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 System description
Page 66 of 188
Module status indication:
The GPIO1 pin of SARA-U2 modules can be configured to indicate module status (power-off mode, i.e.
module switched off, versus idle, active or connected mode, i.e. module switched on), by properly setting
the parameter <gpio_mode> of AT+UGPIOC command to 10.
No GPIO pin is by default configured to provide the “Module status indication”.
The pin configured to provide the “Module status indication” function is set as
o High, when the module is switched on (any operating mode during module normal operation)
o Low, when the module is switched off (power off mode)
SARA-G3 series do not support “Module status indication” function.
Module operating mode indication:
The SIM_DET pin of SARA-U2 modules can be configured to indicate module operating mode status (the
low power idle-mode versus active or connected mode), by properly setting the parameter <gpio_mode> of
AT+UGPIOC command to 11.
No GPIO pin is by default configured to provide the “Module operating mode indication”.
The pin configured to provide the “Module operating mode indication” function is set as
o Output / High, when the module is in active or connected mode
o Output / Low, when the module is in idle-mode (that can be reached if power saving is enabled by
+UPSV AT command: for further details see u-blox AT Commands Manual [3])
SARA-G3 series do not support “Module operating mode indication”.
I
2
S digital audio interface:
The I2S_RXD, I2S_TXD, I2S_CLK, I2S_WA pins of SARA-U2 modules are by default configured as the I
2
S
digital audio interface.
Only these pins of SARA-U2 modules can be configured as the I
2
S digital audio interface, by correctly setting
the parameter <gpio_mode> of AT+UGPIOC command to 12 (default setting).
SARA-G3 series do not support the I
2
S digital audio interface over GPIOs.
General purpose input:
All the GPIOs can be configured as input to sense high or low digital level through AT+UGPIOR command,
setting the parameter <gpio_mode> of AT+UGPIOC command to 1.
The “General purpose input” mode can be provided on more than one pin at a time.
No GPIO pin is by default configured as “General purpose input”.
The pin configured to provide the “General purpose input” function is set as
o Input, to sense high or low digital level by AT+UGPIOR command.
General purpose output:
All the GPIOs can be configured as output to set the high or the low digital level through AT+UGPIOW
command, setting the parameter <gpio_mode> of +UGPIOC AT command to 0.
The “General purpose output” mode can be provided on more than one pin per time.
No GPIO pin is by default configured as “General purpose output”.
The pin configured to provide the “General purpose output” function is set as
o Output / Low, if the parameter <gpio_out_val> of AT+UGPIOW command is set to 0
o Output / High, if the parameter <gpio_out_val> of AT+UGPIOW command is set to 1