LG KP175 - Band Select

3.2 Band Select
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3. TECHNICAL BRIEF
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Only for training and service purposes
Table 3.2.1 Band SW Logic Table
Figure 3.2.1 PAM+ASM CIRCUIT DIAGRAM
Mode
VLOGIC
Input Control Bits
TX_En BS
STANDBY 0 X
1
X
1
GSM_RX 1 0 0
DCS_RX 1 0 1
GSM_TX 1 1 0
DCS_TX 1 1 1
GND2
9
GND3
10
12
GND4 GND5
13
GND6
14
GND7
15
16
GND8
20
GND9
17
GSM_IN
GSM_RX
7
18
NC
PGND
21
4
TX_EN
VBATT
1
2
VLOGIC
VRAMP
3
U501
SKY77518
ANT
11
BS
5
19
DCS_IN
DCS_RX
6
8
GND1