Schematics

1
1
A A
KEY USB
TF LED
AUDIO
LIN
POWER
MIC
SD_CLK
SD_CMD
USBDM-SD-DAT
USBDP
MIC
AGND
VCOM
DACL
BT_OSCO
BT_OSCI
USBDM-SD-DAT
USBDM-SD-DAT
USBDP
VBAT
VBAT
SD_CLK
VBAT
DACL
SP+
VCC+5V
+3.3V
KEY1
DC-DET
KEY1
VBAT
MUTE
MUTE
DACL
GND
+3.3V
KEY2
KEY3 KEY2
VBAT
LED1
LED1LED2
LED2
+3.3V
USBDM-SD-DAT
USBDP
MIC
KEY1
TF3.3V
TF3.3V
SD_CMD
KEY3
SP-
VBAT
DC-DET
AGND
VCC+5V
S5
U4
LP4068B5F
1
2
3
5
4
CHRG
GND
BT
PROG
VCC
104
C11
R20
NC
U2 8002
1
2
3
4
8
7
6
5
MUTE
Bypass
IN+
IN-
OUT+
GND
VDD
OUT-
C3
2.7P
Y1 24MHz
R17
3.3K
U1
AC6965E
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PC5/SD0CLKA/ADC12
PC4/SD0CMDA/ADC11
USBDM/PC3/SD0DATA/ADC14
USBDP/ADC13
PA4/AUX0R/ADC3
PA3/AUX0L/ADC2
PA2/MIC_BIAS
PA1/MIC/ADC1
PA0/SD_PG/ADC0
DACVSS
VCOM
DACL
BT_OSCO
BT_OSCI
BT_RF
FMIP
VSSIO
ADC5/PB1
VDDIO
VBAT
PB5/LDO_IN
ADC7/SD0DATF/PB4
ADC8/AUX1L/SD0CMDF/PB6
ADC9/AUX1R/SD0CLKF/PB7
TF
SD-TF
10
9
1
2
3
4
5
6
7
8
11
CD
WP
D2
D3/CS
CMD
VDD
CLK
VSS
D0
D1
Sheet
R9
NC
B+1
S8
LED
105
C8
R24
4R7
+
C16
10V100UF
R5
10K
USB
USB
1
2
3
4
+5V
DM
DP
GND
R3
10K
Q2
8050
R16
47K
Q1
8050
473
C10
PH1
PJ-320D
1
4
2
3
106
C1
R21
10R
R13
6K8
C4 105
R4
NC
S3
FF
R18
2K
R19
2K7
R8
NC
NC
C2
R10
1K
SP+1
1
C14
NC
DM1
R11
2K2
S7
1
MIC1
C13
104
105
C12
D2
RED_LED
R2
NC
C6 105
C5 105
D1
BLUE_LED
S6
PP
105
C9
J1
USB2.0
6 7 8
9
5
4
3
2
1
6 7 8
9
VR1
MIC VOL+-
1
BT-ANT1
R15 NC
R1
150K
SP-1
DP1
VR2
混响 VOL+-
S4
FB
GND1
R6
47K
B-1
R22
NC
R7
NC
105
C7
R23
15R
R12
4K7
C15
NC
R14
10K
Yellow
Red
Black