Schematics

REVISION RECORD
APPROVED:ECO NO:LTR DATE:
123456
D
C
B
A
C
D
B
A
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
9
10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
U2
AC6966B
K1
POWER
K2
PREV/V-
K3
NEXT/V+
R4
5.1K
R2
2K
12
3 4
Y1
24.000M
1
2
E3
BT_ANT_A
C36
NC
L10
NC
1
VIN
2
DM
3
DP
4
GND
5
GND
6 7
9 8
USB1
1
2
J3
JUMP2
1 2 3
4
5
SW1
1
CHRG
2
GND
3
BAT
4
VCC
5
PROG
U1
4054
D5
RLED
C16
105
R10
1K
R8
2.2K
LED1
BLUE
R6
220R
C5
105
C7
105
C67
105
1
2
SP4
CON2
1
SD
2
BYP
3
+IN
4
-IN
7
GND
8
VO2
6
VDD
5
VO1
U9
LTK5129
R26
100K
R7
56K
C1
473
C6
105
C17
105
1
2
SP5
CON2
1
SD
2
BYP
3
+IN
4
-IN
7
GND
8
VO2
6
VDD
5
VO1
U10
LTK5129
R5
56K
C2
473
C40
105
C57
105
C65
105
R16
1K
1
2
SP3
1
2
SP1
1
2
SP2
R18
1K
BT_OSCI BT_OSCO
BT_RF
VMCU1
ADKEY
VMCU
VMCU
MUTE
AB/D
DACL
VMCU
MUTE
AB/D
DACR
DACL
DACR
VMCU
ADKEY
MUTE
BT_RF
BT_OSCO
BT_OSCI
VMCU
AB/D