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參數資料
| 型號： | WM9705 |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | Multimedia AC97 CODEC with Integrated Touch Screen Controller |
| 中文描述： | 多媒體AC\u0026#39;97音效集成觸摸屏控制器 |
| 文件頁數： | 1/55頁 |
| 文件大?。?/td> | 496K |
| 代理商： | WM9705 |
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WM9705
Multimedia AC’97 CODEC with
Integrated Touch Screen Controller
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, December 2003, Rev 4.0
Copyright
2003 Wolfson Microelectronics plc
DESCRIPTION
The WM9705 is a high-quality stereo audio codec with an
integrated touch screen controller.
The audio section 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 8 to 48k samples/s with
high signal to noise ratio. Optional AC’97 features include 3D
sound enhancement, line-level outputs, stereo buffered
headphone
outputs, hardware sample rate conversion,
primary/secondary mode operation and S/PDIF output.
Headphone auto-detect, I
S output and headphone buffer on the
mono output are included.
Additionally, the WM9705 integrates a complete 4-wire touch
screen controller, including on-chip screen drivers, pen-down
detection feature, and pressure measurement capability.
A 5-pin digital bi-directional AC-Link serial interface allows
transfer of control data and DAC and ADC words to and from
the AC’97 controller. The WM9705 is fully operable on 3V or 5V
or mixed 3/5V supplies, and is packaged in the industry
standard 48-pin TQFP package with 7mm body size, or in a
smaller 7
×
7
×
0.9mm QFN.
FEATURES
AC’97 rev2.2 compliant codec with pen digitiser
18-bit stereo audio codecs
On-chip sample rate conversion
Multiple channel input mixer
S/PDIF digital audio output
Headphone drivers on AUX and MONO outputs
4-wire touch screen interface with co-ordinate and
pressure measurement, and pen-down detection
Wake-up from sleep mode on pen down
3V to 5V operation
Extensive power management features including hardware
power down option
Standard AC’97 pinout in 48-pin TQFP package or 48-pin
QFN package.
APPLICATIONS
Personal Digital Assistants and ‘Smartphones’
PocketPC systems
BLOCK DIAGRAM
W
WM9705
DVDD1
DGND1
DAC
L
HPGND
HPVDD
HPGND
DAC
R
S
S
B
R
S
DIGITAL
FILTERS
Σ
MODULATION
VARIABLE
RATE AUDIO
Y
X
X
Y
PEN DOWN
AUXADC
TOUCH PANEL
SWITCH MATRIX
X
X
4-wire resistive
touchpanel
16 / 32Ohm
headphone
ADCSEL
CLOCK
OSC
HPOUTL
HPOUTR
VREFOUT
V
A
A
C
DACVOL
(Reg 18h)
P
HPVOL
(Reg 04h)
LINEINVOL (Reg 10h)
MICVOL (Reg 0Eh)
RECORD
GAIN
(Reg 1Ch)
VREF
RECORD
SELECT
(Reg 1Ah)
LINEOUTL
LINEOUTR
MASTER VOL
(Reg 02h)
AUX
VID
CONTROL LOGIC
P
S
C
E
S
M
SAR
ADC
AC'97
INTERFACE
0/20
dB
MIC BOOST
(Reg 0Eh)
M
U
X
VID
AUX
MIC2
MIC1
M
U
X
M
U
X
HPOUTL
headset autodetect
CDR
CDL
LINEINR
LINEINL
CDGND
MIC SELECT
(Reg 20h)
ADC
R
ADC
L
VID
AUX
P
PCBEEP
POP
(Reg 20h)
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
PHONE
(Reg 0Ah)
(Reg 0Ch)
MUX
ADCNDAC
(Reg 5Ch)
CDVOL (Reg 12h)
DVDD2
DGND2
BMON
24.576MHz
A
A
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| WM9709 | AC LINK INTERFACE AUDIO DAC |
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| WM9710 | AC97 Audio CODEC and Mixer with Integrated Headphone Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM9705_06 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Multimedia AC’97 CODEC with Integrated Touch Screen Controller |
| WM9705CSEFL/V | 制造商:Wolfson Microelectronics 功能描述:3-5 V 18 Bit Serial Interface CODEC w/ Touchpanel Controller - QFN-48 |
| WM9705SEFL/RV | 功能描述:接口—CODEC STR AC’97 CODEC T/P Interface 48-pin RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| WM9705SEFL/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: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| WM9705SEFT/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: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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