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AD1986A Dataheets PDF



Part Number AD1986A
Manufacturers Analog Devices
Logo Analog Devices
Description HD Audio SoundMAX Codec
Datasheet AD1986A DatasheetAD1986A Datasheet (PDF)

www.DataSheet4U.com AC ’97 and HD Audio SoundMAX Codec AD1986A FEATURES Supports both AC ’97 and HD audio interfaces 6 DAC channels for 5.1 surround S/PDIF output Integrated headphone amplifiers Variable rate audio Double rate audio (Fs = 96 kHz) Greater than 90 dB dynamic range 20-bit resolution on all DACs 20-bit resolution on all ADCs Line-level mono phone input High quality differential CD input Selectable MIC input with preamp AUX and line-in stereo inputs External amplifier power down (EA.

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www.DataSheet4U.com AC ’97 and HD Audio SoundMAX Codec AD1986A FEATURES Supports both AC ’97 and HD audio interfaces 6 DAC channels for 5.1 surround S/PDIF output Integrated headphone amplifiers Variable rate audio Double rate audio (Fs = 96 kHz) Greater than 90 dB dynamic range 20-bit resolution on all DACs 20-bit resolution on all ADCs Line-level mono phone input High quality differential CD input Selectable MIC input with preamp AUX and line-in stereo inputs External amplifier power down (EAPD) Power management modes Jack sensing and device identification 48-lead LQFP package ENHANCED FEATURES Integrated parametric speaker equalizer Stereo microphone with up to 30 dB gain boost Integrated PLL for system clocking Variable sample rate: 7 kHz to 96 kHz 7 kHz to 48 kHz in 1 Hz increments 96 kHz for double rate audio Jack sense with autotopology switching Jack presence detection on up to 8 jacks Three software-controlled microphone bias signals Software-enabled outputs for jack sharing Auto-down mix and channel spreading Microphone-to-mono output for speakerphone Stereo microphone pass-through to mixer Built-in microphone/center/LFE/line-in sharing Built-in SURROUND/LINE_IN sharing Center/LFE swapping supporting all vendor speakers Microphone left/right swapping Reduced support component count General-purpose digital output pin (GPO) LINE_OUT and HP_OUT, headphone drive on both Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 © 2005 Analog Devices, Inc. All rights reserved. DataSheet 4 U .com www.DataSheet4U.com AD1986A TABLE OF CONTENTS Functional Block Diagram .............................................................. 4 Specifications..................................................................................... 5 Absolute Maximum Ratings............................................................ 9 Environmental Conditions.......................................................... 9 ESD Caution.................................................................................. 9 Pin Configuration And Function Description ........................... 10 AC’97 Registers............................................................................... 12 HD Audio Widgets ......................................................................... 14 AC ’97 Register Details .................................................................. 21 Reset (Register 0x00).................................................................. 21 Master Volume (Register 0x02) ................................................ 21 Headphone Volume (Register 0x04) ........................................ 22 Mono Volume (Register 0x06).................................................. 22 PC Beep (Register 0x0A)........................................................... 23 Phone Volume (Register 0x0C) ................................................ 23 Microphone Volume (Register 0x0E) ...................................... 24 Line_In Volume (Register 0x10)............................................... 25 CD Volume (Register 0x12) ...................................................... 25 AUX Volume (Register 0x16).................................................... 26 Front DAC Volume (Register 0x18)......................................... 26 ADC Select (Register 0x1A)...................................................... 27 ADC Volume (Register 0x1C) .................................................. 28 General-Purpose (Register 0x20)............................................. 29 Audio Int and Paging (Register 0x24) ..................................... 29 Power-Down Ctrl/Stat (Register 0x26).................................... 30 Extended Audio ID (Register 0x28)......................................... 31 Ext’d Audio Stat/Ctrl (Register 0x2A)...................................... 32 Front DAC PCM Rate (Register 0x2C) ................................... 33 Surround DAC PCM Rate (Register 0x2E)............................. 34 C/LFE DAC PCM Rate (Register 0x30) .................................. 34 ADC PCM Rate (Register 0x32) .............................................. 34 C/LFE DAC Volume (Register 0x36)....................................... 35 Surround DAC Volume (Register 0x38).................................. 35 SPDIF Control (Register 0x3A)................................................ 36 EQ Control Register (Register 0x60) ......................................


AD1986 AD1986A BUS47


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