Schematics

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
BAT+
MIC
DACVDD
MIC
OSCO
OSCI
VMCU
RTCVDD
DACL
DACVDD
VCOM
+3.3V
MUTE
POR
BT_AVDD
DACL
LED
IN-
MUTE
IN-
POR
P/P
V-
V+
LED
P/P
V-
V+
VMCU BAT+
BAT+
Title
Size Document Number Rev
Date: Sheet of
AC6928B V1.0
松佳
A4
1 1Saturday, April 11, 2020
Title
Size Document Number Rev
Date: Sheet of
AC6928B V1.0
松佳
A4
1 1Saturday, April 11, 2020
Title
Size Document Number Rev
Date: Sheet of
AC6928B V1.0
松佳
A4
1 1Saturday, April 11, 2020
KEY
MICRO
MIC
MAIN
AMP
K3 4.5x4.5x3.8MMK3 4.5x4.5x3.8MM
C22 105C22 105
CN2
2P2.0
CN2
2P2.0
1
1
2
2
D1 RedD1 Red
R7 NCR7 NC
K2 4.5x4.5x3.8MMK2 4.5x4.5x3.8MM
R12 1KR12 1K
C23 105C23 105
K1 4.5x4.5x3.8MMK1 4.5x4.5x3.8MM
D2 BlueD2 Blue
R11 2KR11 2K
U1 AC6928BU1 AC6928B
CLK
1
CMD/ADC4
2
DM/DAT/ADC10
3
DP/AUX1R/ADC1
4
MIC/AUX1L/ADC0
5
DACL
6
DACVDD
7
VCOM
8
VSSIO
9
VDDIO
10
ADC9/AUX0R/PB5
11
VBAT
12
RTCVDD
13
ADC12/PR1
14
RESET/PR2
15
BT_AVDD
16
BT_RF
17
FMIP
18
OSCI
19
OSCO
20
R8 1KR8 1K
A2
ANT
A2
ANT
C27
224
C27
224
Mic
M1
MIC4013
Mic
M1
MIC4013
1
C1 105C1 105
J5
MICRO_USB
J5
MICRO_USB
VBUS
5
D-
4
D+
3
ID
2
GND
1
Y2
24M
Y2
24M
1
2
C19 105C19 105
R9 22KR9 22K
C26
106
C26
106
C33
823
C33
823
C11 104C11 104
C28 NCC28 NC
U4 HT6872U4 HT6872
SD
1
BYSS
2
MODE
3
IN+
4
OUTN
5
VDD
6
GND
7
OUTP
8
R14 6.8KR14 6.8K
C42 NCC42 NC
C8 105C8 105
CN3
2P2.0
CN3
2P2.0
1
1
2
2
R19 470RR19 470R
C18 105C18 105
U3 4054U3 4054
CHG
1
GND
2
BAT
3
VCC
4
PROG
5
R2 6.8KR2 6.8K
K4 4.5x4.5x3.8MMK4 4.5x4.5x3.8MM
C34 101C34 101
C21 105C21 105
C36 105C36 105