Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
BTANT
0603
C12
2.7pF
BT_RF
SW5
NEXT/V+
GND
VBUS
1
D-
2
D+
3
GND
4
G2
5
G1
6
USB1
GND GND
BLUETOOTH
MINIUSB
ADKEY
AGND
GND
L2
NC
GND
SD
1
BYPASS
2
MODE
3
IN
4
OUT-
5
VDD
6
GND
7
OUT+
8
U2 MIX2018A
SPK1
3W/4Ω
MUTE
0603
C10
0.1uF
0603
C9
105
GND
VBAT
MIX2018A
0603
C8
105
AGND
0603
R7
30K
0603
R6
100K
VBAT
DACL
SW4
PREV/V-
SW1
ON/OFF
SW2
CALL
SW3
PP
BTLED
LED2
BLUE
GND
LED_BLUE
0603
R8 1K
VBAT
Y1 24MHz
0603
C1
NC
0603
C2
NC
GND GND
AC6928B
OSCI OSCO
LED3
RED
LED4
RED
LED5
RED
LED6
BLUE
LED7
BLUE
LED8
BLUE
LED9
GREEN
LED10
GREEN
LED11
GREEN
0603
R12
100R
0603
R13
100R
0603
R14
100R
LED_R
LED_B
LED_G
+3.3V
+3.3V
+3.3V
PC5/SD1/CLK
1
PC4/SD1CMD/ADC4
2
USBDM/PC3/SD1DAT/ADC10
3
USBDP/PA4/AUX1R/ADC1
4
PA0/MIC/PA3/AUX1L/ADC0
5
DACL
6
DACVDD
7
VCOM
8
VSSIO
9
VDDIO
10
PWMH2H/ADC9/AUX0R/PB5
11
VBAT
12
RTCVDD
13
ADC12/PR1
14
ADC12/PR2
15
BT_AVDD
16
BT_RF
17
FMIP
18
BT_OSCI
19
BT_OSCO
20
U1
AC6928B
LED_B
LED_G
LED_R
LED_BLUE
MIC_IN
DACL
DACVDD
VCOM
+3.3V
0603
C3
105
0603
C4
105
AGND
AGND
ADKEY
VBAT
RTCVDD
MUTE
POWER
BT_AVDD
BT_RF
OSCI
OSCO
0603
C6 105
0603
C7 105
0603
C11
105
GND
0603
R5
10K
0603
R4
1.5K
0603
R3
3.3K
ADKEY
POWER
LED
RED
Q1
9015
GND
0603
R10
1K
0603
R9
1K
VBAT
VIN
0603
R1
2.7R/0805
VIN
D1
5819
BT1
Battery
GND
VBAT
MK1
Mic
0603
C13
104
0603
R11
6.8K
0603
C14
MIC
MIC_IN DACVDD
AGND AGND
PI01
PI02
PI03
PI04
PI05
PI06
CO
PIBT101
PIBT102
COBT1
PIBTANT01
COBTANT
PIC101
PIC102
COC1
PIC201
PIC202
COC2
PIC301
PIC302
COC3
PIC401
PIC402
COC4
PIC601
PIC602
COC6
PIC701
PIC702
COC7
PIC801
PIC802
COC8
PIC901 PIC902
COC9
PIC1001
PIC1002
COC10
PIC1101
PIC1102
COC11
PIC1201
PIC1202
COC12
PIC1301
PIC1302
COC13
PIC1401
PIC1402
COC14
PID101
PID102
COD1
PIL201
PIL202
COL2
PILED201
PILED202
COLED2
PILED301
PILED302
COLED3
PILED401
PILED402
COLED4
PILED501
PILED502
COLED5
PILED601
PILED602
COLED6
PILED701
PILED702
COLED7
PILED801
PILED802
COLED8
PILED901
PILED902
COLED9
PILED1001
PILED1002
COLED10
PILED1101
PILED1102
COLED11
PILED?01
PILED?02
COLED?
PIMK101
PIMK102
COMK1
PIQ101
PIQ102
PIQ103
COQ1
PIR101
PIR102
COR1
PIR301
PIR302
COR3
PIR401
PIR402
COR4
PIR501
PIR502
COR5
PIR601
PIR602
COR6
PIR701 PIR702
COR7
PIR801
PIR802
COR8
PIR901
PIR902
COR9
PIR1001
PIR1002
COR10
PIR1101
PIR1102
COR11
PIR1201
PIR1202
COR12
PIR1301
PIR1302
COR13
PIR1401
PIR1402
COR14
PISPK101
PISPK102
COSPK1
PISW101
PISW102
COSW1
PISW201
PISW202
COSW2
PISW301
PISW302
COSW3
PISW401
PISW402
COSW4
PISW501
PISW502
COSW5
PIU101
PIU102
PIU103
PIU104
PIU105
PIU106
PIU107
PIU108
PIU109
PIU1010
PIU1011
PIU1012
PIU1013
PIU1014
PIU1015
PIU1016
PIU1017
PIU1018
PIU1019
PIU1020
COU1
PIU201
PIU202
PIU203
PIU204
PIU205
PIU206
PIU207
PIU208
COU2
PIY101
PIY102
COY1
NC