LTE-A Module Series
EP06 Series Hardware Design
EP06_Series_Hardware_Design 27 / 56
"*" means under development.
3.7.3. RESET_N Signal
The RESET_N signal can be used to force a hardware reset of the module. Driving the pin low for
250
–600 ms and then releasing it resets the module. The reset scenario is illustrated in the following
figure.
V
IL
0.5 V
V
IH
1.3 V
VCC
250 ms
Resetting
Module
Status
Running
RESET#
Restart
600 ms
Figure 10: Timing of Resetting Module
3.7.4. WWAN_LED_N Signal
The WWAN_LED_N signal of the module is used to indicate the network status of the module and its
maximum sink current is 40 mA. As shown in 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 WWAN_LED_N
output signal is active low.
AT+CFUN=4
Low Level
AT+CFUN=0
AT+CFUN=1
AT+CFUN=4
Disabled
NOTE
