Integration Manual

TSD-19090601 - R15 Contents Page 20 of 143
1.4 Operating modes
TOBY-L3 series modules have several operating modes. The operating modes are defined in Table 5 and
described in detail in Table 6, provding general guidelines for operation.
General Status
Operating Mode
Definition
Power-down
Not-Powered Mode
VCC supply not present and the module is switched off.
Power-Off mode
VCC supply within operating range and modules is switched off.
Booting Up
Booting-Mode
The module automatically enters booting-mode from power-off
mode when it switched on
Download
Download-Mode
The modules in the download mode are ready to download the
firmware and recovery the system.
Normal Operation
Sleep-Mode
The interfaces of the module are temporarily disabled or suspended
in this mode, the system current consumption is reduced to save
power.
Active-Mode
The interfaces of the modules are enabled or not suspended in this
mode.
Connected-Mode
The module have registered the wireless network, the 4G/3G/2G data
connection or incoming/outgoing voice call is in progress.
Table 5: TOBY-L3 series modules operating modes definition
Operating Mode
Description
Transition between operating modes
Not-Powered Mode
Module is switched off.
Application interfaces are not accessible.
When VCC supply is removed, the module enters not-powered mode.
When in not-powered mode, TOBY-L3 series modules enter Power-
Off mode after applying VCC supply.
Power-Off Mode
Module is switched off: normal shutdown
by an appropriate power-off event.
Application interfaces are not accessible.
When the module is switched off by an appropriate power-off event,
the module enters power-off mode from active-mode.
When in power-off mode, TOBY-L3 series modules can be switched
on by PWR_ON and enter the booting mode. If the pin TX2 is pull
up to high level when before switch on, the module enter the
download mode.
When in power-off mode, TOBY-L3 series enter the not-powered
mode after removing VCC supply.
Booting-Mode
Module is booting up with application
interfaces temporarily disabled or not
used as the system is loading and not
ready.
The modules automatically switch from booting-mode to active-
mode when the system booting up finished and successful.
If the booting procedure failed, the modules enter the download
mode to recovery the system.
Download-Mode
Module is ready for download
The module automatically enters the emergency download mode
when the pin TX2 is pull up to the high level before switching on or
the booting procedure is failed or in recovery situation.