Datasheet
Table Of Contents
- Document Information
- Contents
- 1 Functional description
- 2 Interfaces
- 3 Pin definition
- 4 Electrical specifications
- 4.1 Absolute maximum rating
- 4.2 Operating conditions
- 4.2.1 Operating temperature range
- 4.2.2 Supply/power pins
- 4.2.3 Current consumption
- 4.2.4 LTE RF characteristics
- 4.2.5 3G RF characteristics
- 4.2.6 2G RF characteristics
- 4.2.7 ANT_DET pin
- 4.2.8 PWR_ON pin
- 4.2.9 RESET_N pin
- 4.2.10 SIM pins
- 4.2.11 USB pins
- 4.2.12 HSIC pins
- 4.2.13 DDC (I2C) pins
- 4.2.14 Generic Digital Interfaces pins
- 5 Mechanical specifications
- 6 Qualification and approvals
- 7 Product handling & soldering
- 8 Default settings
- 9 Labeling and ordering information
- Appendix
- A Glossary
- Related documents
- Revision history
- Contact
LARA-R2 series - Data Sheet
UBX-16005783 - R15 Interfaces Page 15 of 48
UART serial interface can be conveniently configured through AT commands: see the u-blox AT
Commands Manual [1] (+IPR, +ICF, +IFC, &K, \Q, +UPSV AT commands) and LARA-R2 series System
Integration Manual [2].
2.5.1.1 Multiplexer protocol
LARA-R2 series modules include multiplexer functionality as per 3GPP TS 27.010 [9] on the UART
physical link.
This is a data link protocol which uses HDLC-like framing and operates between the module (DCE) and
the application processor (DTE), allowing a number of simultaneous sessions over the physical link
(UART): the user can concurrently use AT interface on one MUX channel and data communication on
another MUX channel.
The following virtual channels are available (for more details, see the Mux Implementation Application
Note [5]):
Channel 0: Multiplexer control
Channel 1 – 5: AT commands / data connection
Channel 6: GNSS data tunneling
☞ GNSS data tunneling is not supported by LARA-R204-02B-00 and LARA-R211-02B-00 product
versions.
2.5.2 USB interface
LARA-R2 series modules include a USB High-Speed 2.0 compliant interface with a maximum
480 Mbit/s data rate according to the Universal Serial Bus Specification Revision 2.0 [15]. The module
itself acts as a USB device and can be connected to any compatible USB host.
The USB interface is available for communication with a host application processor (AT commands,
data communication, FW update by means of the FOAT feature), for FW update by means of the
u-blox EasyFlash tool and for diagnostics.
The USB_D+ / USB_D- lines carry the USB data and signaling. The USB interface is automatically
enabled by an external valid USB VBUS supply voltage (5.0 V typical) applied on the VUSB_DET pin.
The USB interface of LARA-R2 series modules makes several USB functions available with various
capabilities and purposes, such as:
CDC-ACM for AT commands and data communication
CDC-ACM for GNSS tunneling
CDC-ACM for SAP (SIM Access Profile)
CDC-ACM for Diagnostic log
CDC-NCM for Ethernet-over-USB
☞ CDC-ACM for GNSS tunneling is not supported by LARA-R204-02B and LARA-R211-02B product
versions.
☞ CDC-ACM for SAP and CDC-NCM for Ethernet-over-USB are not supported by “02” and “62”
versions.