User's Manual
Table Of Contents
- Preface
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.6 System function interfaces
- 1.7 Antenna interface
- 1.8 SIM interface
- 1.9 Serial interfaces
- 1.9.1 Asynchronous serial interface (UART)
- 1.9.1.1 UART features
- 1.9.1.2 UART AT interface configuration
- 1.9.1.3 UART signal behavior
- 1.9.1.4 UART and power-saving
- AT+UPSV=0: power saving disabled, fixed active-mode
- AT+UPSV=1: power saving enabled, cyclic idle/active-mode
- AT+UPSV=2: power saving enabled and controlled by the RTS line
- AT+UPSV=3: power saving enabled and controlled by the DTR line
- Wake up via data reception
- Additional considerations for SARA-U2 modules
- 1.9.1.5 Multiplexer protocol (3GPP 27.010)
- 1.9.2 Auxiliary asynchronous serial interface (UART AUX)
- 1.9.3 USB interface
- 1.9.4 DDC (I2C) interface
- 1.9.1 Asynchronous serial interface (UART)
- 1.10 Audio interface
- 1.11 General Purpose Input/Output (GPIO)
- 1.12 Reserved pins (RSVD)
- 1.13 System features
- 1.13.1 Network indication
- 1.13.2 Antenna detection
- 1.13.3 Jamming detection
- 1.13.4 TCP/IP and UDP/IP
- 1.13.5 FTP
- 1.13.6 HTTP
- 1.13.7 SMTP
- 1.13.8 SSL
- 1.13.9 Dual stack IPv4/IPv6
- 1.13.10 Smart temperature management
- 1.13.11 AssistNow clients and GNSS integration
- 1.13.12 Hybrid positioning and CellLocateTM
- 1.13.13 Firmware upgrade Over AT (FOAT)
- 1.13.14 Firmware upgrade Over The Air (FOTA)
- 1.13.15 In-Band modem (eCall / ERA-GLONASS)
- 1.13.16 SIM Access Profile (SAP)
- 1.13.17 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 Low Drop-Out (LDO) linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable Li-Ion or Li-Pol battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary (disposable) battery
- 2.2.1.6 Additional guidelines for VCC supply circuit design
- 2.2.1.7 Guidelines for external battery charging circuit
- 2.2.1.8 Guidelines for external battery charging and power path management circuit
- 2.2.1.9 Guidelines for VCC supply layout design
- 2.2.1.10 Guidelines for grounding layout design
- 2.2.2 RTC supply (V_BCKP)
- 2.2.3 Interface supply (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interface
- 2.6 Serial interfaces
- 2.6.1 Asynchronous serial interface (UART)
- 2.6.1.1 Guidelines for UART circuit design
- Providing the full RS-232 functionality (using the complete V.24 link)
- Providing the TXD, RXD, RTS, CTS and DTR lines only (not using the complete V.24 link)
- Providing the TXD, RXD, RTS and CTS lines only (not using the complete V.24 link)
- Providing the TXD and RXD lines only (not using the complete V24 link)
- Additional considerations
- 2.6.1.2 Guidelines for UART layout design
- 2.6.1.1 Guidelines for UART circuit design
- 2.6.2 Auxiliary asynchronous serial interface (UART AUX)
- 2.6.3 Universal Serial Bus (USB)
- 2.6.4 DDC (I2C) interface
- 2.6.1 Asynchronous serial interface (UART)
- 2.7 Audio interface
- 2.7.1 Analog audio interface
- 2.7.1.1 Guidelines for microphone and speaker connection circuit design (headset / handset modes)
- 2.7.1.2 Guidelines for microphone and loudspeaker connection circuit design (hands-free mode)
- 2.7.1.3 Guidelines for external analog audio device connection circuit design
- 2.7.1.4 Guidelines for analog audio layout design
- 2.7.2 Digital audio interface
- 2.7.1 Analog audio interface
- 2.8 General Purpose Input/Output (GPIO)
- 2.9 Reserved pins (RSVD)
- 2.10 Module placement
- 2.11 Module footprint and paste mask
- 2.12 Thermal guidelines
- 2.13 ESD guidelines
- 2.14 SARA-G350 ATEX integration in explosive atmospheres applications
- 2.15 Schematic for SARA-G3 and SARA-U2 series module integration
- 2.16 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- Appendix
- A Migration between LISA and SARA-G3 modules
- A.1 Overview
- A.2 Checklist for migration
- A.3 Software migration
- A.4 Hardware migration
- B Migration between SARA-G3 and SARA-U2
- C Glossary
- Related documents
- Revision history
- Contact
SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R08 Objective Specification Appendix
Page 172 of 188
A.4.3 Antenna interface
RF interface for Tx/Rx antenna
The same compatible external circuit can be implemented for SARA and LISA series ANT pin even if there are
some differences in the operating bands frequency ranges, as summarized in Figure 92.
VV II II
850
900
850
800 850 900 950
900 1800
1900 1900
1800
1700 1750 1800 1850 1900 1950 2000
2050 2100 2150 2200
824 960 1710 1990
LISA-U100
LISA-U120
LISA-U260
LISA-U200
LISA-U230
VV II II
850
900
850
800 850 900 950
900 1800
1900 1900
1800
1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200
IIVIVI
VIIIVIII IV IV
824 960 1710 2170
850
900
850
800 850 900 950
900 1800
1900 1900
1800
1700 1750 1800 1850 1900 1950 2000
2050 2100 2150 2200
IIVIIIVIII
824 960 1710 2170
LISA-U110
LISA-U130
LISA-U270
850
900
850
800 850 900 950
900 1800
1900 1900
1800
1700 1750 1800 1850 1900 1950 2000
2050 2100 2150 2200
824 960 1710 1990
SARA-G310
SARA-G350
900
800 850 900 950
900 1800 1800
1700 1750 1800 1850 1900 1950 2000
2050 2100 2150 2200
880 960 1710 1880
SARA-G300
SARA-G340
800800
800 850 900 950
1900 1900
1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200
824 894 1850 1990
LISA-C200
Figure 92: Summary of operating bands frequency ranges among modules
An external circuit can be implemented on the application device integrating SARA-U2 and LISA-U2 modules to
satisfy ESD immunity test requirements at the antenna port, as described in sections 2.13 and 2.4, and in the
LISA-U Series System Integration Manual [8]. The same external circuit is not required for SARA-G3, LISA-U1 and
LISA-C2 modules.
RF interface for Rx diversity antenna
Only the LISA-U230 modules provide the RF input for Rx diversity antenna (ANT_DIV).
SARA-G3, LISA-C2, LISA-U1 and the other LISA-U2 series modules do not support Rx diversity.
Antenna detection interface
An external application circuit can be implemented on the application device integrating SARA-G340 /
SARA-G350 modules to provide antenna detection functionality, with a proper connection between the
ANT_DET pin and the ANT pin, as described in section 2.4.2.
LISA-U modules are equipped with internal circuit for antenna detection support.
SARA-G300, SARA-G310 and LISA-C2 series modules do not support antenna detection.