23
/
50
Table 9: Pin Definition of Control Signals
“*” means under development.
3.7.1.
RESET_N Signal
The RESET_N signal can be used to force a hardware reset on the card. Customers can reset the
module by driving the RESET_N to a low level voltage with the time frame of TBD1~TBD2ms and then
releasing it. The reset scenario is illustrated in the following figure.
V
IL
≤
0.5V
V
IH
≥
1.3V
VCC
≥
TBD1
Resetting
Module
Status
Running
RESET_N
Restart
TBD2
Figure 9: Timing of Resetting Module
3.7.2.
WWAN_LED_N Signal
The WWAN_LED_N signal of EP06 module is used to indicate the network status of the module, which
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 WWAN_LED_N
output signal is active low.
Pin No. Pin Name
I/O
Power
Domain
Description
Comment
1
WAKE_N*
OC
Output signal, used to wake up
the host.
20
W_DISABLE_N* DI
1.8V
Disable wireless
communications
Active low.
22
RESET_N
DI
1.8V
Functional reset to the Module Active low.
42
WWAN_LED_N
OC
LED signal for indicating the
state of the module.
Active-low.
NOTE
