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WM9713 PDF预览

WM9713

更新时间: 2024-11-06 22:41:27
品牌 Logo 应用领域
欧胜 - WOLFSON /
页数 文件大小 规格书
111页 1061K
描述
AC 97 AUDIO + TOUCHPANEL CODEC

WM9713 数据手册

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WM9713L  
1
AC’97 Audio + Touchpanel CODEC  
DESCRIPTION  
FEATURES  
AC’97 Rev 2.2 compatible stereo codec  
- DAC SNR 94dB, THD –85dB  
The WM9713L is a highly integrated input/output device  
designed for mobile computing and communications.  
- ADC SNR 87dB, THD –86dB  
The chip is architected for dual CODEC operation,  
supporting Hi-Fi stereo Codec functions via the AC link  
interface, and additionally supporting voice Codec functions  
via a PCM type Synchronous Serial Port (SSP). A third Aux  
DAC is provided which may be used to support generation  
of supervisory tones, or ring-tones etc. at different sample  
rates to the main codec.  
- Variable Rate Audio, supports all WinCE sample rates  
- Tone Control, Bass Boost and 3D Enhancement  
On-chip 45mW headphone driver  
On-chip 400mW mono or stereo speaker drivers  
Stereo, mono or differential microphone input  
- Automatic Level Control (ALC)  
- Mic insert and mic button press detection  
Auxiliary mono DAC (ring tone or DC level generation)  
Seamless interface to wireless chipset  
Resistive touchpanel interface  
The device can connect directly to a 4-wire or 5-wire touch-  
panel, mono or stereo microphones, stereo headphones  
and a stereo speaker, reducing total component count in the  
system. Cap-less connections to the headphones,  
speakers, and earpiece may be used, saving cost and  
board area. Additionally, multiple analog input and output  
pins are provided for seamless integration with analog  
connected wireless communication devices.  
- Supports 4-wire and 5-wire panels  
- 12-bit resolution, INL 2 LSBs (<0.5 pixels)  
- X, Y and touch-pressure (Z) measurement  
- Pen-down detection supported in Sleep Mode  
Additional PCM/I2S interface to support voice CODEC  
PLL derived audio clocks.  
All device functions are accessed and controlled through a  
single AC-Link interface compliant with the AC’97 standard.  
The 24.576 MHz masterclock can be input directly or  
generated internally from a 13MHz (or other frequency)  
clock by an onboard PLL. The PLL supports a wide range  
of input clock from 2.048Mhz to 78.6Mhz.  
Supports input clock ranging from 2.048Mhz to 78.6Mhz  
1.8V to 3.6V supplies (digital down to 1.62V, speaker up to  
4.2V)  
7x7mm 48-pin QFN package  
APPLICATIONS  
The WM9713L operates at supply voltages from 1.8 to 3.6  
Volts. Each section of the chip can be powered down under  
software control to save power. The device is available in a  
small leadless 7x7mm QFN package, ideal for use in hand-  
held portable systems.  
Personal Digital Assistants (PDA) with or without phone  
Smartphones  
Handheld and Tablet Computers  
BLOCK DIAGRAM  
WOLFSON MICROELECTRONICS plc  
Preliminary Technical Data, March 2004, Rev 2.2  
www.wolfsonmicro.com  
Copyright 2004 Wolfson Microelectronics plc  

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