
2.9.1. AFG D3cold .......................................................................................................................19
2.10. Vendor Specific Function Group Power States D4/D5 ..................................................................20
2.11. Low-voltage HDA Signaling ...........................................................................................................20
2.12. Multi-channel capture ....................................................................................................................20
2.13. Digital Microphone Support ...........................................................................................................22
2.14. Analog PC-Beep ............................................................................................................................27
2.15. Digital PC-Beep .............................................................................................................................27
2.16. Headphone Drivers ........................................................................................................................27
2.17. EAPD .............................................................................................................................................28
2.18. BTL Amplifier .................................................................................................................................31
2.19. BTL Amplifier High-Pass Filter .......................................................................................................31
2.19.1. Filter Description ..............................................................................................................31
2.20. GPIO ..............................................................................................................................................32
2.20.1. GPIO Pin mapping and shared functions .........................................................................32
2.20.2. SPDIF/Digital Microphone/GPIO Selection ......................................................................32
2.20.3. Digital Microphone/GPIO Selection .................................................................................32
2.21. HD Audio HDA015-B support ........................................................................................................33
2.22. Digital Core Voltage Regulator ......................................................................................................33
2.23. Aux Audio Support .........................................................................................................................34
2.23.1. General conditions in Aux Audio Mode: ...........................................................................34
2.23.2. “Playback Path” Port Behavior .........................................................................................34
2.23.3. “Record Path” Port Behavior ............................................................................................36
2.23.4. EAPD ...............................................................................................................................37
2.23.5. Analog PC_Beep .............................................................................................................37
2.23.6. Firmware/Software Requirements: ...................................................................................37
3. CHARACTERISTICS ............................................................................................................... 38
3.1. Electrical Specifications ...................................................................................................................38
3.1.1. Absolute Maximum Ratings ...............................................................................................38
3.1.2. Recommended Operating Conditions ................................................................................38
3.2. 92HD81 Analog Performance Characteristics .................................................................................39
3.3. AC Timing Specs .............................................................................................................................43
3.3.1. HD Audio Bus Timing .........................................................................................................43
3.3.2. SPDIF Timing .....................................................................................................................44
3.3.3. Digital Microphone Timing .................................................................................................44
3.3.4. Class-AB BTL Amplifier Performance ...............................................................................44
3.3.5. Capless Headphone Supply Characteristics ......................................................................45
4. FUNCTIONAL BLOCK DIAGRAMS ....................................................................................... 46
5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 47
6. PORT CONFIGURATIONS ..................................................................................................... 48
6.1. Suggested Desktop Configurations .................................................................................................48
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD81