Schematics

POWER
MCU
KEY 、 LED
Mic 、 Earphone
C8
NC
C9
NC
BT_OSCOBT_OSCI
Y1 24M
D1
BLUE
D2
RED
BT_OSCO
BT_OSCI
C1
105
C2
105
C10
106
L1
10uH/150mA
BT_AVDD
RTCVDD BT_AVDD DC5V VBAT
L4
NC
C15
0R
L2
NC
BT_ANT
BT_RF
GND
VCOM DACVDD AGND VCOMO DACL MIC DACR
C13
224
C7
105
C5
105/16V
SW
C17 105
+3.3V
C14
104
C12
104
MIC
DACVDD
P/P/POWER
BT1
3.4V~4.2V
VBAT
C6
105/16V
USBDP
USBDM
ADC11/USBDM
23
USBDP
24
BT_OSCO
19
BT_RF
16
SW
8
BT_OSCI
18
GND
0
PGND
7
NC
3
LDO_IN
10
RTCVDD
12
VDDIO
2
DACVSS
32
VCOM
31
MIC/PB10
26
VSSIO
17
DACR
27
DACL
28
DACVDD
30
VCOMO
29
VBAT
9
BT_AVDD
11
PR1/ADC12
13
AUX1L/ADC0/PA3
25
PR0
15
PR2/ADC12
14
ADC10/SD1DAT/PC3
22
HPVDD
1
SD1CLK/PC5
20
ADC4/SD1CMD/PC4
21
PB8/AUX2R/ADC9
4
PB7/AUX2L/ADC8
5
PB0/ADC6
6
U1
8006B_QFN32_4x4
LED_B
LED_R NEXT/V+
PREV/V-
T1 DP
T2 DM
DC5V
+5V
1
DM
2
DP
3
ID
4
6
GND
6
6
6 6
J4
USB(MICRO)
LED_B
LED_R
C11
104
L3
NC
C16
2.7P
R1
330R
C3
105
HPVDD
GND
SD0
1
SDA/SDI/SDO
2
VDD_IO
3
NC
4
INT
5
INT2
6
VDD
7
GND_IO
8
GND
9
CSB
10
NC
11
SCL
12
U2
DA230
G_SCL
G_SDA
RTCVDD
RTCVDD
G_PWRON
C18
104
G_PWRON
C4
104
G_SCL
G_SDA
M1
MSM_MIC
DACL'
VCOMO'
DACR'
VCOMO'
C21
NC
C20
NC
C19
NC
C22
NC
DACL
VCOMO
DACR
DACL'
VCOMO'
DACR'
J1
L_Earphone
J2
R_Earphone
L5
120nH
L6
120nH
L7
120NH
C24
NC
C23
NC
C25
NC
DACL
DACR
DACL'
DACR'
L8
120nH
L9
120nH
DACR'
J5
Earphone
DACL'
TWS
S1
PREV/V-
S2
NEXT/V+
S3
P/P/POWER/TALK
PREV/V-
NEXT/V+
P/P/POWER
G-SENSOR
8006_QFN32_4x4