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WM9710

Wolfson Microelectronics plc
Part Number WM9710
Manufacturer Wolfson Microelectronics plc
Description AC97 Audio CODEC/Mixer
Published Apr 17, 2005
Detailed Description WM9710 AC’97 Audio CODEC and Mixer with Integrated Headphone Driver DESCRIPTION The WM9710 is a high-quality stereo audi...
Datasheet PDF File WM9710 PDF File

WM9710
WM9710

Overview
WM9710 AC’97 Audio CODEC and Mixer with Integrated Headphone Driver 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, 2 primary/secondary mode operation and S/PDIF or I S 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 I2S 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 DGND1 DVDD1 DGND2 DVDD2 CX3D1 CX3D2 W WM9710 LINEINVOL (Reg 10h) CDVOL...


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