Bluetooth Trouble - LG KT610 Service Manual
Hide thumbs
Also See for KT610:
- User manual (346 pages) ,
- User manual (170 pages) ,
- User manual (104 pages)
Table of Contents
Advertisement
4.18 Bluetooth trouble
Bluetooth control signals are generated by STN8810.
Bluetooth Chip (STLC2500) and peripherals are mounted in Sub Board which is connected by B-to-B
connector.
Those signal's path are : STN8810
→
CLK32K is asserted
REF_CLK_IN is asserted
data through PCM I/F AP_VDD_IO_2.7V is same with AP_VDD_BT_2.7V which are just connected
through 0 ohm resistor
A
P
_
V
D
D
_
B
T
_
2
7 .
V
X100
X
1
0
0
C
S
C
3
M
1
9
2
0
0
0
E
E
V
R
S
0
0
B
T
_
R
E
S
E
T
N
4
3
V
D
D
O
U
T
1
2
C
L
K
3
2
K
T
R
_ I
O
P
E
N
G
N
D
1
9
2 .
M
H
z
C
1
0
0
1
u
U
T
X
D
0
U
R
T
S
0
N
P
C
M
C
L
K
P
C
M
S
Y
N
C
P
C
M
D
A
T
A
N I
P
C
M
D
A
T
A
O
U
T
A
P
_
V
D
D
_
B
T
_
2
7 .
V
A
P
_
V
D
D
_
O I
_
1
8 .
V
R110
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
→
AP_VDD_IO_1.8V and AP_VDD_IO_2.7V is asserted
→
Bluetooth ON
BT_RESETN is High
→
transmit/receive data/control through UART
U
1
0
1
S
T
L
C
2
5
0
0
C
D
3
R
E
S
E
T
_
N
D
6
R
E
F
_
C
L
K
_
N I
G
3
P
_
C
L
K
L
C
4
C
L
K
_
R
E
Q
_
O
U
T
_
1
C
5
B
T
_
W
A
K
E
U
P
F
5
F
6
U
A
R
T
_
R
X
D
U
A
R
T
_
T
X
D
G
4
F
4
U
A
R
T
_
C
T
S
U
A
R
T
_
R
T
S
D
1
P
C
M
_
C
L
K
C
2
P
C
M
_
S
Y
N
C
D
2
P
C
M
_
A
E
1
P
C
M
_
B
B
3
G
P
O I
_
1
6
C
3
G
P
O I
_
8
B
1
B
2
G
P
O I
_
9
G
P
O I
_
1
1
C
1
G
P
O I
_
1
0
D
5
A
2
G
P
O I
_
0
V
S
S
_
R
F
1
E
6
A
5
C
L
K
_
R
E
Q
_
N I
_
1
V
S
S
_
R
F
2
G
6
C
L
K
_
R
E
Q
_
N I
_
2
F
7
H
O
S
T
_
W
A
K
E
U
P
E
2
A
3
C
O
N
F
G I
_
1
R
F
P
F
2
A
4
C
O
N
F
G I
_
3
R
F
N
F
1
C
O
N
F
G I
_
2
G
7
C
L
K
_
R
E
Q
_
O
U
T
2
A
6
T
O
U
T
_
P I
_
Q
N
B
5
E
3
T
O
U
T
_
N I
_
Q
P
V
S
S
_
D
G I
1
E
4
V
S
S
_
D
G I
2
G
2
V
D
D
_
D
G
5
V
D
D
_
O I
_
A
F
3
V
D
D
_
O I
_
B
E
7
V
D
D
_
C
L
D
B
4
V
S
S
_
A
N
A
1
A
7
B
6
V
D
D
_
H
V
_
A
V
S
S
_
A
N
A
2
C
6
V
S
S
_
A
N
A
3
G
1
V
D
D
_
H
V
_
D
B
7
V
D
D
_
D
S
M
C
7
V
D
D
_
N
D
7
E
5
V
D
D
_
C
L
A
F
_
P
R
G
A
1
V
D
D
_
R
F
B
L
U
E
T
O
Figure. Schematic of Bluetooth Interface
- 149 -
→
CLK_REQ_OUT_1 is High
U
R
X
D
0
U
C
T
S
0
N
FL100
C123
D
E
A
2
1
2
4
5
0
B
T
7 -
0
4
3
C
1
F
L
1
0
0
C
1
5
1
B
P
1
U
_
B
P
4
2
B
P
2
B
P
_
D
C
C
1
D
I N
O
T
H
M
O
D
U
L
E
→
→
→
transmit/receive voice
A
P
_
V
D
D
_
O I
_
2
7 .
V
A
P
_
V
D
D
_
B
T
_
2
7 .
R
1
0
9
0
R109
C
1
0
7
3
3
u
ANT100
A
N
T
1
0
0
2
3
1
0
p
N
C
1
F
E
E
D
N
C
2
L
1
0
1
2
4
1
5 .
p
LGE Internal Use Only
V
Advertisement
Table of Contents
