LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 18 / 54
Keep all NC, reserved and unused pins unconnected.
3.1. Operating Modes
The following table briefly outlines the operating modes to be mentioned in the following chapters.
Table 5: Overview of Operating Modes
Software is active. The module has registered on the network, and it is
ready to send and receive data.
Network connection is ongoing. In this mode, the power consumption is
decided by network setting and data transfer rate.
Minimum
Functionality
Mode
AT+CFUN command can set the module to a minimum functionality mode without
removing the power supply. In this case, both RF function and (U)SIM card will be
invalid.
AT+CFUN command or W_DISABLE# pin can set the module to airplane mode. In
this case, RF function will be invalid.
In this mode, the current consumption of the module will be reduced to the minimal
level. In this mode, the module can still receive paging message, SMS, voice call and
TCP/UDP data from the network normally.
PCM frame
synchronization
3.0V~3.6V, typically
3.3V DC supply