3.22 Front End Module control
Implemented in the S-Gold3 (FL600) are two outputs which are FE1, FE2 for direct control of front end
modules with two logic input pins to select RX and TX mode as well as low and high band operation.
FEM need 2V85_VRF supply.
Table 12 FEM Control Logic
- 64 -
3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
MODE
Tx 1GHz
Tx 2GHz
Rx 1GHz
Rx 2GHz
VDD ON
ON
ON
ON
VC1
OFF
ON OFF
ON
VC2
ON ON OFF
OFF
RF
G
R
S
3
0
2
-
2
S
-
H
2
2
-
E
3
0
0
0
E
N
W
Y
0
0
0
6
3
0
1
T
N
A
1
G
2
G
F
R
1
0
6
C
I
N
D
SW600
GND601
5
0
6
C
p
7
4
2
0
6
C
u
1
G
S
M
1
9
0
0
_
R
X
1
G
S
M
1
9
0
0
_
R
X
2
8
G
S
M
8
5
0
_
9
0
0
_
T
X
1
5
1
G
S
M
8
5
0
_
R
X
1
G
S
M
8
5
0
_
R
X
2
2
3
G
S
M
9
0
0
_
R
X
1
4
G
S
M
9
0
0
_
R
X
2
V
C
1
1
4
1
3
V
C
2
V
D
D
1
2
A
N
T
7
1
9
G
N
D
1
1
1
G
N
D
2
1
6
G
N
D
3
1
8
G
N
D
4
1
9
G
N
D
5
2
0
G
N
D
6
G
SM
1
8
0
0
_
1
9
0
0
_
T
X
1
0
G
S
M
1
8
0
0
_
R
X
1
5
G
S
M
1
8
0
0
_
R
X
2
6
7
FL600
SFAY0011101
DGM1110M014
1
L
0
1
6
R
0
GND600
I
N
D
1
1
6
C
VRF_2V85
9
0
6
C
I
N
D
4
0
6
C
p
7
4
9
0
6
R
0
H
n
2
.
2
3
0
6
L
I
N
D
0
0
6
C
1
1
6
R
0
3
0
6
C
p
9
3
p
0
8
1
6
0
6
C
1
0
6
L
H
n
2
1
1
6
C
1
E
F
2
E
F
Figure 29 FEM schematic
Содержание KP500
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Страница 169: ...Note ...
Страница 170: ...Note ...
