LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 53 / 90
3.15. Network Status Indication
The network indication pins can be used to drive network status indication LEDs. The module provides
two pins which are NET_MODE and NET_STATUS for network status indication. The following tables
describe pin definition and logic level changes in different network status.
Table 21: Pin Definition of Network Connection Status/Activity 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
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.
Table 22: Working State of Network Connection Status/Activity Indication
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
A reference circuit is shown in the following figure
.
