MeiG_SLM156_Hardware Design Manual
MeiG Smart Technology Co., Ltd
22/63
Extent idle mode
discontinuous receiving
(e-I-DRX)
Power consumption of e-I-DRX is higher than PSM; but compared with
PSM, it raise the accessibility of download to a large extent.
Module and core network negotiate e-I-DRX related parameter through
attach and TAU process. Please refer to chapter 3.5.3 for detail
information.
Minimum functionality
mode
VBAT keep supplying power, use AT+CFUN=0 to let module enter in
minimum functionality mode, at the moment, the receiving and sending
of RF is close. Use AT+CFUN=1to restart receive and send registering
network and let it be in normal functionality mode.
Flight mode
W_DISABLE_N pin can set the module to enter into flight mode. In this
mode RF function will be invalid.
Power down mode
VBAT shuts down in the low power supply mode. In this mode, PMU
stops supplying power to baseband and RF; software is inactive and the
serial interface is not accessible.
Power saving mode
(PSM)
Modules can lower self power consumption through entering PSM. PSM
is similar to power off, but the module is still registered online. After
waken up by PSM, module doesn
’t need reattach and rebuild PDN
connection. Please refer to
Chapter 3.5.2 for detail information.
3.5 Power Saving
3.5.1 Flight Mode
When the module enters into flight mode, the RF function will not work, and all AT commands
correlative with RF function will be inaccessible. You can use the following ways to let the module enter
into flight mode:
Hardware controls flight mode:
W_DISABLE_N pin is defaulted as pull-up, drive W_DISABLE_N to low level, then the module enters
into flight mode.
Software controls flight mode:
This mode can be set through sending AT+CFUN=<fun> command. <fun> parameter can be chosen
from 0,1 and 4.
AT+CFUN=0 : minimum functionality mode, close RF and (U)SIM card;
AT+CFUN=1 : full-function mode (default);
AT+CFUN=4: close RF function (flight mode).
