Schematics
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2022/6/14 Sheet of
File: F:\ \..\SP-0314-66B+2018+4054.SchDoc Drawn By:
C15 104
R20
39K
R17
NC
SD
1
Bypass
2
AB/D
3
INN
4
VON
5
VDD
6
GND
7
VOP
8
0
U2 XA8870
C1 106
R4 NC
SP-
SP+
R8 4.7K
C16
473
MUTE
BAT
DACL
SP-0314 Schematic
VON
VOP
LED2 BLUE
H:MUTE
L:PLAY
BAT
C10 NC
C9
105
R3
1K
LED
VCC
BAT+
GND
C2
106
LED1 RED
0
VCC
1
DM
2
DP
3
ID
4
GND
5
0
USB1 PING
C6
106
R10
3.3K
mAH 300mA
Chrg
1
GND
2
BAT
3
VDD
4
Prog
5
U3 4054
R14 1K
R12
PTC
2
1
3
0
SW1
1P2T 3mm
VCC
BAT
R1
10K
R11
1K
R9
100K
R7
1K
LED EN
B
R
G
1
4
D3
5050 4PIN
B
R
G
1
4
D2
5050 4PIN
LEDPWM
B
R
G
1
4
D1
5050 4PIN
DB1
+1
-1
+4
DB4
-4
1
32
Q1
8050
1
2 3
Q2 2301
R2
100K
C19 NC
BAT
VLED
VLED
O
1
2
3
0
P3
3P1.25LT
1
2
0
P1
2P2.0
AB/DBAT
VCOM
2
DACL
3
DACR
4
PB7/SD0CLKF/AUX1R/ADC9
5
PB6/SD0CMDF/AUX1L/ADC8
6
PB4/SD0DATF/ADC7
7
LDO_IN/PB5
8
VBAT
9
VDDIO
10
BT_AVDD
11
PB3/SD0DATD/ADC6
12
PB2/SD0CMDD/SPI1DIA
13
PB1/SPI1DOA/ADC5
14
PB0/SD0CLKD/SPI1CLKA
15
FMIP
16
BT_RF
17
BT_OSCI
18
BT_OSCO
19
ADC12/SPI1DOB/SD0CLKA/PC5
20
ADC11/SPI1CLKB/SD0CMDA/PC4
21
SPI1DIB/SD0DATA/PC3
22
ADC10/PC2
23
ADC14/USBDM
24
ADC13/USBDP
25
ADC4/PA6
26
PA5
27
ADC3/AUX0R/SD0CMDC/PA4
28
ADC2/AUX0L/SD0DATC/PA3
29
MIC_BIAS/SD0CLKC/PA2
30
ADC1/MIC/PA1
31
ADC0/SD_PG/PA0
32
DACVSS
1
GND
0
U4
AC6966B
1
2
BTANT1
DM
DP
BT_ANT
OSCI
OSCO
DM
DP
C48
105
DACR
DACL
MIC
BT_AVDD
VCOM
L4
NC
C61 105
C62 105
BAT
ADKEY
C56
NC
AUXL
AUXR
12
3
4
Y3
LED
BATDET
12
3
4
Y1
24M
G
C63 105
VDDIO
SD_PWR
AUXDET
LED EN
C3 104
R13
39K
SD
1
Bypass
2
AB/D
3
INN
4
VON
5
VDD
6
GND
7
VOP
8
0
U1 XA8870
C4 106
SP-R
SP+R
R6 4.7K
C7
473
DACR
VONR
VOPR
BAT
C8 NC
C5
105
R5
NC
1
2
0
P2
2P2.0AB/D
SD
SD
1
2
0
BAT
2P2.0
C11
104
C12
104
LEDPWM
B
R
G
1
4
D4
5050 4PIN
+3
DB3
-3
1
1
1
2
1
3
1
4
MUTE
R15
NC