Quectel EG91 Series User Manual

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design 52 / 106
3.14. Network Status Indication
The module provides one network indication pin: NETLIGHT. The pin is used to drive a network status
indication LED.
The following tables describe the pin definition and logic level changes of NETLIGHT in different network
status.
Table 16: Pin Definition of Network Status Indicator
Pin Name Pin No. I/O Description Comment
NETLIGHT 21 DO Indicate the module’s network 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

Quectel EG91 Series Specifications

General

Brand	Quectel
Model	EG91 Series
Category	Control Unit
Language	English