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WM9710SEFL/V 데이터시트(PDF) 1 Page - Wolfson Microelectronics plc |
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WM9710SEFL/V 데이터시트(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 32 page  WM9710 AC’97 Audio CODEC and Mixer with Integrated Headphone Driver WOLFSON MICROELECTRONICS plc www.wolfsonmicro.com Production Data, December 2003, Rev 4.0 Copyright 2003 Wolfson Microelectronics plc DESCRIPTION The WM9710 is a high-quality stereo audio codec with an integrated headphone driver. The device is compliant with the Intel AC’97 Rev 2.2 specification. It performs full-duplex 18-bit codec functions and supports variable sample rates from 8kHz to 48kHz with high signal to noise ratio. Analogue mixers are included to mix external analogue signals into the playback or record path. The WM9710 allows designers to easily integrate phone functions with other audio functions such as MP3 playback and voice recording. Mono inputs and outputs are provided to connect to an external voice codec. The on-chip headphone driver can distinguish between a stereo headphone and mono headset, and route the signals accordingly. Optional AC’97 features include 3D sound enhancement, primary/secondary mode operation and S/PDIF or I 2S output. The 5-pin bi-directional AC-Link interface transfers control data, DAC and ADC words to and from the AC’97 controller. The WM9710 is fully operable on 3V or 5V or mixed 3/5V supplies, and is packaged in a leadless, chip scale QFN package with 7mm body size or 48-pin TQFP package. FEATURES • AC’97 rev2.2 compliant, 18-bit stereo codec • Integrated headphone driver • Automatic headset detection and switching (for stereo headphones / mono phone headsets) • Separately mixed mono output for phone TX path (also includes headphone buffer for mono earpiece) • Multiple channel input mixer • Mono inputs for phone RX and PCBEEP signals • On-chip sample rate conversion, supports rates from 8kHz to 48kHz. DAC and ADC rates are fully independent. • Optional S/PDIF or I 2S digital audio output • 3V to 5V operation • Each circuit block can be separately powered on or off • Leadless 7mm × 7mm × 0.9mm QFN or 48-pin TQFP package APPLICATIONS • Personal Digital Assistants and ‘Smartphones’ • WinCE systems BLOCK DIAGRAM W WM9710 DVDD1 DGND1 DAC L HPGND DAC R DIGITAL FILTERS Σ∆ MODULATION VARIABLE RATE AUDIO 16 / 32Ohm headphone CLOCK OSC HPOUTL HPOUTR DACVOL (Reg 18h) HPVOL (Reg 04h) LINEINVOL (Reg 10h) MICVOL (Reg 0Eh) RECORD GAIN (Reg 1Ch) RECORD SELECT (Reg 1Ah) LINEOUTL LINEOUTR MASTER VOL (Reg 02h) CONTROL LOGIC 0/20 dB MIC BOOST (Reg 0Eh) M U X MIC2 MIC1 M U X M U X HPOUTL headset autodetect CDR CDL LINEINR LINEINL CDGND MIC SELECT (Reg 20h) ADC R ADC L MIXVOL (Reg 72h) CX3D1 CX3D2 M U X HPND (Reg 5Ch) MONO VOL (Reg 06h) MONO_OUT (TX) M U X M U X MIX (Reg 20h) PSEL (Reg 5Ch) 3D PHONE (Reg 0Ah) (Reg 0Ch) MUX ADCNDAC (Reg 5Ch) CDVOL (Reg 12h) DVDD2 DGND2 24.576MHz VREFOUT VREF AC'97 INTERFACE POP (Reg 20h) PHIZ (Reg 78h) |
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