LTE Module Series
EG25-G Hardware Design
EG25-G_Hardware_Design 58 / 100
Table 21: Working State of the Network Connection Status/Activity Indicator
Pin Name
Logic Level Changes
Network Status
NET_MODE
Always High
Registered on LTE network
Always Low
Others
NET_STATUS
Flicker slowly (200ms High/1800ms Low)
Network searching
Flicker slowly (1800ms High/200ms Low)
Idle
Flicker quickly (125ms High/125ms Low)
Data transfer is ongoing
Always High
Voice calling
A reference circuit is shown in the following figure
.
4.7K
47K
VBAT
2.2K
Module
Network
Indicator
Figure 29: Reference Circuit of the Network Indicator
3.18.
STATUS
The STATUS pin is an open drain output for indicating the module’s operation status. It can be connected
to a GPIO of DTE with a pull-up resistor, or as LED indication circuit as below. When the module is turned
on normally, the STATUS will present the low state. Otherwise, the STATUS will present high-impedance
state.
