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 59 of 143
The +UFWUPD AT command triggers a reboot followed by the upgrade procedure at specified a baud
rate.
A special boot loader on the module performs firmware installation, security verifications and module
reboot.
Firmware authenticity verification is performed via a security signature during the download. The
firmware is then installed, overwriting the current version. In case of power loss during this phase, the
boot loader detects a fault at the next wake-up, and restarts the firmware downloaded. After completing
the upgrade, the module is reset again and wakes-up in normal boot.
For more details about Firmware update Over AT procedure, see the Firmware update application not and
the TOBY-L3 series AT commands manual [2], +UFWUPD AT command.
1.15.10 Firmware update Over The Air (FOTA)
This feature allows upgrading the module firmware over the LTE/3G/2G air interface.
In order to reduce the amount of data to be transmitted over the air, the implemented FOTA feature
requires downloading only a “delta file” instead of the full firmware. The delta file contains only the
differences between the two firmware versions (old and new), and is compressed. The firmware update
procedure can be triggered using dedicated AT command with the delta file stored in the module file
system via over the air FTP.
For more details about Firmware update Over The Air procedure, see the firmware update application note
and the TOBY-L3 series AT commands manual [2], +UFWINSTALL AT command.
1.15.11 Power Saving
The power saving configuration is by default disabled, but is can be enabled using the AT+UPSV command
(for the detail of the AT+UPSV command, see the TOBY-L3 series AT commands manual [2]).
When power saving is enabled, the module automatically enters the low power idle-mode whenever
possible, reducing current consumption (See the TOBY-L3 series data sheet [1]).
During the low power idle-mode, the module is not ready to communicate with an external device, as it is
configured to reduce power consumption. 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