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EN 32
7.
TPM7.1E LA
7.4.8
Audio Amplifier
2
The platform uses I
S to link the audio amplifier IC, it is using
pins 27, 28, 29 and 30 of IC U601.
AUD_V33
C612
C612
100N 16V
100N 16V
PWRDN
VDD_PLL
PLL_FILTER
PLL_GND
XTI
BICKI
LRCLKI
SDI
AMP_RESET
R611
R611
0R05 1/16W
0R05 1/16W
SMD/0402
SMD/0402
R615 100R 1/16W 5%
R615 100R 1/16W 5%
OSDA0
SMD/0402
OSCL0
R616 100R 1/16W 5%
R616 100R 1/16W 5%
AUD_V33
7.4.9
Mute circuit
It is DC drop detect circuit. Check +5VSB, if it is dropped, the
OFF_MUTE/PWRDN will send out a "high" pulse to turn on the
related mute circuit.
10K 1/16W 5%
10K 1/16W 5%
SMD/0402
AMP_MUTE
+12V
+5V_STB
R629
R629
R630
R630
NC/0R05 1/10W 5%
NC/0R05 1/10W 5%
0R05 1/10W
0R05 1/10W
D601
D601
1
A
BAS316
BAS316
R633
R633
4.7K1/16W
4.7K1/16W
SMD/0402
2
1
K
A
D604
D604
BAS316
BAS316
Figure 7-12 Mute circuit
2011-Aug-19
Circuit Descriptions
I2S AUDIO AMP
19
EAPD/OUT4B
20
TWARN/OUT4A
21
VDD_DIG
22
GND_DIG
23
PWRDN
24
VDD_PLL
25
FILTER_PLL
26
GND_PLL
27
XTI
28
BICKI
29
LRCKI
30
SDI
31
RESET
32
INT_LINE
33
SDA
34
SCL
35
GND_DIG
36
VDD_DIG
37
Thermal Pad
A_ONSEL
STA339BWTR
STA339BWTR
A_GAIN
C635
C635
100N 16V
100N 16V
SMD/0402
Figure 7-11 Audio Amplifier
DV33
R619
R619
10K 1/16W 5%
10K 1/16W 5%
SMD/0402
DV33SB
PWRDN
R620
R620
R622
R622
Q601
Q601
BC847BW
BC847BW
22K 1/16W 5%
22K 1/16W 5%
SMD/0402
R624
R624
4.7K1/16W
4.7K1/16W
SMD/0402
D602
D602
BAS316
BAS316
D603
D603
OFF_MUTE
1
2
A
K
BAS316
BAS316
2
K
C649
C649
220UF 16V
220UF 16V
+
+
BC857BW
BC857BW
1
Q603
Q603
R634
R634
1K 1/16W 5%
1K 1/16W 5%
SMD/0402
R637
R637
100K1/16W
100K1/16W
SMD/0402
19090_216_110422.eps
U601
U601
18
OUT3A
17
OUT3B
C619
C619
16
CONFIG
100N 50V
100N 50V
15
VDD
14
GND_REG
13
OUT1A
12
GND1
AUD_VCC
11
VCC1
10
OUT1B
9
OUT2A
AUD_VCC
8
VCC2
7
GND2
6
OUT2B
C623
C623
5
VCC_REG
100N 50V
100N 50V
4
VSS
3
TEST_MODE
2
SA
1
GND_SUB
7.4.10 ARC (HDMI)
ARC (audio return channel) is supported on HDMI 1 only.
When an ARC command is received from CEC, then IC U502
will be enabled and an SPDIF signal will be available on
HDMI 1, pin 14.
ARC_GPIO
100R 1/16W 5%
100R 1/16W 5%
SMD/0402
NC/10K 1/16W 5%
NC/10K 1/16W 5%
SMD/0402
M_SPDIF_Out
110422
L601
L601
47UH
47UH
C608 100N 16V
C608 100N 16V
R602
R602
22 OHM 1/4W
22 OHM 1/4W
SMD/0402
C610
C610
C614
C614
100N 16V
100N 16V
330PF 50V
330PF 50V
SMD/0402
SMD/0402
L602
L602
47UH
47UH
C617 100N 16V
C617 100N 16V
SMD/0402
OUT1A
C622
C622
100N 16V
100N 16V
OUT1B
SMD/0402
L603
L603
OUT2A
OUT2B
47UH
47UH
C625 100N 16V
C625 100N 16V
R607
R607
22 OHM 1/4W
22 OHM 1/4W
SMD/0402
C626
C626
C629
C629
100N 16V
100N 16V
330PF 50V
330PF 50V
SMD/0402
SMD/0402
L604
L604
47UH
47UH
C634 100N 16V
C634 100N 16V
SMD/0402
C636
C636
100N 16V
100N 16V
SMD/0402
R543
R543
ARC
R544
R544
R546
R546
NC/5K1 1/16W 5%
NC/5K1 1/16W 5%
AVDD33_HDMI
SMD/0402
U502
U502
1
5
OE
VCC
2
R538
R538
A
3
4
GND
Y
180OHM 1/10W
180OHM 1/10W
SN74LVC1G125DBVR
SN74LVC1G125DBVR
Figure 7-13 ARC (HDMI)
19090_215_110422.eps
110422
C503
C503
ARC_HDMI
1UF16V
1UF16V
R545
R545
R542
R542
82R 1/10W 5%
82R 1/10W 5%
100K 1/10W 5%
100K 1/10W 5%
19090_217_110422.eps
110422
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