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參數資料
| 型號： | WM9712L |
| 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： | 1/78頁 |
| 文件大小： | 689K |
| 代理商： | WM9712L |
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WM9712L
AC’97 Audio and Touchpanel CODEC
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, December 2003, Rev 4.0
Copyright
2003 Wolfson Microelectronics plc.
DESCRIPTION
The WM9712L is a highly integrated input / output device
designed for mobile computing and communications. The
device can connect directly to a 4-wire or 5-wire touchpanel,
mono or stereo microphones, stereo headphones and a
mono speaker, reducing total component count in the
system. Additionally, phone input and output pins are
provided
for
seamless
communication devices.
integration
with
wireless
The WM9712L also offers up to four auxiliary ADC inputs
for analogue measurements such as temperature or light,
and five GPIO pins for interfacing to buttons or other digital
devices. To monitor the battery voltage in portable systems,
the WM9712L has two uncommitted comparator inputs.
All device functions are accessed and controlled through a
single AC-Link interface compliant with the AC’97 standard.
Additionally, the WM9712L can generate interrupts to
indicate pen down, pen up, availability of touchpanel data,
low battery, dead battery, and GPIO conditions.
The WM9712L 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, or in the industry standard 48-pin
TQFP package.
FEATURES
AC’97 Rev 2.2 compatible stereo codec
- DAC SNR 94dB, THD –87dB
- ADC SNR 92dB, THD –87dB
- Variable Rate Audio, supports all WinCE sample rates
- Tone Control, Bass Boost and 3D Enhancement
On-chip 45mW headphone driver
On-chip 400mW mono speaker driver
Stereo, mono or differential microphone input
- Automatic Level Control (ALC)
Auxiliary mono DAC (ring tone or DC level generation)
Seamless interface to wireless chipset
Resistive touchpanel interface
- 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
Up to 5 GPIO pins
2 comparator inputs for battery monitoring
Up to 4 auxiliary ADC inputs
1.8V to 3.6V supplies
7x7mm QFN or 48-pin TQFP package options
APPLICATIONS
Personal Digital Assistants (PDA)
Smartphones
Handheld and Tablet Computers
BLOCK DIAGRAM
相關PDF資料 |
PDF描述 |
|---|---|
| WM9712LEFL | AC97 Audio and Touchpanel CODEC |
| WM9712LEFT | AC97 Audio and Touchpanel CODEC |
| WM9712LEFV | AC97 Audio and Touchpanel CODEC |
| WM9712LSEFL | AC97 Audio and Touchpanel CODEC |
| WM9712LSEFT | AC97 Audio and Touchpanel CODEC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM9712L_11 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:ACa??97 Audio and Touchpanel CODEC |
| WM9712LEFL | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio and Touchpanel CODEC |
| WM9712LEFL/RV | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio and Touchpanel CODEC |
| WM9712LEFL/V | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio and Touchpanel CODEC |
| WM9712LEFT | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio and Touchpanel CODEC |
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