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 42 of 143
High-speed SIM/ME interface and the PPS procedure for baud-rate selection is implemented according to
the values proposed by the SIM card/chip.
The VSIM supply output provide internal short circuit protection to limit the start-up current and protect
the SIM from short circuits.
1.8.2 SIM detection interface
The GPIO5 pin of TOBY-L3 series modules can be configured to detect the mechanical / physical presence
of an external SIM card connected to the SIM interface. The pin can sense SIM card presence as intended
to be properly connected to the mechanical switch of a SIM card holder as described in section 2.5:
Low logic level at GPIO5 input pin is recognized as SIM card present
High logic level at GPIO5 input pin is recognized as SIM card not present
☞ Only the GPIO5 can be used as the SIM card detection on TOBY-L3 series modules.
☞ The logic level of the SIM detection GPIO for SIM detection can be configured through the AT command
(See the TOBY-L3 series AT Commands Manual [2], +UGPIOC).
The SIM card detection function provided by GPIO5 pin is an optional feature that can be implemented /
used or not according to the application requirements: an Unsolicited Result Code (URC) is generated each
time that there is a change of status (for more details, see the TOBY-L3 series AT Commands Manual [2],
+UGPIOC, +CIND, +CMER).
The optional function “SIM card hot insertion/removal” can be additionally configured on the GPIO5 pin
by specific AT command (see the TOBY-L3 series AT Commands Manual [2], +UDCONF=50), in order to
enable / disable the SIM interface upon detection of external SIM card physical insertion / removal.
1.9 Data communication interfaces
TOBY-L3 series modules provide the following serial communication interfaces:
USB interface (see section 1.9.1):
o USB High-Speed 2.0 interface, with the module acting as a USB device or host, providing:
ADB interface (Linux console for open CPU applications development and debug)
Modem interface (Dialing up the Network with PPP protocol or Sending AT commands)
AT Interface (Sending AT commands)
GNSS interface (Transport NMEA data information)
NDIS network interface over USB (Ethernet over USB data connection)
Diagnostic interface (Trace log capture, diagnostic purpose)
FW upgrades by means of the +UDWNFILE and +UFWINSTALL AT commands
FW upgrades by means of the Download Tool