Product Info

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design 34 / 106
Please pay attention to the level match shown in dotted line between the module and the host. Please
refer to document [1] for more details about EG91 series module power management application.
3.5.2. Airplane Mode
When the module enters airplane mode, the RF function will be disabled, and all AT commands related to
it will be inaccessible. This mode can be set via the following ways.
Hardware:
The W_DISABLE# pin is pulled up by default. Driving it to low level will let the module enter airplane
mode.
Software:
AT+CFUN=<fun> command provides the choice of the functionality level through setting <fun> as 0, 1 or
4.
 AT+CFUN=0: Minimum functionality mode. Both (U)SIM and RF functions are disabled.
 AT+CFUN=1: Full functionality mode (by default).
 AT+CFUN=4: Airplane mode. RF function is disabled.
1. Airplane mode control via W_DISABLE# 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.
3.6. Power Supply
3.6.1. Power Supply Pins
EG91 series module provides four VBAT pins for connection with an external power supply. There are two
separate voltage domains for VBAT.
 Two VBAT_RF pins for module’s RF part.
 Two VBAT_BB pins for module’s baseband part.
The following table shows the details of VBAT pins and ground pins.
NOTE
NOTES