參數(shù)資料
型號： WM9712LSEFV
廠商： Wolfson Microelectronics
元件分類： Codec
英文描述： AC97 Audio and Touchpanel CODEC
中文描述： AC97音頻編解碼器和觸摸屏
文件頁數(shù)： 13/78頁
文件大?。?/td> 689K
代理商： WM9712LSEFV
Production Data
WM9712L
w
PD Rev 4.0 December 2003
13
DEVICE DESCRIPTION
INTRODUCTION
The WM9712L 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 GPIO functions, all controlled through a single 5-wire AC-Link interface.
SOFTWARE SUPPORT
The basic audio features of the WM9712L 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 WM9712L uses an AC’97 interface to communicate with a microprocessor or controller. The
audio and GPIO 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 WM9712L is a 7
×
7mm leadless QFN package.
However, it may also be supplied in a 48-pin TQFP package, as specified in the AC’97
standard.
Audio mixing: The WM9712L 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 WM9712L 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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
WM9713 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC 97 AUDIO + TOUCHPANEL CODEC
WM9713-6123-FL48-M 功能描述:接口—CODEC WM9713EVM MINI EVAL RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
WM9713-6123-FL48-M-S 功能描述:接口—CODEC WM9713EVM FULL EVAL SYSTEM RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
WM9713CLGEFL/RV 功能描述:接口—CODEC Stereo AC’97 CODEC, T/P INTERFACE RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
WM9713CLGEFL/V 功能描述:接口—CODEC Stereo AC’97 CODEC, T/P INTERFACE RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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