Product Info

LTE Module Series
EG61-NA Hardware Design
EG61-NA_Hardware_Design 27 / 77
3.4. Operating Modes
The table below briefly summarizes the various operating modes referred in the following chapters.
Table 5: Overview of Operating Modes
Mode Details
Normal
Operation
Idle
Software is active. The module hasregistered on network, and it is ready
to send and receive data.
Talk/Data
Network connection is ongoing. In this mode, the power consumption is
decided by network settingand 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.
Airplane
Mode
AT+CFUN command or W_DISABLE# pin can set the module to airplane mode. In this
case, RF function will be invalid.
Sleep Mode
In this mode, the current consumption of the module will be reduced to the minimal level.
During this mode, the module can still receive paging message, SMS, voice call and
TCP/UDP data from the network normally.
Power Down
Mode
In this mode, the power management unit shuts down the power supply. Software is not
active. The serial interface is not accessible. Operating voltage (connected to VBAT_RF
and VBAT_BB) remains applied.
3.5. Power Saving
3.5.1. Sleep Mode
EG61-NA is able to reduce its current consumption to a minimum value during the sleep mode. The
following sectionsdescribe the power saving procedures of EG61-NA module.
3.5.1.1. UART Application
If the host communicates with the module via UART interface, the following preconditions can let the
module enter into sleep mode.
 Execute AT+QSCLK=1commandto enable sleep mode.
 Drive DTR to high level.
The following figure shows the connection between the module and the host.