WM9705
Production Data
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
48 PIN QFN
DVDD1
XTLIN
XTLOUT
DGND1
SDATAOUT
BITCLK
DGND2
SDATAIN
DVDD2
SYNC
RESETB
PCBEEP
PHONE
X+/AUXL
X-/AUXR
Y+/VIDL
Y-/VIDR
CDL
CDGND
CDR
MIC1
MIC2
LINEINL
LINEINR
AVDD1
AGND1
VREF
VREFOUT
PDRES
AUXADC
BMON
CAP2
CX3D1
CX3D2
LINEOUTL
LINEOUTR
MONOOUT
AVDD2
HPOUTL
HPGND
HPOUTR
AGND2
MASK/LRC
SPEN/I S
CID0
PENDET
EAPD/BUSY
SPDIF
2
48 PIN TQFP
DVDD1
XTLIN
XTLOUT
DGND1
SDATAOUT
BITCLK
DGND2
SDATAIN
DVDD2
SYNC
RESETB
PCBEEP
PHONE
X+/AUXL
X-/AUXR
Y+/VIDL
Y-/VIDR
CDL
CDGND
CDR
MIC1
MIC2
LINEINL
LINEINR
AVDD1
AGND1
VREF
VREFOUT
PDRES
AUXADC
BMON
CAP2
CX3D1
CX3D2
LINEOUTL
LINEOUTR
MONOOUT
AVDD2
HPOUTL
HPGND
HPOUTR
AGND2
MASK/LRC
SPEN/I S
CID0
PENDET
EAPD/BUSY
SPDIF
2
TYPE
Supply
Digital input
Digital output
Supply
Digital input
Digital output
Digital input
Supply
Digital output
Supply
Digital input
Digital input
Analogue input
Analogue input
Analogue I/O
Analogue I/O
Analogue I/O
Analogue I/O
Analogue input
Analogue input
Analogue input
Analogue input
Analogue input
Analogue input
Analogue input
Supply
Supply
Analogue output
Analogue output
Analogue input
Analogue input
Analogue input
Analogue I/O
Analogue output
Analogue input
Analogue output
Analogue output
Analogue output
Supply
Analogue output
Supply
Analogue output
Supply
Digital bidir
Digital bidir
Digital input
Digital output
Digital output
Digital output
Digital positive supply
DESCRIPTION
Clock crystal connection or clock input (XTAL not used)
Clock crystal connection
Digital ground supply
Serial data input
Serial interface clock output to AC’97 controller
or input from AC'97 primary codec
Digital ground supply
Serial data output to AC’97 controller
Digital positive supply
Serial interface sync pulse from AC’97 controller
NOT reset input (active low, resets registers)
Mixer input, typically for PCBEEP signal (also input to AUX ADC)
PHONE input (also input to AUX ADC)
Pen X+ channel screen driver/input. (or AUXL mixer input)
Pen X- channel screen driver/input (or AUXR mixer input)
Pen Y+ channel screen driver/input (or VIDL mixer input)
Pen Y- channel screen driver/input (or VIDR mixer input)
Mixer input, typically for CD signal
CD input common mode reference (ground)
Mixer input, typically for CD signal
Mixer input with extra gain if required – also HSET detect input
Mixer input with extra gain if required
Mixer input, typically for LINE signal
Mixer input, typically for LINE signal
Analogue positive supply for screen drivers
Analogue ground supply for screen drivers
Internal reference (buffered CAP2)
Reference for microphones (buffered CAP2)
Pen Down Detect Pull-up external resistor connection
AUX signal input to digitiser ADC
Battery input to ADC
Reference input/output; pulls to midrail if not overdriven
Output pin for 3D difference signal
Input pin for 3D difference signal
Main analogue output for left channel
Main analogue output for right channel
Main mono output
Analogue positive supply
Left channel line level output (or headphone, or headset mic input)
Headphone ground supply
Right channel line level output (or headphone)
Analogue ground supply
MASK input signal to delay PEN conversions (or LRCLK output)
SPDIF hardware enable pin and I
2
S data output
Primary/Secondary ID select (internal pull-up) Hi = Primary
Pen Down Detection flag OR Headset detect output
External amplifier powerdown or BUSY output flag from Pen ADC
S/PDIF output
w
PD Rev 4.0 December 2003
7
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
