Table of Contents
Advertisement
3.5. Dual SIM & u-SD Interface
3.5.1. Dual SIM Interface
KS660 supports dual SIM mode and each SIM supports 1.8V & 2.9V plug in SIM, SIM interface scheme
is shown in (Figure 8).
SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with BBP(S-Gold3) and the SIM power
supply enabled by PMIC.
SIM Interface
SIM_CLK : SIM card reference clock
SIM_RST : SIM card Async /sync reset
SIM_IO : SIM card bidirectional reset
2
V
I S
M
1
_
C
L
K
I S
M
1
_
R
S
T
C
7
0
1
C
7
2
7
p
1
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
9
_
I S
M
_
1
G
N
D
1
G
N
D
2
7
8
C
L
K
_ I
O
I S
M
1
_
O I
3
6
R
S
T
V
P
P
2
5
V
C
C
G
N
D
1
4
J
7
0
0
0
2
C
7
0
3
u
2
7
p
I S
M
S
W
T I
C
H
S
G
R
_
I S
M
2
_
R
S
T
I S
M
1
_
R
S
T
S
G
3
_
I S
M
1
_
R
S
T
I S
M
_
S
W
T I
C
H
S
G
R
_
I S
M
2
_
C
L
K
I S
M
1
_
C
L
K
S
G
3
_
I S
M
1
_
C
L
K
S
G
3
_
I S
M
1
_
C
L
K
I S
M
2
_
C
L
K
I S
M
_
S
W
T I
C
H
S
G
R
_
I S
M
2
_
C
L
K
2
V
9
_
I S
M
2
V
9
_
I S
M
_
1
V
I S
M
_
2
V
9
I S
M
_
S
W
T I
C
H
< Fig 10. Dual SIM Interface >
I S
M
2
_
C
L
K
I S
M
2
_
R
S
T
C
5
3
4
1
5
0
p
V
B
A
T
C
7
0
0
0
1 .
u
F
S
G
R
_
I S
M
U
7
0
0
N
L
A
S
T
9
4
3
1
M
T
1
1
2
N
C
_
A
1
C
O
M
_
D
I S
M
2
_
R
S
2
1
1
S
A
B
N
O
_
D
0
S
G
3
_
I S
M
3
1
0
N
O
_
B
0
S
C
D
4
9
C
O
M
_
B
N
C
_
C
1
S
G
3
_
I S
M
1
S
G
R
V
B
A
T
U
7
0
1
N
L
A
S
5
2
2
3
B
M
N
R
2
G
1
1
0
S
G
3
_
I S
M
1
_
O I
V
C
C
N
O
2
2
9
I S
M
2
_
O I
N
O
1
C
O
M
2
3
8
C
O
M
1
N I
2
4
7
S
G
R
_
I S
M
2
_
O I
N I
1
N
C
2
5
6
N
C
1
G
N
D
1
u
C
7
0
4
V
B
A
T
2
V
9
_
I S
M
V
I S
M
_
2
V
9
_
2
V
I S
M
_
U
7
0
3
N
L
A
S
5
2
2
3
B
M
N
R
2
G
1
1
0
V
C
C
N
O
2
2
9
N
O
1
C
O
M
2
3
8
C
O
M
1
N I
2
4
7
N I
1
N
C
2
5
6
N
C
1
G
N
D
C
7
1
1
0
1 .
u
F
- 35 -
3. TECHNICAL BRIEF
V
I S
M
_
2
V
9
_
2
G
N
D
1
G
N
D
2
7
8
C
L
K
_ I
O
3
6
R
S
T
V
P
P
2
5
V
C
C
G
N
D
1
4
J
5
0
0
C
5
3
5
C
5
3
6
0
1 .
u
2
2
p
2
_
R
S
T
T
1
_
R
S
T
I S
M
1
_
O I
_
O I
_
I S
M
2
_
O I
2
V
9
LGE Internal Use Only
I S
M
2
_
O I
Advertisement
Table of Contents
Troubleshooting
