Table of Contents
Advertisement
50
GND
51
RESERVED
52
3.3Vaux
NOTES
1)
1.
The digital audio (PCM) function is only supported on Telematics version.
2.
Keep all NC, reserved and unused pins unconnected.
3.3. Operating Modes
The following table briefly outlines the operating modes to be mentioned in the following chapters.
Table 5: Overview of Operating Modes
Mode
Details
Idle
Normal
Operation
Talk/Data
Minimum
AT+CFUN command can set the module to a minimum functionality mode without
Functionality
removing the power supply. In this case, both RF function and (U)SIM card will be
Mode
invalid.
AT+CFUN command or W_DISABLE# pin can set the module to airplane mode. In
Airplane Mode
this case, RF function will be invalid.
In this mode, the current consumption of the module will be reduced to the minimal
Sleep Mode
level. In this mode, the module can still receive paging message, SMS, voice call and
TCP/UDP data from the network normally.
3.4. Power Saving
3.4.1. Sleep Mode
EC25 Mini PCIe is able to reduce its current consumption to a minimum value in sleep mode. There are
three preconditions must be met to make the module enter sleep mode.
EC25_Mini_PCIe_Hardware_Design
GND
1)
PCM_SYNC
VCC_3V3
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.
LTE Standard Module Series
EC25 Mini PCIe Hardware Design
Mini card ground
PCM frame
IO
synchronization
3.0V~3.6V, typically
PI
3.3V DC supply
22 / 79
Advertisement
Table of Contents
