92HD87 Datasheet, PDF (3/204 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+STEREO SPEAKER AMPLIFIER+CAPLESS HP+LDO
TABLE OF CONTENTS
1. DESCRIPTION ........................................................................................................................ 10
1.1. Overview ..........................................................................................................................................10
1.2. Orderable Part Numbers ..................................................................................................................10
2. DETAILED DESCRIPTION ..................................................................................................... 11
2.1. Port Functionality .............................................................................................................................11
2.1.1. Port Characteristics ............................................................................................................11
2.1.2. Vref_Out .............................................................................................................................12
2.1.3. Jack Detect ........................................................................................................................12
2.2. Analog Mixer ....................................................................................................................................13
2.3. ADC Multiplexers .............................................................................................................................13
2.4. Power Management .........................................................................................................................13
2.5. AFG D0 ............................................................................................................................................14
2.6. AFG D1 ............................................................................................................................................14
2.7. AFG D2 ............................................................................................................................................14
2.8. AFG D3 ............................................................................................................................................14
2.8.1. AFG D3cold .......................................................................................................................15
2.9. Vendor Specific Function Group Power States D4/D5 ....................................................................15
2.10. Low-voltage HDA Signaling ...........................................................................................................15
2.11. Multi-channel capture ....................................................................................................................16
2.12. Digital Microphone Support ...........................................................................................................18
2.13. Analog PC-Beep ............................................................................................................................22
2.14. Digital PC-Beep .............................................................................................................................22
2.15. Headphone Drivers ........................................................................................................................22
2.16. EAPD .............................................................................................................................................23
2.17. BTL Amplifier .................................................................................................................................26
2.18. BTL Amplifier High-Pass Filter .......................................................................................................26
2.18.1. Filter Description ..............................................................................................................26
2.19. GPIO ..............................................................................................................................................27
2.19.1. GPIO Pin mapping and shared functions .........................................................................27
2.19.2. Digital Microphone/GPIO Selection .................................................................................27
2.20. HD Audio HDA015-B support ........................................................................................................27
2.21. Digital Core Voltage Regulator ......................................................................................................28
2.22. Aux Audio Support .........................................................................................................................28
2.22.1. General conditions in Aux Audio Mode: ...........................................................................28
2.22.2. “Playback Path” Port Behavior .........................................................................................29
2.22.3. When Port E presence detect = 0 ....................................................................................29
2.22.4. When Port E presence detect = 1 ....................................................................................29
2.22.5. SYSTEM DIAGRAMS ......................................................................................................31
2.22.6. EAPD ...............................................................................................................................32
2.22.7. Analog PC_Beep .............................................................................................................32
2.22.8. Firmware/Software Requirements: ...................................................................................32
3. CHARACTERISTICS ............................................................................................................... 33
3.1. Electrical Specifications ...................................................................................................................33
3.1.1. Absolute Maximum Ratings ...............................................................................................33
3.1.2. Recommended Operating Conditions ................................................................................33
3.2. 92HD87 Analog Performance Characteristics .................................................................................34
3.3. AC Timing Specs .............................................................................................................................38
3.3.1. HD Audio Bus Timing .........................................................................................................38
3.3.2. Digital Microphone Timing .................................................................................................39
3.3.3. Class-AB BTL Amplifier Performance ...............................................................................39
3.3.4. Capless Headphone Supply Characteristics ......................................................................39
4. FUNCTIONAL BLOCK DIAGRAMS ....................................................................................... 40
5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 41
6. PORT CONFIGURATIONS ..................................................................................................... 42
6.1. Pin Configuration Default Register Settings .....................................................................................43
7. WIDGET INFORMATION ........................................................................................................ 44
7.1. Widget List .......................................................................................................................................44
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD87