User's Manual
Table Of Contents
- 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 DDC (I2C) pins
- 4.2.13 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
TOBY-R2 series - Data Sheet
UBX-16005785 - R06 Interfaces
Page 14 of 41
2.5.1.1 Multiplexer protocol
TOBY-R2 series modules include multiplexer functionality as per 3GPP TS 27.010 [10] 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 [6]):
Channel 0: Multiplexer control
Channel 1 – 5: AT commands / data connection
Channel 6: GNSS data tunneling
The GNSS data tunnelling channel is not supported by “02” product versions.
2.5.2 USB interface
TOBY-R2 series modules include a USB High-Speed 2.0 compliant interface with maximum 480 Mb/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 the 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 TOBY-R2 series modules makes available different USB functions 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, CDC-ACM for SAP, and CDC-NCM for Ethernet-over-USB are not
supported by “02” product versions.
The USB interface provides the following set of USB functions:
6 CDC-ACM modem COM ports enumerated as follows:
o USB1: AT and data
o USB2: AT and data
o USB3: AT and data
o USB4: GNSS tunneling
o USB5: SAP (SIM Access Profile)
o USB6: Primary Log (diagnostic purpose)
The user can concurrently use the AT command interface on one CDC, and Packet-Switched / Circuit-Switched
Data communication on another CDC.
For more details regarding USB capabilities, see the TOBY-R2 series System Integration Manual [2].