Product Info

LPWA Module Series
BG95-M3 Mini PCIe Hardware Design
BG95-M3_Mini_PCIe_Hardware_Design 28 / 53
V
IL
≤ 0.45 V
V
IH
≥ 2.3 V
VCC_3V3
≥ 2 s
Resetting
Module
Status
Running
PERST#
Restart
≤ 3.8 s
Figure 10: Reset Timing
3.7.4. LED_WWAN#
LED_WWAN# indicates the network status of the module, and it absorbs a current up to 40 mA.
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 powered on when LED_WWAN# is pulled low.
Figure 11: Reference Design of LED_WWAN#
LED_WWAN# supports two indication modes which can be switched through AT+QCFG="ledmode":
 AT+QCFG="ledmode",0 (Default setting)
 AT+QCFG="ledmode",1
The following tables show the detailed network status indications of LED_WWAN#.
Table 13: Indications of Network Status (AT+QCFG="ledmode",0, Default Setting)
Pin Status Description
Flicker slowly (200 ms low/1800 ms high) Network searching
Flicker slowly (1800 ms low/200 ms high) Idle
Flicker quickly (125 ms low/125 ms high) Data transfer is ongoing