Schematics

5616
MIC
LED
VBAT/GND/PB3(USBDP)
R3
100mA 2.2R
100mA 1R
Revision
1.0
Title
File:
Date:
Size Number
Sheet of
Drawn By:
C4
105
C8
106
L2
0R
L3
NC
L4
NC
Y1
26MHZ
C28
105
L6
10UH
C1
100P
C14
100P
C2 105
P1
R+
P2
R+
1
AGND
2
VUSB
3
VDDIO
4
VBAT
5
LX
6
GND
7
VDDBT
8
PWRKEY
9
BTIN
10
VDDBT
11
X1
12
X2
13
PB4
14
PB3
15
DP
16
MICIN
17
L+
18
L-
19
VDDDAC
20
VDDI2
U1
5616A
D1
BLUE
D3
RED
C15
105
C24
NC
R3 0R
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
1
GND
2
VM
4
VDD
3
GND
U2
XB4302
R2
100R
C3
105
ANT1
ANT3216
R1
NC
1
VDD
2
GND
3
GND
4
MIC
MIC1
MIC
C6 104
VDDBT
VBAT
VUSB
PWRKEY
RED
BLUE
MICIN
DACL
DACL#
GND
VBAT
GND
BLUE
DACL
DACL#
VDDDAC
VUSB
BLUE
RED
VBAT
PA7
GND
VDDBT#
PWRKEY
GND
GND
VDDDAC
MICIN
GND
A
battery
power source
Charging current setting
<
>
Wiring of earphone horn
Upgrade interface