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4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER Description
The 92HD71B8 codec is a low power optimized, high fidelity, 4-channel audio codec compatible with Intel’s High Definition (HD) Audio Interface. The 92HD71B8 codec provides stereo 24-bit resolution with sample rates up to 192kHz. Dual SPDIF provides connectivity to consumer electronic equipment that is WLP complaint. The 92HD71B8 provides high quality, HD Audio capability to notebook and business desktop PC applications. • • • • • • • • • • • • •
92HD71B8
Support for 1.5V and 3.3V HDA signaling with runtime selection Digital microphone input (mono, stereo, or quad array) 3 Adjustable VREF Out pins for microphone bias High performance analog mixer option 6 analog ports Supports to 3 stereo microphone inputs Two-pin volume up/down control Digital PC Beep to all outputs Integrated headphone amp Jack insertion detection Sample rates up to 192kHz +3.3 V, +4 V, +4.75 V and +5 V analog power supply options 48-pin QFP and 48-pad QFN RoHS packages
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 for laptop sub-woofer
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Microsoft WLP 3/4 premium logo compliant, as defined in WLP 3.09 Optimized and flexible power management with pop/click mitigation 2 independent S/PDIF Output converters for WLP compliant HDMI/SPDIF support.
Preliminary Datasheet
Block Diagram
Port A Port B Port C Port D Port E Port F SPDIF Out 1 SPDIF Out 2
High Definition Interface
DSP
DUAL SPDIF
IDT™ CONFIDENTIAL AND PROPRIETARY 4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
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Ports
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92HD71B8
V 0.91 09/07
92HD71B8 4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
Software Support
• • • Intuitive graphical user interface that allows configurability and preference settings SKPI (Kernel Processing Interface) • Enables plug-ins that can operate globally on all audio streams of the system 12 band fully parametric equalizer (SKPI plug-in) • 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 (SKPI plug-in) • Enables improved voice articulation • Compressor/limiter allows higher average noise level without resonances IDT Vista APO wrapper • Enables multiple APOs to be used with the IDT Driver Microphone Beam Forming, Acoustic Echo Cancellation, and Noise Suppression Dynamic Stream Switching • Improved multi-streaming user experience with less support calls Dolby PC Entertainment Experience Logo Program • Dolby Home Theater™ (HT) • Dolby Sound Room™ (SR) Dolby Technologies • Dolby Headphone™, Dolby Virtual Speaker™ • Dolby ProLogic II™, Dolby ProLogic IIx™ • Dolby Digital Live™ (DDL) Maxx Player™ from Waves WOWTM and Tru SurroundTM from SRS
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IDT™ CONFIDENTIAL AND PROPRIETARY 4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
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92HD71B8
V 0.91 09/07
92HD71B8 4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
TABLE OF CONTENTS
1. DESCRIPTION ........................................................................................................................ 10
1.1. Overview ..........................................................................................................................................10 1.2. Orderable Part numbers ..................................................................................................................11 1.3. Block Diagram .................................................................................................................................11 1.4. Detailed Description .........................................................................................................................12 1.4.1. Low-voltage High Definition Audio Link Signaling ..............................................................12 1.4.2. Port Functionality ...............................................................................................................12 1.4.3. Port Characteristics ............................................................................................................12 1.4.4. Jack Detect ........................................................................................................................13 1.4.5. SPDIF Output .....................................................................................................................13 1.4.6. Mono Output ......................................................................................................................14 1.4.7. Analog Mixer ......................................................................................................................15 1.4.8. Input Multiplexers ...............................................................................................................15 1.4.9. ADC Multiplexers ...............................................................................................................15 1.4.10. Power Management .........................................................................................................15 1.4.11. Multi-channel capture .......................................................................................................16 1.4.12. EAPD ...............................................................................................................................17 1.4.13. Digital Microphone Support ..............................................................................................18 1.4.14. Analog PC-Beep ..............................................................................................................23 1.4.15. Headphone Drivers ..........................................................................................................23 1.4.16. GPIO ................................................................................................................................23 1.4.17. External Volume Control ..................................................................................................24
2. CHARACTERISTICS ............................................................................................................... 26
2.1. Electrical Specifications ...................................................................................................................26 2.1.1. Absolute Maximum Ratings ...............................................................................................26 2.1.2. Recommended Operating Conditions ................................................................................26 2.2. 92HD71B8 5V, 4.75V, and 3.3V Analog Performance Characteristics (PRELIMINARY) ...............27
3. PORT CONFIGURATIONS ..................................................................................................... 32 4. FUNCTIONAL BLOCK DIAGRAM .......................................................................................... 33 5. WIDGET INFORMATION AND SUPPORTED COMMAND VERBS ....................................... 34
5.1. Widget List 92HD71B .....................................................................................................................35
6. PIN CONFIGURATION DEFAULT REGISTER SETTINGS .................................................... 36 7. WIDGET INFORMATION ........................................................................................................ 37 8. SUPPORTED VERBS AND COMMANDS .............................................................................. 38
8.1. Root Node (NID = 00) ......................................................................................................................38 8.1.1. Root VendorID ...................................................................................................................38 8.1.2. Root RevID ........................................................................................................................38 8.2. AFG Node (NID = 01 .......................................................................................................................39 8.2.1. AFG Reset .........................................................................................................................39 8.2.2. AFG NodeInfo ....................................................................................................................39 8.2.4. AFG AFGCap .....................................................................................................................40 8.2.3. AFG FGType ......................................................................................................................40 8.2.5. AFG PCMCap ....................................................................................................................41 8.2.6. AFG StreamCap ................................................................................................................42 8.2.7. AFG InAmpCap ..................................................................................................................43 8.2.8. AFG PwrStateCap .............................................................................................................43 8.2.10. AFG OutAmpCap .............................................................................................................44 8.2.9. AFG GPIOCnt ....................................................................................................................44 8.2.12. AFG UnsolResp ...............................................................................................................45 8.2.11. AFG PwrState .................
