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WM9705SEFL/RV 参数 Datasheet PDF下载

WM9705SEFL/RV图片预览
型号: WM9705SEFL/RV
PDF下载: 下载PDF文件 查看货源
内容描述: 多媒体AC97编解码器,集成了触摸屏控制器 [Multimedia AC97 CODEC with Integrated Touch Screen Controller]
分类和应用: 解码器编解码器控制器
文件页数/大小: 55 页 / 498 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM9705
Multimedia AC’97 CODEC with
Integrated Touch Screen Controller
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
2
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
DGND1
DVDD1
DGND2
DVDD2
CX3D1 CX3D2
HPGND
HPVDD
LINEINVOL (Reg 10h)
CDVOL (Reg 12h)
MICVOL (Reg 0Eh)
MUX
ADCNDAC
(Reg 5Ch)
HPVOL
(Reg 04h)
M
U
X
16 / 32Ohm
headphone
HPOUTL
HPOUTR
HPGND
3D
MPM
(Reg 5Ah)
VID
MIXVOL
(Reg 72h)
AUX
HPND
(Reg 5Ch)
LINEINL
LINEINR
CDL
CDGND
CDR
MIC2
MIC1
PHONE
M
U
X
RECORD
GAIN
(Reg 1Ch)
ADC
L
DIGITAL
FILTERS
Σ∆
MODULATION
DAC
L
MIC BOOST
MIC SELECT
(Reg 0Eh)
(Reg 20h) M
0/20
U
dB
X
M
U
X headset autodetect
HPOUTL
PHONE
VID
AUX
RECORD
SELECT
(Reg 1Ah)
ADC
R
VARIABLE
RATE AUDIO
DAC
R
DACVOL
(Reg 18h)
LINEOUTL
LINEOUTR
POP
(Reg 20h)
MASTER VOL
(Reg 02h)
MIX
(Reg 20h)
W
PCBEEP
ADCSEL
(Reg 0Ah)
(Reg 0Ch)
M
U
X
AUXADC
BMON
SAR
ADC
WM9705
PSEL
(Reg 5Ch)
M
U
X
MONO VOL
(Reg 06h)
MONO_OUT
(TX)
PEN DOWN
TOUCH PANEL
SWITCH MATRIX
CONTROL LOGIC
VID
AUX
AC'97
INTERFACE
VREF
VREFOUT
CLOCK
OSC
X+/AUXL
XTLOUT
X-/AUXR
Y+/VIDL
Y-/VIDR
PDRES
AVDD1
AGND1
XTLIN
PENDET
EAPD/BUSY
MASK/LRC
SPEN/I2S
SPDIF
CID
BITCLK
SYNC
SDATAIN
SDATAOUT
RESETB
PCBEEP
PHONE
(RX)
24.576MHz
4-wire resistive
touchpanel
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, December 2003, Rev 4.0
Copyright
2003
Wolfson Microelectronics plc
AGND2
VREF
AVDD2
CAP2