92hd81 Integrated Device Technology, 92hd81 Datasheet - Page 3

• Manufacturer Part Number: 92hd81
• Description: Single Chip Pc Audio System
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
TABLE OF CONTENTS
92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
1. DESCRIPTION ........................................................................................................................ 10
2. DETAILED DESCRIPTION ..................................................................................................... 12
3. CHARACTERISTICS ............................................................................................................... 39
4. FUNCTIONAL BLOCK DIAGRAMS ....................................................................................... 48
1.1. Overview ..........................................................................................................................................10
1.2. Orderable Part Numbers ..................................................................................................................10
1.3. Block Diagram .................................................................................................................................11
2.1. Port Functionality .............................................................................................................................12
2.2. Mono Output ....................................................................................................................................17
2.3. Analog Mixer ....................................................................................................................................18
2.4. ADC Multiplexers .............................................................................................................................18
2.5. Power Management .........................................................................................................................18
2.6. AFG D0 ............................................................................................................................................19
2.7. AFG D1 ............................................................................................................................................19
2.8. AFG D2 ............................................................................................................................................19
2.9. AFG D3 ............................................................................................................................................20
2.10. Vendor Specific Function Group Power States D4/D5 ..................................................................20
2.11. Low-voltage HDA Signaling ...........................................................................................................21
2.12. Multi-channel capture ....................................................................................................................21
2.13. Digital Microphone Support ...........................................................................................................23
2.14. Analog PC-Beep ............................................................................................................................28
2.15. Digital PC-Beep .............................................................................................................................28
2.16. Headphone Drivers ........................................................................................................................28
2.17. EAPD .............................................................................................................................................29
2.18. BTL Amplifier .................................................................................................................................32
2.19. GPIO ..............................................................................................................................................33
2.20. HD Audio ECR 15b support ...........................................................................................................34
2.21. Digital Core Voltage Regulator ......................................................................................................34
2.22. Aux Audio Support (92HD81B1X only) ..........................................................................................34
3.1. Electrical Specifications ...................................................................................................................39
3.2. 92HD81 5V, 4.75V, and 3.3V Analog Performance Characteristics
3.3. AC Timing Specs .............................................................................................................................45
2.1.1. Port Characteristics ............................................................................................................13
2.1.2. Vref_Out .............................................................................................................................14
2.1.3. Jack Detect ........................................................................................................................14
2.1.4. SPDIF Output .....................................................................................................................14
2.9.1. AFG D3cold .......................................................................................................................20
2.19.1. GPIO Pin mapping and shared functions .........................................................................33
2.19.2. SPDIF/Digital Microphone/GPIO Selection ......................................................................33
2.19.3. Digital Microphone/GPIO Selection .................................................................................33
2.22.1. General conditions in Aux Audio Mode: ...........................................................................35
2.22.2. “Playback Path” Port Behavior .........................................................................................35
2.22.3. “Record Path” Port Behavior ............................................................................................37
2.22.4. EAPD ...............................................................................................................................38
2.22.5. Analog PC_Beep .............................................................................................................38
2.22.6. Firmware/Software Requirements: ...................................................................................38
3.1.1. Absolute Maximum Ratings ...............................................................................................39
3.1.2. Recommended Operating Conditions ................................................................................39
3.3.1. HD Audio Bus Timing .........................................................................................................45
3.3.2. SPDIF Timing .....................................................................................................................46
3.3.3. Digital Microphone Timing .................................................................................................46
3.3.4. Class-AB BTL Amplifier Performance ...............................................................................47
3.3.5. Capless Headphone Supply Characteristics ......................................................................47
3
(PRELIMINARY) ....................40
92HD81
PC AUDIO
V 0.97 01/09