WM8802
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RECOMMENDED EXTERNAL COMPONENTS
Microcontroller
Cl
Cl
24.576 MHz / 12.288 MHz
Rd
Cc
Rf
DVDD
Cc
Rp
Rp
Rp
Rp
Chip address setting
Chip address setting
Demodulation function
master/slave setting
Modulation/general-purpose
I/O function selection
36 35 34 33 32 31 30 29 28 27 26 25
37
24
23
SDIN
DO
SLRCK
DI 38
CE
Microcontroller
Analogue to Digital
39
22 SBCK
CL 40
RDATA
RLRCK
21
20
XMODE 41
DVDD
DVDD
DGND
19
18
DGND 42
DVDD 43
Cc
Cc
WM8802
DVDD
RBCK
RMCK
17
16
TMCK/GPIO0
44
45
46
Digital to Analogue
TBCK/GPIO1
TLRCK/GPIO2
Analogue to Digital
AGND
15
Digital Signal Processing
Cc
TDATA/GPIO3 47
TXO/GPIOEN 48
14
AVDD
AVDD
13 LPF
R0
C0
1
2
3
4
5
6
7
8
9
10 11 12
C1
Coaxial Input
DVDD DVDD
Optical Input
Ci
Cc
Cc
Ri
Figure 34 External Component Diagram
SAMPLE APPLICATION
A de-coupling capacitor (0.1 µF) should be connected as close as possible to the power supply pin.
Use a ceramic capacitor with high-frequency characteristics..
A capacitor with a low temperature coefficient should be used for the PLL loop filter.
PP Rev 1.1 April 2004
62
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
