Schematics

BT
Charge
TP101
TP102
TP103
TP104
R206
1K
C
2
0
5
N
C
C204
100nF
R207
1uF
C
2
0
3
N
C
R
2
0
5
N
C
C
2
0
2
1
K
C210
470nF R204
47K
C
3
0
1
1
0
0
n
F
C
3
0
0
1
0
u
F
J303
1
SD
2
BYPASS
3
MODE
4
IN-
5
VO+
6
VDD
7
GND
8
VO-
U201
CS8571
C
2
0
7
2
2
u
F
C201
1uF
R203
NC
1
1
2
2
J201
1
T
P
2
0
3
N
F
1
T
P
2
0
4
N
F
TP105
R
3
0
1
1
K
+ C
2
0
8
4
7
u
F
R
4
1
0
6
.
8
K
C410
100nF
C
4
1
1
N
C
2
2
1
1
LED301
2
2
1
1
L
E
D
3
0
2
R305
1K
FB401
0R
C
4
0
1
2
2
u
F
123
6789 54
K
1
0
1
S
W
I
T
C
H
-
S
L
I
D
E
-
M
S
K
-
1
2
C
0
2
R306
5.1K
C
3
0
2
1
0
u
F
1
STAT
3
BATT
4
VIN
5
ISET
2
GND
U301 LTC4054
1
P
2
N
J401
NF
1
VBUS
2
DM
3
DP
4
ID
5
GND
6
78
9 1
0
J301
CHG/LINE_IN
U102
24MHz
C109
NC
C110
NC
1
PC5/SD1CLK
2
PC4/SD1CMD/ADC4
3
PC3/SD1DAT/ADC10
4
USBDM/ADC11
5
USBDP
6
PA0/MIC/PA4/AUX1R/ADC1
12
VDDIO
11
DACVSS
10
VCOM
9
DACVDD
8
DACL
7
PA3/AUX1L/ADC0
18
VBAT
17
ADC6/PB0
16
ADC7/PB1
15
SD0DAT/PB3
14
ADC8/AUX0L/SD0CMD/PB4
13
ADC9/AUX0R/SD0CLK/PB5
19
BT_AVDD
20
BT_RF
21
FMIP
22
VSSIO
23
BT_OSCI
24
BT_OSCO
U101
IC-BT-AC6925B-SOP24-JL
C107
2.7pF
R102
0R
C
1
0
6
N
C
C
1
0
8
N
C
C102
1uF
C101
1uF
C103
1uF
C104 1uF
C105
1uF
1
A
N
T
1
0
1
R
4
0
1
1
0
K
R
2
0
8
1
0
0
K
1
E
3
C
2
B
Q201
DTC143ZE
R209
0R
[1]
BAT
[1]
DACL
AGND
[1]
USB_5V
[1]
USB_DM
[1]
USB_DP
[1]
GND
[1]
BAT
GND
[1]
USB_5V
[1]
USB_DM
[1]
USB_DP
BAT
GND
[1]
BAT
[1]
BAT
[
1
]
B
L
U
E
_
L
E
D
[1]
USB_5V
DACVDD
[1]
MICIN
AGNDAGND
VBAT
[1]
BAT
[1]
USB_5V
BAT
X1
AGND
[1]
X0
[1]
X1
[1]
X1
[1]
X0
A
G
N
D
LED-W
[1]
BLUE_LED
[1]
USB_DM
[1]
USB_DP
[1]
DACL
[1]
MICIN
AUXL
3V3
[1] MUTE
CMD
DAT
VCOM
DACVDD
AGND
BT_AVDD
VBAT
LED-S
[1]
MUTE
BAT