Main Board -- Circuit Diagram
7
-1
7
-1
OPTICAL
1
2
3
JK1
DQT(R)-021
C28
NC
C30
10u
CB2
104
MCU_3.3V
R19
0
R18
10
3
1
2
Q1
WPM3407
MCU_5V
A5V
R2
4K7
R1
10K
V_OPTICAL
CE2
100u/10V
R3
4K7
1
2
CN1
2.5/2P/RED
VCC
L1
FB/DIP-50
C1
104
1
2
3
4
5
6
7
8
9
10
CN3
1.5/10P
VDD
IR
LED2/CS
LED3/CLK
LED4/DATA
ADKEY1
GND
1
2
JK2
NC
GND
COA_SPDIF
SPDIF
VCC2
94V0
标志
CE3
100u/10V
CB1
104
CE1
100uF/35V
C21 NC
C22 NC AUX_LIN
AUX_RIN
1
2
3
4
5
6
USB1
USB
C91
NC
MCU_5V
C92
NC
USB&MCU Upgrade
R25
NC
C29
NC
C6 NC
C7
NC
COA_SPDIF
Display&IR&KEY
COAXIAL
OPTICAL
POWER
DC_DC
AUX-LIN
AUX-RIN R81
NC
R82
NC
R83
NC
R84
NC
C96
NC
C95
NC
R86 NC
LED1
LED5
C
106
100P
C
99
104
C
100
104
C
104
100P
C
105
104
VD
D
IR
LE
D
4/
D
AT
A
AD
KE
Y1
LE
D
5
AUX
C
5
104
C
11
100P
C
12
100P
LE
D
1
LED
2/C
S
LED
3/C
LK
COAXIAL
R7
10K 1%
R6
45.3K 1%
VCC
MCU_5V
CE4
470u/10V
C16
104
L2
10uH/2.5A
C9
103
R4
100K
C15
103
C107
332
BS
1
IN
2
SW
3
GND
4
FB
5
COMP
6
EN
7
SS
8
GND
9
U2
IC-EUP3482
C32
104
R108
2.2K
Vout=0.92*(R6+R7)/R7
R109
NC
无铅标志
2
AUX0R/PA2
30
SD
_D
AT
/P
B0
/P
B5
48
PC
2S
PI
_D
AT
/T
X0
18
U
SB
DP
24
PA1
4/MS
C
L
21
BT_AVDD
10
RTCVDD
4
U
SB
DM
23
AD5/CEC/PA10
26
LDO_IN
2
IR/PA11
25
MIC/PB13
32
VDDIO
3
BT_RF
11
AUX1R/AD1/PWM1/PA4
28
PC
4/
SP
I_
C
S
16
BT
_OS
C
I
13
OSC32KI
8
AUX0L/PWM0/PA1
31
PC
0/T
X1
22
AUX1L/AD0/PA3
29
FM
IP
39
DACL
34
DACR
33
PC
3/
SP
I_
C
LK
/R
X0
17
FMVDD
40
AVSS
12
VSSIO
1
FM
VS
S
38
DACVDD
35
PR0/OSC32KO
9
PC
1/
R
X1
19
AD4/PA9
27
12
M
/S
D
_C
M
D
/P
B1
/P
B6
47
PC
5
15
AD
8/
TX
2/
D
BG
/P
B9
44
AUX
2R
/A
D
11
/P
B1
2
41
AUX
2L
/A
D
10
/P
B1
1
42
AD
6/
SD
_C
LK
/P
B2
/P
B7
46
PR2/ADC13
6
PR3
7
BT
_OS
C
O
14
PA1
5/MS
DA
20
VCOM
36
AD
7/
PW
M
2/
PB
8
45
AD
9/
R
X2
/P
B1
0
43
D
AC
VS
S
37
PR1/ADC12
5
U3
AC6901AN
C44
10u
C45
10u
C46
10u
C31 10u
C37
6.8P L3
NC
ANT1
BT_ANT
BT_AVDD
BT_RF
GND
Y2 24MHz
R
48
15
R
49
15
U
SB
D
M
U
SB
D
P
ADKEY1
DACR
DACL
C49
10u
C50
10u
MCU6_5V
MCU_3.3V
IR
AUX_LIN
AUX_RIN
R
35
100
R
36
100
M
SC
L
M
SD
A
MCU_3.3V
R51
4K7
MSCL
MSDA
R52
4K7
C67
100P
C68
100P
R29
10K*
ADKEY1
D
BG
C47
10u
R28
10K
IR
L9
FB/1K
R13
FB/1K
R12
FB/1K
MCU_CEC
HDMI_DET
LED
2/C
S
LED
3/C
LK
LE
D
4/
D
AT
A
R
21
FB
/1K
R
23
FB
/1K
R
26
FB
/1K
R
10
FB
/1K
LE
D
1
R
11
FB
/1K
LE
D
5
L5
FB/1K
EC
O
POW
ER
/MU
TE_5825
OSCI
O
SC
O
Y1
NC
OSC32KI
OSC32KO
C38 NC
C43 NC
L8
FB/1K
I2C_ON
L7
FB
/1K
R8
0.47
MCU_5V
C17
47
MCU_5V
USB_5V
R53
11K*
R5 4K7
IN
5
ISET
3
EN
4
GND
2
OUT
1
U6
WS4603E
USB_5V
C14
104
C36
10u
USBDM
C13
104
USBDP
C35
10u
ECO POWER
Q6
3904
R47
4K7
R54
0
R55
NC MCU_5V
MCU_3.3V
A1.25V
A3.3V
VIN
1
GND
2
EN
3
NC
4
VOUT
5
U4
IA6006-ADJ
CB4
1u
C66
10u
HD_SPDIF
C10
104
R91
4K7*
R92
8.2K*
2A
3
GND
2
1A
1
1Y
6
2Y
4
VCC
5
U8
74LVC2GU04
R71 1K
C2
104
C33 47
L11
FB/600A3.3V
R72
47K
C62
10u
SPDIF_IN
R78
1K
R32
100
SPDIF_IN1
SPDIF_IN1
B2
1
GND
2
B1
3
A
4
Vcc
5
S
6
U5
NC
SW_DET
L6
NC
C48
NC
A3.3V
C34 103
R27
0
R30
0
R31 NC
COAXIAL
U
AR
T_T
X
U
AR
T_R
X
R
ST
_8109
R93
1K
A5V
A3.3V
C
E
1
GND
2
NC
3
VI
N
4
VOUT
5
U1
IA6003-3.3V
5
4
3
2
1
6
JK4
NC
GND
CE6
470u/10V
G
PI
O6
1
GND
2
G
PI
O7
3
I2
S_
IN_
D0
4
I2
S_
IN_
BC
K
5
I2
S_
IN_
M
C
LK
6
I2
S_
IN_
LR
C
K
7
HDMI
_C
EC
8
VDD1
2
9
VDD3
3
10
TM
D
ST
X_
AVS
S
11
TXC
N
12
TXC
P
13
TM
DST
X_
AVDD1
2
14
TXDN0
15
TXDP
0
16
TXDN1
17
TXDP
1
18
TXDN2
19
HE
AC
-
21
HE
AC
+
22
USB_DM
23
USB_DP
24
USB_AVDD
25
SAR10B_ADI2
26
SAR10B_ADI1
27
PLLA_3V3
28
TXDP
2
20
SD_D0
70
SD_CLK
71
SD_CMD
72
CARD_SENSE
69
AOUT
_L
45
ADA
C
_V
SS
46
I2
S_
OU
T_
MC
K
51
I2
S_
OU
T_
LR
C
K
50
SPD
IF
_O
U
T
49
AUDI
O_
MUT
E
48
ADAC
_AVDD3
3
47
AOUT_R
44
VREF
43
PLL_VDD12
31
CLKIN
30
CLKOUT
29
IR_IN
82
VDD12
83
UART0_TX
73
UART0_RX
74
VFD_CLK
79
VFD_STB
80
SPI_CE
75
SPI_DI/D1
76
SPI_CLK
77
SPI_DO/D0
78
SPDIF_IN1
68
SPDIF_IN2
67
G
PI
O3
1
66
UAR
T2
_R
TS
65
AADC_VSS
42
AADC_AVDD33
41
MIC_BIAS
40
MIC_IN
39
AIN_L0
38
AIN_R0
37
AIN_L1
36
AIN_R1
35
EPAD
89
VFD_DAT
81
POWER_KEY
84
GPIO62
85
SPDIF_IN0
86
UART1_TX
87
UART1_RX
88
RESET_B
34
I2C1_SCL/GPIO_88
32
I2C1_SDA/GPIO_89
33
VDD1
2
52
I2
S_
OU
T_
D
2
56
I2
S_
OU
T_
D
1
55
I2
S_
OU
T_
D
0
54
I2
S_
OU
T_
BC
K
53
UAR
T2
_C
TS
64
UAR
T2
_R
X
63
UAR
T2
_T
X
62
G
PI
O2
2
61
G
PI
O2
1
60
G
PI
O2
0
59
G
PI
O1
9
58
G
PI
O1
8
57
U9
SPHE8109S
RST_8109
VCC33
C61
12P
C63
12P
R44
4K7
Y3 24.576MHz
VD
D
33
VD
D
12
CLKOUT
CLKIN
UART_TX
UART_RX
VDD33_USB
PLL_VDD33
I2S_IN
_D
AT
A
CLKOUT
CLKIN
/CS
1
SO
2
/WP
3
GND
4
SI
5
SCK
6
/HOLD
7
VDD
8
U7
W25Q16
SPI_CE
SPI_D0
SPI_CLK1
SPI_D1
CB8
104
A3.3V
VD
D
121
I2
S_
OU
T_
BC
K
I2S
_O
U
T_D
AT
A0
SPI_WP
SPI_HOLD
L13FB/600
R16
3.3K
R17
10K
R20
10K
R22
10K
VCC33
VCC33
SPI_CLK1
SPI_WP
SPI_HOLD
SPI_CE
I2S
_O
U
T_LR
C
K
A3.3V
R24
10K
R33
10K
R39
10K
R38
10K
UART_TX
UART_RX
UART0_TX
UART0_RX
UART0_TX
UART0_RX
VD
D
33_AD
AC
1
2
3
CN2
1.5/3P
UART0_TX
UART0_RX
GND
DBG&Upgrade
TX
2P
TX
2N
TX
1P
TX
1N
TX
0P
TX
0N
TX
C
P
TX
C
N
VDD121
SPI_D1
SPI_CLK1
SPI_D0
SPI_CE
R40
100
R41
100
R42
100
R43
100
R15
10K
OPTICAL
VREF
VDD33_AADC
MIC_BIAS
PLL_VDD12
R69
NC
C
58
N
C
A3.3V
C
57
N
C
R68
NC
C60
104
TX
_H
EA
C
-
TX
_H
EA
C
+
VD
D
12_T
MD
S
CB3
104
C75
10u
C79
10u
CB5
104
VREF
MIC_BIAS
C4
104
C27
10u
L16
FB/600
VDD33
C8
104
C41
10u
L17
FB/600
VDD33_USB
C18
104
C42
10u
L18
FB/600
VDD33_AADC
C19
104
C51
10u
L19
FB/600
VDD33_ADAC
A3.3V
L14
FB/600
C20
104
C52
10u
PLL_VDD33
A3.3V
A3.3V
A3.3V
A3.3V
L15
FB/600
C25
104
C53
10u
L22
FB/600
VDD12
C23
104
C69
1u
L20
FB/600
PLL_VDD12
A1.25V
C24
104
C70
1u
VDD12_TMDS
A1.25V
A1.25V
SPDIF_IN
R70
1K
L31
FB/1K
R45
56
R50
56
R
59
N
C
R
61
FB
/1K
R
62
FB
/1K
R
64
FB
/1K
SW_
D
ET
L23
FB/600
A1.25V
C81
10u
C82
104
VDD121
L26
FB
/1K
R87
FB/1K
R88
FB/1K
Q7
3904
R90
150K
OPTICAL
SW_DET
C87
104
D4
IN4148
R95
2.2K
C83
104
R96
NC
R97
FB/600
R
113
N
C
I2S
_O
U
T_D
AT
A1
R114
0
L35
56
C115 NC
C116 NC
OUT_L
OUT_R
I2S_IN
_BC
K
I2S_IN
_MC
LK
I2S_IN
_LR
C
K
ADKEY2
C
122
104
AD
KE
Y2
R119
10K*
ADKEY2
L38
FB/1KADKEY2
CE7
NC
L39
FB/600
L40
FB/600
L41
FB/600
L42
FB/600
L43
FB/600
I2S_IN
_D
AT
A
I2
S_
OU
T_B
C
K
I2S
_O
U
T_LR
C
K
L50
FB
/1K
L49
FB
/1K
L48
FB
/1K