Schematics

MCU
Mic 、 Earphone
BT_OSCOBT_OSCI
Y1 24M
BT_OSCO
BT_OSCI
+3.3V
DC5V VBAT
L2
NC
BT_ANT
BT_RF
AGND
DACL
MIC
DACR
C3
105/16V
C5
NC/16V
P/P/POWER
C6
10516V
LED_B/R
L3
NC
C16
2.7P
C1
105/10V
MIC_BIAS
MIC MIC
+
M2
MIC4013
C22
NC
MIC
BT_AVDD
C14
NC
MIC
MIC_BIAS
C19
NC
C15
104
MIC
DACR
J5
Earphone
DACL
C8
NC
C9
NC
L4
0R
L5
0R
VDD
1
OUT
4
GND
3
GND
2
M1
MIC3722/2718
VM_PWR
LED
D1
BLUE
D2
RED/CHARG_LED
LED_B/R
+3.3V
Test Point POWER
USBDP
USBDM
R1
1K
T1
VBAT
T2
DM
T3
DP
T4
GND
VBAT
USBDP
USBDM
GND
D4
NC
D5
NC
DAC
BT_OSCO
13
GND
0
DACR
2
VBAT
7
DACL
1
VDDIO
19
LDO_IN
6
BT_RF
10
BT_AVDD
8
BT_OSCI
12
DACVSS
20
USBDM
15
PB4/ADC12
5
MIC0/PA1
18
MIC0_BIAS/PA2
17
PB1/ADC6/LP_TH0
9
USBDP
16
GND
11
PB7/ADC8
3
PB6/ADC9
4
ADC5/PC5
14
U1
AD6983B_QFN20
D6
B-TVS
GND
P/P/POWER
Touch PAD
C7
1pF~50pF
C18
104
VM_PWR
S1
P/P/POWER/TALK
P/P/POWER
D7 NC
Touch PAD
P/P/POWER
D8 NC
QD
1
VSS
2
TCH
3
TOG
6
NC
4
VDD
5
U2
TCS9044/VM8233D
R5
NC/0R
AGND
AGND
AGND
ST0321D4S
HY9N3BU-D
ESD2D005LA
R3
NTC_100K
R2
100K_1%
NTC_VDD
NTC_DET
NTC
BOAT_PL
NTC_VDD
NTC_DET
DC5V
D3
U-TVS
TP1
+5V
TP2
GND
+
-
BAT
3.4V~4.2V
VBAT
SM
3
VM
4
GND
2
VDD
1
EPAD
0
U7
TCB9042B(DFN1x1)
C31
104
R4
1K
D9
NC
GND
3
VM
4
GND
2
VDD
1
U6
TCB9042(DFN1x1)
C34
105
R8
100K
BOAT_PL