Schematics

AC6965E
KEY
LED
TEST
Battery
Crystal
Line_in
CONNECTER
Microphone
SPK
LED_EN
1
DM
1
DP
1
V5
1
GND
D1
Blue
Y1
24MHZ
MAKE
BATCON2P-2.0mm
R332.7K
1
CHRG
2
GND
3
BAT
4
VCC
5
PROG
U4
TP40 54
VBUS
DM
DP
GND
GND
USB
MICRO
C20
10uF
C21
10uF
D3 White
R1
510R
SA
FU
1
2
3
4
J2
PHONE4
R3
33K
R5
20K
D6
NC
D4
NC
D5
NC
PREV NEXT
MFB
+
R17
5.6K
D9 NC
D2 White
D11
Blue
C7
1uF
R2
33K
C16 1uF
R6
100R
R20
NC
1
2
RF
L1
NC
L3
NC
C5 2.7pFF
1
PC5/SD0CLKA/ADC12
2
PC4/SD0CMDA/ADC11
3
USBDM/PC3/SD0DATA/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
U1 AC6965E
C1 1uF
C2 1uF
C3 1uF
C4 1uF
C24 0.1uF
D7
NC
1
2
3
CON2
1 2 3
CON1
D8
NC
D10 NC D12 NC
1
T1
1
T2
1
T3
D13
NC
D14
NC
2
1
3
Q1
MMBT8050
R11
1K
R12
47K
R10
0R
1
+
2
-
SP2
4R
L4
4.7UH
C22
470uF
L6 0R
L2
0R
C31 1000uF
1
VSEL
2
EN
3
OCP
4
LX
5
VBAT
6
PVDD
7
OUTN
8
OUTP
9
INN
10
INP
11
GND
U2
LTK5302
R8
330K
C8 NC
C9 NC
C10 10uF
C11 1uF
R9
1R
C12 10NF
R433K
C13
10uF
C14
1uF
R7
NC
R18
20K
R19
20K
C15 474pF
C18 474pF
R15
2K
C19 1uF
R14 12K
R13
100K
USBDM
USBDP
VBUS
GND
VBAT
RED
GND
VBAT
DC5V
REDDC5V
BT_OSCO BT_OSCI
AUX_RL
LIN_DET
MFB
PREV NEXT
MIC_BIAS
MIC
LDO_IN
BT_OSCO
BT_OSCI
MFB
MUTEDACL
MIC
MIC_BIAS
USBDM
AUX_RL
PREV
NEXT
PREV
USBDP
LIN_DET
LED_EN
NEXT
USBDM
USBDP
BT_LED
BT_LED
LED_EN
VBAT
DACL
MUTE