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3.8. Control and Indication Signals
The following table shows the pin definition of control and indication signals.
Table 11: Pin Definition of Control and Indication Signals
Pin Name
RI
DTR
W_DISABLE#
PERST#
LED_WWAN#
WAKE#
3.8.1. RI Signal
The RI signal can be used to wake up the host. When a URC returns, there will be the following behaviors
on the RI pin after executing AT+QCFG="risignaltype","physical" command.
3.8.2. DTR Signal
The DTR signal is used for sleep mode control. It is pulled up by default. When module is in sleep mode,
driving it to low can wake up the module. For more details about the preconditions for module to enter
sleep mode, please refer to Chapter 3.4.1.
EG25-G_Mini_PCIe_Hardware_Design
Pin No.
I/O
Power Domain
17
DO
3.3 V
31
DI
3.3 V
20
DI
3.3 V
22
DI
3.3 V
42
OC
1
OC
High
Low
Figure 11: RI Behaviors
EG25-G Mini PCIe Hardware Design
Description
Output signal used to wake up the host.
Sleep mode control
Airplane mode control;
Pulled up by default;
Active low.
Fundamental reset signal;
Active low.
LED signal for indicating the network
status of the module;
Active low
Output signal to wake up the host.
120 ms
URC return
LTE Standard Module Series
27 / 54
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