wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 71

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

Production Data
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APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
Figure 23 External Components Diagram
Layout Notes:
1. C1 to C6, C9 C11 and C13 should be as close to
2. AGND and DGND should be connected as close
3. For added strength and heat dissipation, it is recommended
the relative WM9712L connecting pin as possible.
to the WM9712L as possible.
that the GND_PADDLE(Pin 49) is connected to AGND.
AVDD
AGND
+
C7
DVDD
GND
+
GND
C8
AC-LINK
C1
DVDD
C2
AVDD
C3
AGND
C4
C5
C15
C16
C17
C18
C19
C20
C6
20
13
25
38
43
10
11
14
15
16
17
19
21
22
23
24
29
30
31
12
1
9
5
6
8
DBVDD
DCVDD
AVDD2
AVDD
SPKVDD
HPVDD
SDATAOUT
BITCLK
SDATAIN
SYNC
RESETB
X+/BR
Y+/TR
X-/TL
Y-/BL
PCBEEP
PHONE
MIC1
MIC2
LINEINL
LINEINR
COMP1
COMP2
COMP3
CREF
C27
XTLIN
WM9712L
2
GND
XT
GPIO/SPDIF_OUT
XTLOUT
GND_PADDLE
3
MONOOUT
GPIO2/IRQ
C28
SPKGND
HPOUTR
MICBIAS
HPOUTL
HPGND
DGND1
DGND2
AGND1
AGND2
ROUT2
LOUT2
GPIO3
GPIO1
GPIO4
AGND
OUT3
VREF
CAP2
49
4
7
18
26
34
40
42
33
35
36
37
39
41
44
45
46
47
48
28
27
32
C9
+
+
+
+
+
+
C21
C22
C23
C24
C25
C26
AGND
+
AGND
AGND
C10
GND
GND
DBVDD
PD Rev 4.5 August 2006
GND
C11
See External Components
Descriptions for details
R1
R2
+
C12
One of the three possible
configurations MUST be used:
R1 - Default power down.
R2 - Default power on & GPIO
function used.
GND - Default power on &
GPIO function not used.
WM9712L
AGND
C13
+
C14
71