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3. TECHNICAL BRIEF
Figure 3.1.2 SKY77517 FEM Package Pad configuration -20-Pad Leadless (Top view)
Pin
Mame
1
VCATT
2
VLOGIC
3
VRAMP
4
TX_EN
5
BS
6
PCS_RX
7
GSM_RX
8-1
GND
11
ANT
12-16
GND
17
GSM_IN
18
NC
19
PCS_IN
20
GND
GND PADS
GROUND GRID
Mode
STANDBY
GSM_RX
PCS_RX
GSM_TX
PCS_TX
LGE Internal Use Only
and Typical case marking
Battery input voltage
Control logic level selection/Standby control
Analog power control voltage input
TX/RX select (mode control)
Band Select (mode control)
PCS Receive RF Output (1930-1990 MHz)
GSM Receive RF Output (869-894 MHz)
RF and DC Ground
RF_IN/RF_OUT to Antenna
RF and DC Ground
RF input 824-849 MHz
No Connect
RF input 1850-1910 MHz
RF and DC Ground
Ground Pads, module underside
Table 3.1.3 Pad description
Table 3.1.4 SKY77517 Mode Control logic
- 16 -
Description
Input Control Bits
V
LOGIC
TX_En
0
X1
1
0
1
0
1
1
1
1
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
BS
X1
0
1
0
1
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