Abstract
Technical data sheet describing TOBY-R2 series multi-mode cellular
modules. The modules are a cost efficient and performance
optimized LTE Cat 1 / 3G / 2G multi-mode solution covering up to
five LTE bands, up to four 3G UMTS/HSPA bands, and up to four 2G
GSM/EDGE bands in the compact TOBY form factor.
www.u-blox.com
UBX-16005785 - R06
TOBY-R2 series
LTE Cat 1 / HSPA / EGPRS modules
Data Sheet
TOBY-R2 series - Data Sheet
Document Information
Title
TOBY-R2 series
Subtitle
LTE Cat 1 / HSPA / EGPRS modules
Document type
Data Sheet
Document number
UBX-16005785
Revision and date
R06
22-Dec-2016
Disclosure restriction
Product Status
Corresponding content status
Functional Sample
Draft
For functional testing. Revised and supplementary data will be published later.
In Development /
Prototype
Objective Specification
Target values. Revised and supplementary data will be published later.
Engineering Sample
Advance Information
Data based on early testing. Revised and supplementary data will be published later.
Initial Production
Early Prod. Information
Data from product verification. Revised and supplementary data may be published later.
Mass Production /
End of Life
Production Information
Final product specification.
Name
Type number
Modem version
Application version
PCN reference
Product status
TOBY-R200
TOBY-R200-02B-00
30.24
A01.02
UBX-16030126
Engineering Sample
TOBY-R202
TOBY-R202-02B-00
30.24
A01.02
UBX-16030126
Engineering Sample
This document applies to the following products:
u-blox reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein
may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this
document or any part thereof without the express permission of u-blox is strictly prohibited.
The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either
express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by u-blox at any time. For most recent documents, please visit
www.u-blox.com. Copyright © 2017, u-blox AG.
u-blox® is a registered trademark of u-blox Holding AG in the EU and other countries.
UBX-16005785 - R06
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TOBY-R2 series - Data Sheet
Contents
Contents .............................................................................................................................. 3
1 Functional description .................................................................................................. 5
1.1 Overview .............................................................................................................................................. 5
1.2 Product features ................................................................................................................................... 5
1.3 Block diagram ....................................................................................................................................... 6
1.4 Product description ............................................................................................................................... 7
1.5 AT command support ........................................................................................................................... 8
1.6 Supported features ............................................................................................................................... 8
2 Interfaces .................................................................................................................... 10
2.1 Power management ........................................................................................................................... 10
2.1.1 Module supply input (VCC) ......................................................................................................... 10
2.1.2 RTC supply input / output (V_BCKP) ............................................................................................ 10
2.1.3 Generic digital interfaces supply output (V_INT) ........................................................................... 10
2.2 Antenna interfaces ............................................................................................................................. 10
2.2.1 Antenna RF interfaces ................................................................................................................. 10
2.2.2 Antenna detection ...................................................................................................................... 10
2.3 System functions ................................................................................................................................ 11
2.3.1 Module power-on ....................................................................................................................... 11
2.3.2 Module power-off ....................................................................................................................... 11
2.3.3 Module reset ............................................................................................................................... 12
2.3.4 Module / host configuration selection ......................................................................................... 12
2.4 SIM ..................................................................................................................................................... 12
2.4.1 SIM interface ............................................................................................................................... 12
2.4.2 SIM detection .............................................................................................................................. 12
2.5 Serial communication ......................................................................................................................... 13
2.5.1 UART interface ............................................................................................................................ 13
2.5.2 USB interface............................................................................................................................... 14
2.5.3 DDC (I2C) interface ...................................................................................................................... 15
2.5.4 SDIO interface ............................................................................................................................. 15
2.6 Audio ................................................................................................................................................. 15
2.7 Clock output ...................................................................................................................................... 15
2.8 GPIO ................................................................................................................................................... 16
3 Pin definition .............................................................................................................. 17
3.1 Pin assignment ................................................................................................................................... 17
4 Electrical specifications .............................................................................................. 22
4.1 Absolute maximum rating .................................................................................................................. 22
4.1.1 Maximum ESD ............................................................................................................................. 22
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TOBY-R2 series - Data Sheet
4.2 Operating conditions .......................................................................................................................... 23
4.2.1 Operating temperature range ...................................................................................................... 23
4.2.2 Supply/power pins ....................................................................................................................... 23
4.2.3 Current consumption .................................................................................................................. 24
4.2.4 LTE RF characteristics ................................................................................................................... 25
4.2.5 3G RF characteristics ................................................................................................................... 26
4.2.6 2G RF characteristics ................................................................................................................... 27
4.2.7 ANT_DET pin ............................................................................................................................... 27
4.2.8 PWR_ON pin ............................................................................................................................... 28
4.2.9 RESET_N pin ................................................................................................................................ 28
4.2.10 SIM pins ...................................................................................................................................... 28
4.2.11 USB pins ...................................................................................................................................... 29
4.2.12 DDC (I2C) pins.............................................................................................................................. 29
4.2.13 Generic Digital Interfaces pins ..................................................................................................... 30
5 Mechanical specifications .......................................................................................... 31
6 Qualification and approvals ...................................................................................... 32
6.1 Reliability tests .................................................................................................................................... 32
6.2 Approvals ........................................................................................................................................... 32
7 Product handling & soldering .................................................................................... 33
7.1 Packaging ........................................................................................................................................... 33
7.1.1 Reels ........................................................................................................................................... 33
7.1.2 Tapes .......................................................................................................................................... 34
7.2 Moisture Sensitivity Levels ................................................................................................................... 35
7.3 Reflow soldering ................................................................................................................................. 35
7.4 ESD precautions .................................................................................................................................. 35
8 Default settings .......................................................................................................... 36
9 Labeling and ordering information ........................................................................... 37
9.1 Product labeling .................................................................................................................................. 37
9.2 Explanation of codes........................................................................................................................... 37
9.3 Ordering information .......................................................................................................................... 38
Appendix .......................................................................................................................... 39
A Glossary ...................................................................................................................... 39
Related documents........................................................................................................... 40
Revision history ................................................................................................................ 40
Contact .............................................................................................................................. 41
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TOBY-R2 series - Data Sheet
Model
Region
Radio Access Technology
Positioning
Interfaces
Audio
Features
Grade
LTE Bands
1
UMTS Bands
GSM Bands
GNSS via modem
AssistNow Software
CellLocate
®
UART
USB 2.0
SDIO *
DDC (I
2
C)
GPIOs
Analog audio
Digital audio
Network indication
VoLTE
Antenna supervisor
Rx Diversity
Jamming detection
Embedded TCP/UDP stack
Embedded HTTP,FTP,SSL
FOTA
Dual stack IPv4/IPv6
Standard
Professional
Automotive
TOBY-R200
North
America
2,4,
5,12
850,900,
1900,2100
Quad
□ □ □
1 1 1 1 9
● ● ● ● ● □ ● ● ●
●
TOBY-R202
North
America
2,4,
5,12
850,1900
□ □ □
1 1 1 1 9
● ● ● ● ● □ ● ● ●
●
□ = Available in future firmware
* = HW ready
1 Functional description
1.1 Overview
The TOBY-R2 series comprises LTE Cat 1 / 3G / 2G multi-mode modules in the small TOBY LGA form-factor
(35.6 x 24.8 mm) that are easy to integrate in compact designs.
TOBY-R2 series modules support up to five LTE bands, up to four 3G UMTS/HSPA bands and up to four 2G
GSM/(E)GPRS bands for voice and/or data transmission.
TOBY-R2 series modules are form-factor compatible with u-blox SARA, LISA and LARA cellular module families
and are pin-to-pin compatible with u-blox TOBY-L cellular module families: this facilitates easy migration from
the u-blox GSM/GPRS, CDMA, UMTS/HSPA, and LTE high data rate modules, maximizes the investments of
customers, simplifies logistics, and enables very short time-to-market.
The modules are ideal for applications that are transitioning to LTE from 2G and 3G, due to the long term
availability and scalability of LTE networks.
With a range of interface options and an integrated IP stack, the modules are designed to support a wide range
of data-centric applications. The unique combination of performance and flexibility make these modules ideally
suited for medium speed M2M applications, such as smart energy gateways, remote access video cameras,
digital signage, telehealth and telematics.
TOBY-R2 series modules support Voice over LTE (VoLTE) and voice service over 3G (CSFB) for applications that
require voice, such as security and surveillance systems.
1.2 Product features
Table 1: TOBY-R2 series main features summary
1
LTE band 12 is a superset that includes band 17
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1.3 Block diagram
Cellular
Base-band
processor
Memory
Power Management Unit
26 MHz
32.768 kHz
ANT1
RF
transceiver
ANT2
V_INT (I/O)
V_BCKP (RTC)
VCC (Supply)
SIM
USB
GPIO
Power On
External Reset
PAs
LNAs Filters
Filters
Duplexer
Filters
PAs
LNAs Filters
Filters
Duplexer
Filters
LNAs FiltersFilters
LNAs FiltersFilters
Switch
Switch
DDC(I2C)
SDIO
UART
Digital audio (I2S)
ANT_DET
Host Select
TOBY-R2 series - Data Sheet
Figure 1: TOBY-R2 series block diagram
TOBY-R200-02B and TOBY-R202-02B modules, i.e. the “02” product versions, do not support the
following interfaces, which can be left unconnected and should not be driven by external devices:
o SDIO interface
o HOST_SELECTx pins
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TOBY-R2 series - Data Sheet
4G LTE
3G UMTS/HSDPA/HSUPA
2G GSM/GPRS/EDGE
3GPP Release 9
Long Term Evolution (LTE)
Evolved Uni.Terrestrial Radio Access (E-UTRA)
Frequency Division Duplex (FDD)
DL Rx Diversity
3GPP Release 9
High Speed Packet Access (HSPA)
UMTS Terrestrial Radio Access (UTRA)
Frequency Division Duplex (FDD)
DL Enhanced Rx Performance
3GPP Release 9
Enhanced Data rate GSM Evolution (EDGE)
GSM EGPRS Radio Access (GERA)
Time Division Multiple Access (TDMA)
DL Advanced Rx Performance
Band support2:
TOBY-R200:
Band 12 (700 MHz)
3
Band 5 (850 MHz)
Band 4 (1700 MHz)
Band 2 (1900 MHz)
TOBY-R202:
Band 12 (700 MHz)
3
Band 5 (850 MHz)
Band 4 (1700 MHz)
Band 2 (1900 MHz)
Band support:
TOBY-R200:
Band 5 (850 MHz)
Band 8 (900 MHz)
Band 2 (1900 MHz)
Band 1 (2100 MHz)
TOBY-R202:
Band 5 (850 MHz)
Band 2 (1900 MHz)
Band support:
TOBY-R200:
GSM 850 MHz
E-GSM 900 MHz
DCS 1800 MHz
PCS 1900 MHz
LTE Power Class
Class 3 (23 dBm)
UMTS/HSDPA/HSUPA Power Class
Class 3 (24 dBm)
GSM/GPRS (GMSK) Power Class
Class 4 (33 dBm) for GSM/E-GSM band
Class 1 (30 dBm) for DCS/PCS band
EDGE (8-PSK) Power Class
Class E2 (27 dBm) for GSM/E-GSM band
Class E2 (26 dBm) for DCS/PCS band
Data rate
LTE category 1:
up to 10.3 Mb/s DL, 5.2 Mb/s UL
Data rate
HSDPA category 8:
up to 7.2 Mb/s DL
HSUPA category 6:
up to 5.76 Mb/s UL
Data rate4
GPRS multi-slot class 12
5
, CS1-CS4,
up to 85.6 kb/s DL/UL
EDGE multi-slot class 12
5
, MCS1-MCS9,
up to 236.8 kb/s DL/UL
1.4 Product description
TOBY-R2 modules provide 4G LTE Cat 1, 3G UMTS/DC-HSPA+, 2G GSM/(EGPRS) multi-mode technology:
TOBY-R200 is designed for worldwide operation, and primarily in North America (on AT&T network)
TOBY-R202 is designed primarily for operation in North America (on AT&T network)
Table 2: TOBY-R2 series LTE and 3G characteristics
TOBY-R2 modules provide Voice over LTE (VoLTE) as well as Circuit-Switched-Fall-Back (CSFB) audio capability.
2
TOBY-R2 series modules support all the E-UTRA channel bandwidths for each operating band according to 3GPP TS 36.521-1 [11]:
Band 12: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz
Band 5: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz
Band 4: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz
Band 2: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz
3
LTE band 12 is a superset that includes band 17
4
GPRS/EDGE multi-slot class determines the number of timeslots available for upload and download and thus the speed at which data can
be transmitted and received, with higher classes typically allowing faster data transfer rates.
5
GPRS/EDGE multi-slot class 12 implies a maximum of 4 slots in DL (reception) and 4 slots in UL (transmission) with 5 slots in total.
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TOBY-R2 series - Data Sheet
Feature
Description
Network Indication
GPIO configured to indicate the network status: registered home network, registered roaming, voice or data call
enabled, no service. The feature can be enabled through the +UGPIOC AT command.
Antenna Detection
The ANT_DET pin provides antenna presence detection capability, evaluating the resistance from ANT1 and ANT2
pins to GND by means of an external antenna detection circuit implemented on the application board.
The antenna detection feature can be enabled through the +UANTR AT command.
Jamming detection6
Detects “artificial” interference that obscures the operator’s carriers entitled to give access to the radio service and
reports the start and stop of such conditions to the application processor that can react accordingly.
Embedded TCP and UDP
stack
Embedded TCP/IP and UDP/IP stack including direct link mode for TCP and UDP sockets.
Sockets can be set in Direct Link mode to establish a transparent end to end communication with an already
connected TCP or UDP socket via serial interface.
FTP, FTPS
File Transfer Protocol as well as Secure File Transfer Protocol (SSL encryption of FTP control channel) functionalities
are supported via AT commands.
HTTP, HTTPS
Hyper-Text Transfer Protocol as well as Secure Hyper-Text Transfer Protocol (SSL encryption) functionalities are
supported via AT commands. HEAD, GET, POST, DELETE and PUT operations are available.
Embedded TLS 1.2
With the support of X.509 certificates, Embedded TLS 1.2 provides server and client authentication, data
encryption, data signature and enables TCP/IP applications like HTTPS and FTPS to communicate over a secured and
trusted connection.
The feature can be configured and enabled by +USECMNG and +USECPRF AT commands.
DNS
Support for DNS functionality.
IPv4/IPv6 dual-stack
Capability to move between IPv4 and dual stack network infrastructures. IPv4 and IPv6 addresses can be used.
BIP
Bearer Independent Protocol for Over-the-Air SIM provisioning. The data transfer to/from the SIM uses either an
already active PDP context or a new PDP context established with the APN provided by the SIM card.
Multiple PDP contexts
Up to 8 PDP contexts can be activated, and multi secondary PDP contexts be associated to a primary PDP context
VoLTE and CSFB
Voice over LTE (VoLTE) feature allows voice service over LTE bearer, via embedded IP Multimedia Subsystem (IMS)
Circuit Switched Fall-Back (CSFB) feature allows voice service over circuit switched infrastructure (3G/2G)
Firmware update Over
AT commands (FOAT)
Firmware module update Over AT command interfaces.
The feature can be enabled and configured through the +UFWUPD AT command.
Firmware update Over
The Air (FOTA)
Embedded FOTA client to enable the Firmware module update over the cellular air interface.
The feature can be enabled and configured through the +UFWINSTALL AT command.
1.5 AT command support
The TOBY-R2 series modules support AT commands according to 3GPP standards TS 27.007 [8], TS 27.005 [9]
and the u-blox AT command extension.
For the complete list of all supported AT commands and their syntax, see the u-blox AT Commands
Manual [1].
RIL (Radio Interface Layer) software for Android and Embedded Windows is available for TOBY-R2 series modules
free of charge; see the Android RIL Production delivery [3] and Windows Embedded RIL Production delivery [4]
application notes for the supported software deliveries and more information.
1.6 Supported features
Table 3 lists some of the main features supported by TOBY-R2 modules. For more details see TOBY-R2 series
System Integration Manual [2] and u-blox AT Commands Manual [1].
6
Not supported by “02” product versions.
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TOBY-R2 series - Data Sheet
Feature
Description
LTE Rx Diversity
Improved cellular link quality and reliability on all operating bands, by means of 2 receiving antenna inputs.
GNSS via modem7
Full access to u-blox positioning chips and modules is available through a dedicated DDC (I2C) interface. This means
that from any host processor a single serial port can control the cellular module and the positioning chip or module.
For more details see the GNSS Implementation Application Note [5].
Embedded AssistNow
Software7
Embedded AssistNow Online and AssistNow Offline clients are available to provide better GNSS performance and
faster Time-to-First-Fix. An AT command can enable / disable the clients.
CellLocate
®7
Enables the estimation of device position based on the parameters of the mobile network cells visible to the specific
device based on the CellLocate® database:
Normal scan: only the parameters of the visible home network cells are sent
Deep scan: the parameters of all surrounding cells of all mobile operators are sent
CellLocate® is available via a set of AT commands for CellLocate® service configuration and position request.
Hybrid Positioning7
The current module position is provided by a u-blox positioning chip or module or the estimated position from
CellLocate® depending on which method provides the best and fastest solution according to the user configuration.
Hybrid positioning is available via a set of AT commands that allow the configuration and the position request.
Wi-Fi via modem7
Full access to Wi-Fi modules is available through a dedicated SDIO interface. This means that from any host
processor a single serial port can control the cellular module and the short range communication module.
Smart Temperature
Supervisor
Constant monitoring of the module board temperature:
Warning notification when the temperature approaches an upper or lower predefined threshold
Shutdown notified and forced when the temperature value is outside the specified range (shutdown
suspended in case of an emergency call in progress)
The Smart Temperature Supervisor feature can be enabled and configured through the +USTS AT command.
The sensor measures board temperature, which can differ from ambient temperature.
Power saving
The power saving configuration is by default disabled, but it can be enabled and configured using the +UPSV AT
command. When the power saving is enabled, the module automatically enters the low power idle-mode whenever
possible, reducing current consumption.
During idle-mode, the module processor core runs with the RTC 32 kHz reference clock, which is generated by the
internal 32 kHz oscillator.
Fast Dormancy
The Fast Dormancy feature, defined in 3GPP Rel.8, allows reduction of current consumption and network utilization
during periods of data inactivity. It can be activated and configured by +UFDAC and +UDCONF=61 AT commands.
LTE cDRX
Both the Long DRX Cycle and the Short DRX cycle are supported for LTE Connected Discontinuous Reception,
allowing reduction of current consumption and LTE network utilization during periods of data inactivity
Power Saving Mode
(PSM) as specified in
3GPP Release 127
The Power Saving Mode (PSM) feature, defined in 3GPP Rel.12, allows further reduction of the module current
consumption by decreasing the signaling load between the module and the network on non-access stratum level
during periods of data inactivity. It can be activated and configured by dedicated AT commands.
Table 3: Some of the main features supported by TOBY-R2 series modules
u-blox is extremely mindful of user privacy. When a position is sent to the CellLocate
unable to track the SIM used or the specific device.
7
Not supported by “02” product versions.
UBX-16005785 - R06 Functional description
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®
server u-blox is
TOBY-R2 series - Data Sheet
2 Interfaces
2.1 Power management
2.1.1 Module supply input (VCC)
TOBY-R2 series modules must be supplied through the three VCC pins by a DC power supply. Voltage must be
stable, because during operation the current drawn from VCC can vary by some order of magnitude, especially
due to the surging consumption profile of the GSM system (described in the TOBY-R2 series System Integration
Manual [2]). It is important that the system power supply circuit is able to support peak power.
TOBY-R200 modules provide separate supply inputs over the three VCC pins:
VCC pins #71 and #72 represent the supply input for the internal RF power amplifier, demanding most of
the total current drawn by the module when RF transmission is enabled during a voice/data call
VCC pin #70 represents the supply input for the internal baseband Power Management Unit and the internal
transceiver, demanding minor part of the total current drawn by the module when RF transmission is
enabled during a voice/data call
2.1.2 RTC supply input / output (V_BCKP)
When VCC voltage is within the valid operating range, the internal Power Management Unit (PMU) supplies the
Real Time Clock (RTC) and the same supply voltage is available on the V_BCKP pin. If the VCC voltage is under
the minimum operating limit (e.g. during not powered mode), the V_BCKP pin can externally supply the RTC.
2.1.3 Generic digital interfaces supply output (V_INT)
TOBY-R2 series modules provide a 1.8 V supply rail output on the V_INT pin, which is internally generated when
the module is switched on. The same voltage domain is used internally to supply the generic digital interfaces of
the modules. The V_INT supply output can be used in place of an external discrete regulator.
2.2 Antenna interfaces
2.2.1 Antenna RF interfaces
The modules have two RF pins with a characteristic impedance of 50 . The primary antenna pin (ANT1)
supports both Tx and Rx, providing the main antenna interface, while the secondary antenna pin (ANT2)
supports Rx only for the LTE Rx diversity configuration.
2.2.2 Antenna detection
The ANT_DET pin is an Analog to Digital Converter (ADC) input with a current source provided by TOBY-R2
modules to sense the antenna presence (as an optional feature). It evaluates the resistance from ANT1 and
ANT2 pins to GND by means of an external antenna detection circuit implemented on the application board.
(For more details, see TOBY-R2 series System Integration Manual [2] and u-blox AT Commands Manual [1].)
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TOBY-R2 series - Data Sheet
2.3 System functions
2.3.1 Module power-on
TOBY-R2 series can be switched on in one of the following ways:
Rising edge on the VCC pins to a valid voltage for module supply, i.e. applying module supply: the modules
switch on if the VCC supply is applied, starting from a voltage value of less than 2.1 V, with a rise time from
2.3 V to 2.8 V of less than 4 ms, reaching a proper nominal voltage value within VCC operating range.
Alternately, in case for example the fast rise time on VCC rising edge cannot be guaranteed by the application,
TOBY-R2 series modules can be switched on from not-powered mode as following:
RESET_N input pin is held low by the external application during the VCC rising edge, so that the modules
will switch on when the external application releases the RESET_N input pin from the low logic level after
the VCC supply voltage stabilizes at its proper nominal value within the operating range
PWR_ON input pin is held low by the external application during the VCC rising edge, so that the modules
will switch on when the external application releases the PWR_ON input pin from the low logic level after
the VCC supply voltage stabilizes at its proper nominal value within the operating range
When the TOBY-R2 series modules are in the power-off mode (i.e. properly switched off as described in section
2.3.2, with valid VCC module supply applied), they can be switched on as follows:
Low pulse on the PWR_ON pin, which is normally set high by an internal pull-up, for a valid time period (see
section 4.2.8). The PWR_ON line should be driven by open drain, open collector or contact switch.
Rising edge on the RESET_N pin, i.e. releasing the pin from the low level, normally set high by an internal
pull-up. The RESET_N line should be driven by open drain, open collector or contact switch.
RTC alarm, i.e. pre-programmed scheduled time by AT+CALA command.
2.3.2 Module power-off
TOBY-R2 series can be properly switched off, saving current parameter settings in the module’s non-volatile
memory and performing a proper network detach, by:
AT+CPWROFF command (see the u-blox AT Commands Manual [1]).
Low pulse on the PWR_ON pin, which is normally set high by an internal pull-up, for a valid time period (see
section 4.2.8). The PWR_ON line should be driven by open drain, open collector or contact switch.
An abrupt under-voltage shutdown occurs on TOBY-R2 series modules when the VCC supply is removed. If this
occurs, it is not possible to store the current parameter settings in the module’s non-volatile memory and to
perform the proper network detach.
An abrupt shutdown occurs on TOBY-R2 series modules when a low level is applied on the RESET_N pin, which
is normally set high by an internal pull-up. If this occurs, it is not possible to store the current parameter settings
in the module’s non-volatile memory and to perform the proper network detach.
An over-temperature or an under-temperature shutdown occurs on TOBY-R2 modules when the temperature
measured within the cellular module reaches the dangerous area, if the optional Smart Temperature Supervisor
feature is enabled and configured by the dedicated AT command. For more details see the TOBY-R2 series
System Integration Manual [2] and the u-blox AT Commands Manual [1], +USTS AT command.
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TOBY-R2 series - Data Sheet
2.3.3 Module reset
TOBY-R2 series modules can be reset (rebooted) by:
AT+CFUN command (see the u-blox AT Commands Manual [1]). This causes an “internal” or “software”
reset of the module. The current parameter settings are saved in the module’s non-volatile memory and a
proper network detach is performed.
An abrupt “external” or “hardware” reset occurs when a low level is applied to the RESET_N pin, which is
normally set high by an internal pull-up, for a valid time period (see the section 4.2.9). This causes an “external”
or “hardware” reset of the entire module, including the integrated power management unit, except for the RTC
internal block: the V_INT generic digital interfaces supply is switched off and all the digital pins are tri-stated,
but the V_BCKP supply and the RTC block are enabled. The current parameter settings are not saved in the
module’s non-volatile memory and a proper network detach is not performed. The RESET_N line should be
driven by open drain, open collector or contact switch.
2.3.4 Module / host configuration selection
Selection of module / host configuration over HOST_SELECT0 and HOST_SELECT1 pins is not supported.
TOBY-R2 series modules include two pins (HOST_SELECT0, HOST_SELECT1) for the selection of the module /
host application processor configuration.
2.4 SIM
2.4.1 SIM interface
A SIM card interface is provided on the VSIM, SIM_IO, SIM_CLK, SIM_RST pins: the high-speed SIM/ME
interface is implemented as well as the automatic detection of the required SIM supporting voltage.
Both 1.8 V and 3 V SIM types are supported (1.8 V and 3 V ME). Activation and deactivation with automatic
voltage switch from 1.8 V to 3 V is implemented, according to ISO-IEC 7816-3 specifications. The SIM driver
supports the PPS procedure for baud-rate selection, according to the values proposed by the SIM card/chip.
2.4.2 SIM detection
TOBY-R2 series modules provide the SIM detection function over the GPIO5 pin to sense the SIM card physical
presence (as an optional feature) when the pin of the module is properly connected to the mechanical switch of
the SIM car holder (for more details see the TOBY-R2 series System Integration Manual [2]).
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TOBY-R2 series - Data Sheet
2.5 Serial communication
TOBY-R2 series provides the following serial communication interfaces:
UART interface: Universal Asynchronous Receiver/Transmitter serial interface available for the communication
with a host application processor (AT commands, data communication, FW update by means of FOAT), for
FW update by means of the u-blox EasyFlash tool and for diagnostic.
USB interface: Universal Serial Bus 2.0 compliant interface 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 diagnostic.
DDC interface: I
chips/modules and with external I2C devices as an audio codec.
SDIO interface: Secure Digital Input Output interface available for the communication with compatible
u-blox short range radio communication Wi-Fi modules.
2.5.1 UART interface
TOBY-R2 series modules include a 9-wire unbalanced Universal Asynchronous Receiver/Transmitter serial
interface (UART) for communication with an application host 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 diagnostic.
UART features are:
Complete serial port with RS-232 functionality conforming to the ITU-T V.24 Recommendation [14], with
CMOS compatible signal levels (0 V for low data bit or ON state and 1.8 V for high data bit or OFF state)
Data lines (RXD as output, TXD as input), hardware flow control lines (CTS as output, RTS as input), modem
status and control lines (DTR as input, DSR as output, DCD as output, RI as output) are provided
Hardware flow control (default value), software flow control, or none flow control are supported
Power saving indication available on the hardware flow control output (CTS line): the line is driven to the
OFF state when the module is not prepared to accept data by the UART interface
Power saving control over the RTS input or the DTR input can be enabled via AT+UPSV command (for more
details see u-blox AT Commands Manual [1] and TOBY-R2 series System Integration Manual [2])
The following baud rates are supported: 9600, 19200, 38400, 57600, 115200 (default baud rate when
autobauding is disabled), 230400, 460800, 921600, 3000000, 3250000, 6000000 and 6500000 b/s
One-shot autobauding is supported and it is by default enabled: automatic baud rate detection is performed
only once, at module start up. After the detection, the module works at the fixed baud rate (the detected
one) and the baud rate can only be changed via AT command (see u-blox AT Commands Manual [1], +IPR).
The following frame format are supported: 8N2, 8N1 (default format when automatic frame recognition is
disabled), 8E1, 8O1, 7E1 and 7O1
One-shot automatic frame recognition is supported and it is by default enabled in conjunction with
automatic baud rate detection (autobauding): the detection is performed only once, at module start up.
After the detection, the module works at the detected frame format and it can only be changed via AT
command (see u-blox AT Commands Manual [1], +ICF).
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 TOBY-R2 series System Integration Manual [2].
2
C bus compatible interface available for the communication with u-blox GNSS positioning
UBX-16005785 - R06 Interfaces
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