Integration Manual
Table Of Contents
- Document Information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Power management
- 1.6 System functions
- 1.7 RF connection
- 1.8 (U)SIM interface
- 1.9 Serial communication
- 1.9.1 Serial interfaces configuration
- 1.9.2 Asynchronous serial interface (UART)
- 1.9.2.1 UART features
- 1.9.2.2 UART signal behavior
- 1.9.2.3 UART and power-saving
- 1.9.2.4 UART application circuits
- 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
- 1.9.3 USB interface
- 1.9.4 SPI interface
- 1.9.5 MUX protocol (3GPP TS 27.010)
- 1.10 DDC (I2C) interface
- 1.11 Audio Interface
- 1.12 General Purpose Input/Output (GPIO)
- 1.13 Reserved pins (RSVD)
- 1.14 Schematic for LISA-U2 module integration
- 1.15 Approvals
- 1.15.1 European Conformance CE mark
- 1.15.2 US Federal Communications Commission notice
- 1.15.3 Innovation, Science, Economic Development Canada notice
- 1.15.4 Australian Regulatory Compliance Mark
- 1.15.5 ICASA Certification
- 1.15.6 KCC Certification
- 1.15.7 ANATEL Certification
- 1.15.8 CCC Certification
- 1.15.9 Giteki Certification
- 2 Design-In
- 3 Features description
- 3.1 Network indication
- 3.2 Antenna detection
- 3.3 Jamming Detection
- 3.4 TCP/IP and UDP/IP
- 3.5 FTP
- 3.6 HTTP
- 3.7 SSL/TLS
- 3.8 Dual stack IPv4/IPv6
- 3.9 AssistNow clients and GNSS integration
- 3.10 Hybrid positioning and CellLocate®
- 3.11 Control Plane Aiding / Location Services (LCS)
- 3.12 Firmware update Over AT (FOAT)
- 3.13 Firmware update Over the Air (FOTA)
- 3.14 In-Band modem (eCall / ERA-GLONASS)
- 3.15 SIM Access Profile (SAP)
- 3.16 Smart Temperature Management
- 3.17 Bearer Independent Protocol
- 3.18 Multi-Level Precedence and Pre-emption Service
- 3.19 Network Friendly Mode
- 3.20 Power saving
- 4 Handling and soldering
- 5 Product Testing
- Appendix
- A Migration from LISA-U1 to LISA-U2 series
- A.1 Checklist for migration
- A.2 Software migration
- A.2.1 Software migration from LISA-U1 series to LISA-U2 series modules
- A.3 Hardware migration
- A.3.1 Hardware migration from LISA-U1 series to LISA-U2 series modules
- A.3.2 Pin-out comparison LISA-U1 series vs. LISA-U2 series
- A.3.3 Layout comparison LISA-U1 series vs. LISA-U2 series
- B Glossary
- Related documents
- Revision history
- Contact
LISA-U2 series - System Integration Manual
UBX-13001118 - R25 System description Page 53 of 182
1.9 Serial communication
LISA-U2 modules provide the following serial communication interfaces where the AT command
interface and Packet-Switched / Circuit-Switched Data communication are concurrently available:
One asynchronous serial interface (UART) that provides complete RS-232 functionality
conforming to the ITU-T V.24 Recommendation [3], with a limited data rate
One Inter Processor Communication (IPC) interface that includes a synchronous SPI-compatible
interface, with a maximum data rate of 26 Mbit/s
One high-speed USB 2.0 compliant interface, with a maximum data rate of 480 Mbit/s.
The LISA-U2 modules are designed to operate as an HSPA cellular modem, which represents a data
circuit-terminating equipment (DCE) as described by the ITU-T V.24 Recommendation [3]. A
customer application processor connected to the module through one of the interfaces represents
the data terminal equipment (DTE).
All the interfaces listed above are controlled and operated with:
AT commands according to 3GPP TS 27.007 [4]
AT commands according to 3GPP TS 27.005 [5]
AT commands according to 3GPP TS 27.010 [6]
u-blox AT commands
☞ For the complete list of supported AT commands and their syntax, see the u-blox AT Commands
Manual [2].
The module firmware can be upgraded over all the serial interfaces listed above by means of an AT
command (for more details, see section 3.1 as well as the u-blox AT Commands Manual [2], +UFWUPD
command).
The module firmware can be upgraded over the following serial interfaces using the u-blox EasyFlash
tool:
The UART interface (only the RxD and TxD lines are needed)
The USB interface (all the provided lines VUSB_DET, USB_D+ and USB_D- are needed)
☞ To directly enable PC (or similar) connection to the module for firmware upgrade using the u-blox
EasyFlash tool, provide direct access on the application board to the VUSB_DET, USB_D+ and
USB_D- lines of the module (or to the RxD and TxD lines). Also provide access to the PWR_ON or
the RESET_N pins, or enable the DC supply connected to the VCC pin to start the module firmware
upgrade (see the Firmware Update Application Note [16]).
The following sub-sections describe the serial interfaces configuration and provide a detailed
description of each interface for the application circuits.