Schematics

MARK
Bluetooth
M1 M2 M3
R24
22K
Y1
24MHz
LED1
M4
C9
105
C11
105
1
PC5/SD0CLKA/ADC12
2
PC4/SD0CMDA/ADC11
3
USBDM/PC3/SD0DAT/ADC14
4
USBDP/ADC13
5
PA4/AUX0R/ADC3
6
PA3/AUX0L/ADC2
7
PA2/MIC_BIAS
8
PA1/MIC/ADC1
9
PA0/SD_PG/ADC0
10
DACVSS
11
VCOM
12
DACL
13
ADC9/AUX1R/SD0CLKF/PB7
14
ADC8/AUX1L/SD0CMDF/PB6
15
ADC7/SD0DATF/PB4
16
PB5/LDO_IN
17
VBAT
18
VDDIO
19
ADC5/PB1
20
VSSIO
21
FMIP
22
BT_RF
23
BT_OSCI
24
BT_OSCO
U2
AC6965E
C13
105
1GND
2R
3
L
4DET
AUX1
B1
BT_RF
R25
1K
C5
105
1
VOUT
2
GND
3
EN
6
CRY2
5
VIN
4
CRY1
U4
4004
C26
105
C28
106
C29
105
R10
R1
10K
C6
105
C14 102
SP+
SP-
R27
100K
R29
100K
C2
102
R30
30K
C16
104
1
VSEL
2
EN
3
OCP
4
L
X
5
V
B
A
T
6
P
V
D
D
7
OUTN
8
OUTP
9
INN
10
INP
U5
LTK5302
C12
105
C17 105
+
EC2
470uF/10V
L2
4.7uH
R32
NC
R33
1K
R34
1K
R35
NC
R36
30K
C4
104
C20
103
R37
1R
R3
NC
R4
2R2
+
E
C
1
4
7
0
u
F
/
1
0
V
R8 15K
R5 33K
R22
9.1K
R7
51K
POWER
4.5*4.5*4.0MM
NEXT/+
4.5*4.5*4.0MM
PREV/L-
4.5*4.5*4.0MM
3
1
2
D3
BAT54C
LIGHT
4.5*4.5*4.0MM
P/P
4.5*4.5*4.0MM
DS
G
Q2
2301
R14
100K
R15
1K
R16
10K
Q3
3904
B+
B-
BAT1
L
5
6
0
0
R
/
1
0
0
M
1
GND
2
VUSB
3
4
5
VUSB
6
GND
78
91
0
USB2
ANT
R6
5.1K
R9
5.1K
1
2
MIC1
C10
NC
1
DO
2
+
3
-
4
DI
RGB1
1
DO
2
+
3
-
4
DI
RGB2
1
DO
2
+
3
-
4
DI
RGB3
1
DO
2
+
3
-
4
DI
RGB4
1
DO
2
+
3
-
4
DI
RGB5
1
DO
2
+
3
-
4
DI
RGB6
1
DO
2
+
3
-
4
DI
RGB7
1
DO
2
+
3
-
4
DI
RGB8
1
DO
2
+
3
-
4
DI
RGB9
R11
1R
L9
NC
C50
NC
1
FB
2
LX
3
PVDD
4
OUT-
5
OUT+
6
IN+
7
IN-
8
CTRL
9
G
N
D
U3
NC
R53
NC
C7
NC
R54
NC
C8
NC
R55
NC
C15
NC
C18
NC
+
EC4
NC
R
5
6
N
C
R57
NC
C23
NC
D2 NC
C19
NC
R12 NC
R13 NC
C21
NC
1
TEMP
2
PROG
3
G
N
D
4
VIN
5
BAT
6
STDBY
7
CHRG
8
EN
U1
4056
C
1
1
0
6
R2
1.2K
C25
106
R17
1K
L
E
D
2
红
色
1
2
C
N
1
D
4
N
C
D
5
N
C
R28
3.3K
1
DAT2
2
CD/DAT3
3
CMD
4
VDD
5
CLK
6
VSS
7
DAT0
8
DAT1
9
DET
1
0
1
1
1
2
1
3
TF1
R26
2R2
L10
600R/100M
L11
600R/100M
L12
600R/100M
D
7
N
C
D
8
N
C
D
6
N
C
D
9
N
C
L8
600R/100M
L1
600R/100M
D
1
0
N
C
D
1
1
N
C
D
1
2
N
C
1
5V
2
DM
3
DP
4
GND
USB1
D13
NC
D1
NC
L3
600R/100M
L4
600R/100M
L6
600R/100M
L7
NC
L13
NC
C3
102
C22
102
+3.3V
BTOSCO
BTOSCI
FM_ANT
BTOSCI
BTOSCO
USBDP
USBDM
AUX_DET
AUX
BT_RF
DACL
VCOM
BT_RF
GND
+3.3V
BT_VCC
ADK
MIC
AUX
SD_CLK
SD_CMD
SD_DAT
MUTE
PLED
VBAT
POWER_EN
BAT_DET
DACL INL
VBAT BAT_DET
MUTE
BAT+
INL
BAT+
PLED
BT_VCC+5V
ADK
ADK
KEY_ON
VBAT
POWER_EN
KEY_ON
BAT+
FM_ANT
FM_ANT
MIC
RGB_EN
VBAT
+5V
INL
PVDD
BAT+
SD
SD
MUTE
SP+
SP-
AUX_DET
RGB_EN
+3.3V
SD_VDD
SD_DAT
SD_CMD
SD_CLK
SD-CMD
USBDM
USBDP
+5V
SP-
SP+