92HD99B Datasheet, PDF (3/225 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+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 .............................................................................................................................13
2.1.3. Jack Detect ........................................................................................................................13
2.2. Mixer ................................................................................................................................................13
2.3. ADC Multiplexers .............................................................................................................................14
2.4. Power Management .........................................................................................................................14
2.5. AFG D0 ............................................................................................................................................15
2.6. AFG D1 ............................................................................................................................................15
2.7. AFG D2 ............................................................................................................................................15
2.8. AFG D3 ............................................................................................................................................15
2.8.1. AFG D3cold .......................................................................................................................15
2.9. Vendor Specific Function Group Power States D4/D5 ....................................................................16
2.10. Low-voltage HDA Signaling ...........................................................................................................16
2.11. Multi-channel capture ....................................................................................................................16
2.12. EAPD .............................................................................................................................................18
2.13. Digital Microphone Support ...........................................................................................................21
2.14. Analog PC-Beep ............................................................................................................................24
2.15. Digital PC-Beep .............................................................................................................................26
2.16. Headphone Drivers ........................................................................................................................27
2.17. BTL Amplifier .................................................................................................................................27
2.18. BTL Amplifier High-Pass Filter .......................................................................................................27
2.18.1. Filter Description ..............................................................................................................28
2.19. EQ ..................................................................................................................................................28
2.20. Combo Jack Detection ...................................................................................................................28
2.21. GPIO ..............................................................................................................................................29
2.21.1. GPIO Pin mapping and shared functions .........................................................................29
2.21.2. Digital Microphone/GPIO Selection .................................................................................29
2.21.3. Digital Microphone/GPIO Selection .................................................................................29
2.22. HD Audio HDA015-B support ........................................................................................................29
2.23. Digital Core Voltage Regulator ......................................................................................................30
2.24. Aux Audio Support .........................................................................................................................31
2.24.1. General conditions in Aux Audio Mode: ...........................................................................31
2.24.2. Entering Aux Audio Mode ................................................................................................32
2.24.3. “Playback Path” Port Behavior (AnaIog I/O) ....................................................................33
2.24.4. When Port E presence detect = 0 ....................................................................................33
2.24.5. When Port E presence detect = 1 ....................................................................................33
2.24.6. SYSTEM DIAGRAMS (Analog I/O) ..................................................................................34
2.24.7. EAPD ...............................................................................................................................35
2.24.8. Analog PC_Beep .............................................................................................................35
2.24.9. Class-D BTL Issues .........................................................................................................35
2.24.10. Firmware/Software Requirements: .................................................................................35
2.25. Microphone Mute Input ..................................................................................................................36
3. CHARACTERISTICS ............................................................................................................... 37
3.1. Electrical Specifications ...................................................................................................................37
3.1.1. Absolute Maximum Ratings ...............................................................................................37
3.1.2. Recommended Operating Conditions ................................................................................37
3.2. 92HD99 Analog Performance Characteristics .................................................................................38
3.3. Class-D BTL Amplifier Performance ................................................................................................41
3.4. Capless Headphone Supply Characteristics ....................................................................................42
3.5. AC Timing Specs .............................................................................................................................42
3.5.1. HD Audio Bus Timing .........................................................................................................42
3.5.2. Digital Microphone Timing .................................................................................................43
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
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92HD99