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LTE-A Module Series
EG18 Hardware Design
EG18_Hardware_Design 36 / 104
1. The W_DISABLE# control function is disabled in firmware by default. It can be enabled by
AT+QCFG="airplanecontrol"
command, and this command is under development.
2. The execution of
AT+CFUN
command will not affect GNSS function.
3.5. Power Supply
3.5.1. Power Supply Pins
EG18 provides six VBAT pins dedicated to the connection with an external power supply. There are two
separate voltage domains for VBAT.
Four VBAT_RF pins for RF part
Two VBAT_BB pins for baseband part
The following table shows details of VBAT pins and ground pins.
Table 7: VBAT and GND Pins
Low Level
AT+CFUN=0
AT+CFUN=1
AT+CFUN=4
RF Disabled
Airplane mode
Pin Name Pin No.
Description
Min.
Typ.
Max.
Unit
VBAT_RF
85, 86, 87, 88
Power supply for the
module’s RF part
3.3
3.8
4.3
V
VBAT_BB
155, 156
Power supply for the
module
’s baseband part
3.3
3.8
4.3
V
GND
10, 13, 16, 17, 24, 30, 31,
35, 39, 44, 45, 54, 55, 63,
64, 69, 70, 75, 76, 81~84,
89, 90, 92~94, 96~100,
102~106, 108~112,
114~118, 120~126,
128~133, 141, 142, 148,
153, 154, 157, 158, 167,
174, 177, 178, 181, 184,
187, 191, 196, 202~208,
214~299
Ground
-
0
-
V
NOTES