Circuit Descriptions
7.
7.4.6
Audio Amplifier (U602)
The platform use I
2
S to link audio amplifier IC.
Figure 7-9 Audio Amplifier (U602)
7.4.7
Tuner power
G9084TU3U provides the tuner power of approximately 5 V.
Figure 7-10 Tuner power
19170_214_110705.eps
110705
+
C685
100UF 35V
OUT1A
DDX3A
OUT2B
OUT2A
OUT1B
DDX3B
+
C631
100UF 35V
PLL_FILT
Aud3A3
PWDN
AOLRCK
AOSDATA0
C621
0.1uF 50V
Aud3V3
AOMCLK
A_Reset
AOBCLK
R630
2R2 1/16W 5%
Aud3V3
TP45
TW
C639
0.1uF 50V
EAPD
R629
0R05 1/16W
C645
0.1uF 50V
C644
0.1uF 50V
C642
0.1uF 50V
1
2
FB609
120R/6000mA
+24V_AMP
C623
0.1uF 50V
C643
0.1uF 50V
C622
0.1uF 50V
+
C630
100UF 35V
GND_SUB
1
SA
2
TEST_MODE
3
VSS
4
VCC_REG
5
OUT2B
6
GND2
7
VCC2
8
OUT2A
9
OUT1B
10
VCC1
11
GND1
12
OUT1A
13
GND_REG
14
VDD
15
CONFIG
16
OUT3B
17
OUT3A
18
EAPD/OUT4B
19
TWARN/OUT4A
20
VDD_DIG
21
GND_DIG
22
PWRDN
23
VDD_PLL
24
FILTER_PLL
25
GND_PLL
26
XTI
27
BICKI
28
LRCKI
29
SDI
30
RESET
31
INT_LINE
32
SDA
33
SCL
34
GND_DIG
35
VDD_DIG
36
Thermal Pad
37
U602
STA339BWTR
C641
1U 50V
C625
1U 50V
PLL_GND
Aud_SCL
Aud_SDA
19170_210_110705.eps
110705
1
2
L1102
NC\22uH
5V_SW
+B_5V
5V_TUNER
C1140
10U 10V
+
C1139
220UF 16V
R1171
15 OHM +-5% 1/4W
R1172
15 OHM +-5% 1/4W
+12V
VIN
3
VOUT
2
GN
D
1
U7007
+B_5V
C1163
330N 25V
R1176
0R05 1/4W
5V_TUNER
R1173
1K 1/10W 1%
R1174
3K 1/10W 1%
C1162
100N 16V
C1141
100N 16V
C1144
100N 16V
1
2
FB1102
120R/3000mA
G9084TU3U
TO-263T
C1164
0.
1U
F
50V
R1175
15 OHM +-5% 1/4W