欢迎访问ic37.com |
会员登录 免费注册
发布采购

WM9715LGEFL/RV 参数 Datasheet PDF下载

WM9715LGEFL/RV图片预览
型号: WM9715LGEFL/RV
PDF下载: 下载PDF文件 查看货源
内容描述: AC'97音频和触摸屏CODEC [AC’97 Audio and Touchpanel CODEC]
分类和应用:
文件页数/大小: 77 页 / 900 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
 浏览型号WM9715LGEFL/RV的Datasheet PDF文件第9页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第10页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第11页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第12页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第14页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第15页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第16页浏览型号WM9715LGEFL/RV的Datasheet PDF文件第17页  
Production Data  
WM9715L  
DEVICE DESCRIPTION  
INTRODUCTION  
The WM9715L is designed to meet the mixed-signal requirements of portable and wireless computer  
systems. It includes audio recording and playback, touchpanel digitisation, battery monitoring,  
auxiliary ADC and interrupt functions, all controlled through a single 5-wire AC-Link interface.  
SOFTWARE SUPPORT  
The basic audio features of the WM9715L are software compatible with standard AC’97 device  
drivers. However, to better support the touchpanel and other additional functions, Wolfson  
Microelectronics supplies custom device drivers for selected CPUs and operating systems. Please  
contact your local Wolfson Sales Office for more information.  
AC’97 COMPATIBILITY  
The WM9715L uses an AC’97 interface to communicate with a microprocessor or controller. The  
audio functions are largely compliant with AC’97 Revision 2.2. The following differences from the  
AC’97 standard are noted:  
Pinout: The function of some pins has been changed to support device specific features.  
The PHONE and PCBEEP pins have been moved to different locations on the device  
package.  
Package: The default package for the WM9715L is a 7×7mm leadless QFN package.  
Audio mixing: The WM9715L handles all the audio functions of a smartphone, including  
audio playback, voice recording, phone calls, phone call recording, ring tones, as well as  
simultaneous use of these features. The AC’97 mixer architecture does not fully support  
this. The WM9715L therefore uses a modified AC’97 mixer architecture with three  
separate mixers.  
Tone Control, Bass Boost and 3D Enhancement: These functions are implemented in  
the digital domain and therefore affect only signals being played through the audio  
DACs, not all output signals as stipulated in AC’97.  
Some other functions are additional to AC’97:  
On-chip BTL loudspeaker driver  
On-chip BTL driver for ear speaker (phone receiver)  
Auxiliary mono DAC for ring tones, system alerts etc.  
Touchpanel controller  
Auxiliary ADC Inputs  
2 Analogue Comparators for Battery Alarm  
Programmable Filter Characteristics for Tone Control and 3D Enhancement  
PD Rev 4.0 December 2007  
13  
w