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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
LGE Internal Use Only
3.5. Micro-SD & SIM Card Interface
Figure 3-5-1 GM200 Micro-SD & SIM Circuit Diagram
GM200 using SIM & uSD dual-socket. GM200 SIM & uSD interface scheme is shown in
SIM Interface
SIM_CLK : SIM card reference clock
SIM_RST : SIM card Async /sync reset
SIM_DATA : SIM card bidirectional data
Micro SD interface
uSD_D[0:3] : Data bit [0:3]
uSD_CMD : Command response
uSD_CLK : Clock
uSD_DET : uSD detect
T
E
K
C
O
S
D
I
R
B
Y
H
M
I
S
&
D
S
u
2
1
6
D
N
G
1
1
0
1
A
W
S
B
W
S
9
3
4
4
5
5
6
6
7
7
8
8
C1
C1
C2
C2
C3
C3
C5
C5
C6
C6
C7
C7
1
D
N
G
6
1
5
1
2
D
N
G
4
1
3
D
N
G
4
D
N
G
3
1
5
D
N
G
1
0
9
7
1
0
0
Y
S
N
E
2
-
3
3
7
3
4
7
1
3
0
1
N
C
1
1
2
2
3
2
7
1
C
u
1
R134
56K
22p
C157
22p
C156
M
I
S
V
_
5
8
V
2
1
7
1
C
p
0
0
0
1
2V85_VSIM
2V85_VSIM
L106
100nH
0
6
1
C
u
1
.
0
D105
R133
56K
L105
100nH
D104
R136
56K
R132
56K
L107
100nH
6
0
0
1
_
E
D
O
I
D
_
I
N
D
D103
7
2
1
R
K
7
.
4
D102
R135
56K
6
0
1
U
F
-
R
T
-
D
1
8
2
K
4
0
1
P
R
1
0
6
5
5
3
0
Y
S
U
E
C
N
_
E
C
3
D
N
G
2
PGND
5
4
T
U
O
V
D
D
V
1
56K
R131
3
0
1
L
H
n
0
0
1
T
A
B
V
u
1
5
7
1
C
3
7
1
C
p
2
2
T
X
E
V
_
3
9
V
2
100nH
L104
N
E
_
O
D
L
_
F
T
SIM_CLK
SIM_RST
SIM_DATA
3
A
T
A
D
_
F
T
D
M
C
_
F
T
0
A
T
A
D
_
F
T
1
A
T
A
D
_
F
T
2
A
T
A
D
_
F
T
T
E
D
_
F
T
K
L
C
_
F
T