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參數資料
| 型號： | WM9710 |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
| 中文描述： | AC97音頻編解碼器和混頻器，集成耳機驅動器 |
| 文件頁數： | 1/32頁 |
| 文件大?。?/td> | 310K |
| 代理商： | WM9710 |
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WM9710
AC’97 Audio CODEC and Mixer with
Integrated Headphone Driver
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, December 2003, Rev 4.0
Copyright
2003 Wolfson Microelectronics plc
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,
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 I
2
S 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
W
WM9710
DVDD1
DGND1
DAC
L
HPGND
DAC
R
S
S
B
R
S
DIGITAL
FILTERS
Σ
MODULATION
VARIABLE
RATE AUDIO
X
X
16 / 32Ohm
headphone
CLOCK
OSC
HPOUTL
HPOUTR
DACVOL
(Reg 18h)
P
HPVOL
(Reg 04h)
LINEINVOL (Reg 10h)
MICVOL (Reg 0Eh)
RECORD
GAIN
(Reg 1Ch)
RECORD
SELECT
(Reg 1Ah)
LINEOUTL
LINEOUTR
MASTER VOL
(Reg 02h)
CONTROL LOGIC
S
C
E
S
P
0/20
dB
MIC BOOST
(Reg 0Eh)
M
U
X
MIC2
MIC1
M
U
X
M
U
X
HPOUTL
headset autodetect
CDR
CDL
LINEINR
LINEINL
CDGND
MIC SELECT
(Reg 20h)
ADC
R
ADC
L
MIXVOL
(Reg 72h)
CX3D1 CX3D2
M
(
M
U
X
HPND
(Reg 5Ch)
MONO VOL
(Reg 06h)
MONO_OUT
(TX)
M
U
X
M
U
X
MIX
(Reg 20h)
PSEL
(Reg 5Ch)
3D
P
(
PHONE
(Reg 0Ah)
(Reg 0Ch)
MUX
ADCNDAC
(Reg 5Ch)
CDVOL (Reg 12h)
DVDD2
DGND2
24.576MHz
VREFOUT
V
A
A
C
VREF
AC'97
INTERFACE
H
POP
(Reg 20h)
PHIZ
(Reg 78h)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| WM9710SEFL/RV | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
| WM9710SEFL/V | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
| WM9710SEFT/RV | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
| WM9710SEFT/V | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
| WM9711 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:LOW POWER AUDIO CODEC FOR PORTABLE APPLICATIONS |
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