Integration Manual
Table Of Contents
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.5.1 Module supply input (VCC)
- 1.5.1.1 VCC supply requirements
- 1.5.1.2 VCC current consumption in 2G connected mode
- 1.5.1.3 VCC current consumption in 3G connected mode
- 1.5.1.4 VCC current consumption in LTE connected mode
- 1.5.1.5 VCC current consumption in cyclic low power idle mode / active mode
- 1.5.1.6 VCC current consumption in fixed active mode
- 1.5.2 Generic digital interfaces supply output (V_INT)
- 1.5.1 Module supply input (VCC)
- 1.6 System function interfaces
- 1.7 Antenna interfaces
- 1.8 SIM interfaces
- 1.9 Data communication interfaces
- 1.10 eMMC interface
- 1.11 Digital Audio interfaces
- 1.12 ADC interfaces
- 1.13 General Purpose Input/Output
- 1.14 Reserved pins (RSVD)
- 1.15 System features
- 1.15.1 Network indication
- 1.15.2 Jamming detection
- 1.15.3 IP modes of operation
- 1.15.4 Dual stack IPv4 and IPv6
- 1.15.5 Embedded TCP/IP and UDP/IP
- 1.15.6 Embedded FTP and FTPS
- 1.15.7 Embedded HTTP and HTTPS
- 1.15.8 SSL and TLS
- 1.15.9 Firmware update Over AT (FOAT)
- 1.15.10 Firmware update Over The Air (FOTA)
- 1.15.11 Power Saving
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC)
- 2.2.1.1 General guidelines for VCC supply circuit selection and design
- 2.2.1.2 Guidelines for VCC supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC supply circuit design using a LDO linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary battery
- 2.2.1.6 Additional guidelines for VCC supply circuit design
- 2.2.1.7 Guidelines for the external battery charging circuit
- 2.2.1.8 Guidelines for external charging and power path management circuit
- 2.2.1.9 Guidelines for removing VCC supply
- 2.2.1.10 Guidelines for VCC supply layout design
- 2.2.1.11 Guidelines for grounding layout design
- 2.2.2 Generic digital interfaces supply output (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interfaces
- 2.6 Data communication interfaces
- 2.7 eMMC interface
- 2.8 Digital Audio interface
- 2.9 ADC interfaces
- 2.10 General Purpose Input/Output
- 2.11 Reserved pins (RSVD)
- 2.12 Module placement
- 2.13 Module footprint and paste mask
- 2.14 Thermal guidelines
- 2.15 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- 6 FCC Notes
- Appendix
- Glossary
- Related documents
- Revision history
- Contact
TOBY-L3 series - System Integration Manual
TSD-19090601 - R13 System Integration Manual Page 23 of 143
The modules switch from active mode to download mode before
starting the firmware downloading procedure, once the firmware
downloading is finished, the system reboot and enter booting mode.
Sleep-Mode
Module is switched on with application
interfaces temporarily disabled or
suspended: the module is temporarily not
ready to communicate with an external
device by means of the application
interfaces as configured to reduce the
current consumption.
The module enters the low power idle-
mode whenever possible if power saving
is enabled by AT+UPSV command.
Power saving configuration is not
enabled by default: it can be enabled by
the AT+UPSV command (see TOBY-L3
series AT commands manual [2]).
The modules automatically switch from active-mode to low power
sleep-mode whenever possible if power saving is enabled.
The module wakes up from low power idle-mode to active-mode in
the following events:
Automatic periodic monitoring of the paging channel for the
reception of the paging block sent by the base station according
to network conditions
The connected USB host forces a remote wakeup of the module
as USB device.
Automatic periodic enable of the UART interface to receive / send
data, with AT+UPSV=1
Data received on UART interface, with HW flow control disabled
and power saving enabled
The module pin that configured as Wake-up function is triggered
by the external device
The SIM card hot insertion or removal function is enabled and the
SIM hot plug event is triggered
The GNSS data ready pin trigger the interruption
Active-Mode
Modules is switched on with application
interfaces enabled or not suspended: the
module is ready to communicate with an
external device by means of the
application interfaces unless power
saving configuration is enabled by
AT+UPSV command (see TOBY-L3 series
AT commands manual [2]).
If power saving configuration is enabled by the AT+UPSV command,
the module automatically switches from active to sleep-mode
whenever possible and the module wakes up from sleep-mode to
active-mode in the events listed above (see sleep-mode to active-
mode transition description above).
When a LTE/3G/2G data connection is initiated and connected, the
module switches from active to connected-mode.
Connected-Mode
LTE/3G/2G data connection or incoming/
outgoing voice call is in progress. The
module is prepared to accept data
signals from an external device unless
power saving configuration is enabled by
AT+UPSV command (see TOBY-L3 series
AT commands manual [2]).
When a data connection is initiated, the module enters connected-
mode from active-mode.
Connected-mode is suspended if LTE/3G/2G data connection and
the voice call are not in progress, due to connected discontinuous
reception and fast dormancy capabilities of the module and
according to network environment settings and scenario. In such
case, the module automatically switches from connected to active
mode and then, if power saving configuration is enabled by the
AT+UPSV command, the module automatically switches to idle-
mode whenever possible. Vice-versa, the module wakes up from idle
to active mode and then connected mode if LTE/3G/2G data
connection is necessary.
When a data connection is terminated, the module returns to the
active-mode.
Table 6: TOBY-L3 series modules operating modes description
Figure 2 Describes the transition between the different operating modes.