Product Info

LTE Module Series
EG91 Hardware Design
EG91_Hardware_Design 52 / 93
The following tables describe the pin definition and logic level changes of NETLIGHT in different network
status.
Table 16: Pin Definition of Network StatusIndicator
Pin Name Pin No. I/O Description Comment
NETLIGHT 21 DO Indicate the module’snetwork activity status 1.8V power domain
Table 17: Working State of Network Status Indicator
Pin Name Logic Level Changes Network Status
NETLIGHT
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.
Figure 26: Reference Circuit of Network Status Indicator
3.15. STATUS
The STATUS pin is set as the module’s operation status indicator. It will output high level when the
module is powered on. The following table describes the pin definition of STATUS.