LTE Standard Module Series
EG25-GL_Hardware_Design 57 / 96
Table 20: Pin Definition of Network Connection Status/Activity Indication
Table 21: Working State of Network Connection Status/Activity Indication
A reference circuit is shown in the following figure
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4.7K
47K
VBAT
2.2K
Module
Network
Indicator
Figure 29: Reference Circuit of the Network Indication
Pin Name
Pin No.
I/O
Description
Comment
NET_MODE
5
DO
Indicate the
module’s network
registration mode
1.8 V power domain. Cannot be
pulled up before startup.
If unused, keep it open.
NET_STATUS 6
DO
Indicate the
module’s network
activity status
1.8 V power domain.
If unused, keep it open.
Pin Name
Logic Level Changes
Network Status
NET_MODE
Always High
Registered on LTE network
Always Low
Others
NET_STATUS
Flicker slowly (200 ms High/1800 ms Low)
Network searching
Flicker slowly (1800 ms High/200 ms Low)
Idle
Flicker quickly (125 ms High/125 ms Low)
Data transfer is ongoing
Always High
Voice calling
