Led_Wwan# Signal - Quectel BG96 Mini PCIe Hardware Design

3.8.5. LED_WWAN# Signal

The LED_WWAN# signal of BG96 Mini PCIe is used to indicate the network status of the module, and
can absorb the current up to 40mA. According to the following circuit, in order to reduce the current of the
LED, a resistor must be placed in series with the LED. The LED is emitting light when the LED_WWAN#
output signal is active low.
Figure 10: LED_WWAN# Signal Reference Circuit Diagram
There are two indication modes for LED_WWAN# signal to indicate network status, which can be
switched through following AT commands:

AT+QCFG="ledmode",0 (Default setting)

AT+QCFG="ledmode",1
The following tables show the detailed network status indications of the LED_WWAN# signal.
Table 12: Indications of Network Status (AT+QCFG="ledmode",0, Default Setting)
Pin Status
Flicker slowly (200ms High/1800ms Low)
Flicker slowly (1800ms High/200ms Low)
BG96_Mini_PCIe_Hardware_Design
VCC_3V3
≥150ms
PERST#
Module
Running
Status
Figure 9: Timing of Resetting Module
LED_WWAN#
BG96 Mini PCIe Hardware Design
≤460ms
≥2.3V
V
IH
≤0.5V
V
IL
Resetting
Restart
R
Description
Network searching
Idle
LTE Module Series
VCC
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