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u-blox TOBY-R2 Technical data

UBX-16005785 - R18 C1-Public www.u-blox.com
TOBY-R2 series
Multi-mode LTE Cat 1 modules with 2G/3G fallback
Data sheet
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 six LTE bands, up to four 3G UMTS/HSPA bands, and up to four 2G GSM/EDGE bands in the compact TOBY form factor.
TOBY-R2 series - Data sheet
UBX-16005785 - R18 Document information Page 2 of 46 C1-Public

Document information

Title
TOBY-R2 series
Subtitle
Multi-mode LTE Cat 1 modules with 2G/3G fallback
Document type
Data sheet
Document number
UBX-16005785
Revision and date
R18
30-Mar-2021
Disclosure restriction
C1-Public
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 production information
Data from product verification. Revised and supplementary data may be published later.
Mass production / End of life
Production information
Document contains the final product specification.
This document applies to the following products:
Product name
Type number
Modem version
Application version
PCN reference
Product status
TOBY-R200
TOBY-R200-02B-00
30.31
A01.01
UBX-17006265
Obsolete
TOBY-R200-02B-01
30.31
A02.00
UBX-17048314
Obsolete
TOBY-R200-02B-02
30.31
A02.01
UBX-18018067
Obsolete
TOBY-R200-02B-03
30.31
A02.02
UBX-18057549
Obsolete
TOBY-R200-02B-04
30.33
A02.02
UBX-19011731
Mass production
TOBY-R200-42B-00
30.53
A01.02
UBX-19045985
Mass production
TOBY-R200-82B-00
30.53
A01.03
UBX-19043497
Mass production
TOBY-R200-03B-00
30.55
A01.00
UBX-20027523
Mass production
TOBY-R202
TOBY-R202-02B-00
30.31
A01.01
UBX-17006265
Obsolete
TOBY-R202-02B-01
30.31
A02.00
UBX-17048314
Obsolete
TOBY-R202-02B-02
30.31
A02.01
UBX-18018067
Obsolete
TOBY-R202-02B-03
30.31
A02.02
UBX-18057549
Obsolete
TOBY-R202-02B-04
30.33
A02.02
UBX-19011731
Mass production
TOBY-R202-02B-34
30.33
A02.04
UBX-19039777
Obsolete
u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only permitted with the express written permission of u-blox. The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or implied, is given, including but not limited to, 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 without notice. For the most recent documents, visit www.u-blox.com. Copyright © u-blox AG.
TOBY-R2 series - Data sheet
UBX-16005785 - R18 Contents Page 3 of 46 C1-Public

Contents

Document information ................................................................................................................................ 2
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 ..............................................................................................................................12
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
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
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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 .......................................................................................................29
4.3 Parameters for ATEX applications ........................................................................................................32
5 Mechanical specifications ............................................................................................................... 33
6 Qualification and approvals............................................................................................................. 34
6.1 Reliability tests ..........................................................................................................................................34
6.2 Approvals ....................................................................................................................................................34
7 Product handling & soldering .......................................................................................................... 35
7.1 Packaging ...................................................................................................................................................35
7.1.1 Reels ....................................................................................................................................................35
7.1.2 Tapes ...................................................................................................................................................36
7.2 Moisture sensitivity levels .......................................................................................................................37
7.3 Reflow soldering ........................................................................................................................................37
7.4 ESD precautions ........................................................................................................................................37
8 Default settings .................................................................................................................................. 38
9 Labeling and ordering information ............................................................................................... 39
9.1 Product labeling .........................................................................................................................................39
9.2 Explanation of codes ................................................................................................................................39
9.3 Ordering information ................................................................................................................................40
Appendix ....................................................................................................................................................... 41
Related documentation ........................................................................................................................... 44
Revision history .......................................................................................................................................... 45
Contact .......................................................................................................................................................... 46
TOBY-R2 series - Data sheet
UBX-16005785 - R18 Functional description Page 5 of 46 C1-Public

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, 152-pin) that are easy to integrate in compact designs.
TOBY-R2 series modules support up to six 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 include product versions supporting Voice over LTE (VoLTE) and voice over 3G or 2G (CSFB) for applications that requiring voice, such as security and surveillance systems.

1.2 Product features

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 (I2C) GPIOs Analog audio Digital audio Network indication VoLTE Antenna supervisor Rx Diversity Embedded TCP/UDP stack Embedded HTTP, FTP, SSL FOTA
Dual stack IPv4 / IPv6 Standard Professional Automotive
TOBY-R200-02B
North
America
2,4
5,12
850,900
1900,2100
Quad
■ ■ ■
1 1 1 1 9
●
●
●2
● ● ● ● ●
● ●
TOBY-R200-42B
Global
1,2,4
5,8,12
850,900
1900,2100
Quad
● ● ●
1 1 1 1 9
● ● ● ● ● ● ● ● ● ●
TOBY-R200-82B
Global
1,2,4
5,8,12
850,900
1900,2100
Quad
● ● ●
1 1 1 1 9
●
●
●
2
● ● ● ● ●
● ●
TOBY-R200-03B
Global
1,2,4
5,8,12
850,900
1900,2100
Quad
● ● ●
1 1 1 1 9
●
●
●
2
● ● ● ● ●
● ●
TOBY-R202-02B
North
America
2,4
5,12
850,1900
■ ■ ■
1 1 1 1 9
●
●
●2
● ● ● ● ●
● ●
● = Supported by all FW version ■ = Supported by "TOBY-R20x-02B-01" FW version onwards * = HW ready
Table 1: TOBY-R2 series main features summary
1
LTE band 12 is a superset including band 17: LTE band 12 is supported along with Multi-Frequency Band Indicator feature
2
VoLTE available and AT&T certified
TOBY-R2 series - Data sheet
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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
LNAsFilters
Filter
s
Duplexer
Filters
PAs
LNAsFilter
s
Filter
s
Duplexer
Filters
LNAsFilter
s
Filters
LNAsFiltersFilter
s
Switch
Switch
DDC(I2C)
SDIO
UART
Digital audio (I2S)
ANT_DET
Host Select
Figure 1: TOBY-R2 series block diagram
☞ The TOBY-R200-02B, TOBY-R200-42B, TOBY-R200-82B, TOBY-R200-03B and TOBY-R202-02B
modules, i.e. the "02B", "42B", "82B", and "03B" 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
TOBY-R2 series - Data sheet
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1.4 Product description

TOBY-R2 modules provide 4G LTE Cat 1, 3G UMTS / HSPA, 2G GSM/EGPRS multi-mode technology:
• TOBY-R200-02B is designed primarily for operation in North America
• TOBY-R200-03B is designed for worldwide operation, and primarily in North America
• TOBY-R200-42B is designed for worldwide operation, and primarily in North America
• TOBY-R200-82B is designed for worldwide operation, and primarily in North America
• TOBY-R202-02B is designed primarily for operation in North America
4G LTE
3G UMTS/HSDPA/HSUPA
2G GSM/GPRS/EDGE
3GPP Release 9 Long Term Evolution (LTE) Evolved UTRA (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 Rx Diversity
3GPP Release 9 Enhanced Data rate GSM Evolution (EDGE) GSM EGPRS Radio Access (GERA) Time Division Multiple Access (TDMA) DL Advanced Rx Performance Phase 1
Band support3:
• TOBY-R200:
• Band 12 (700 MHz)4
• Band 8 (900 MHz)5
• Band 5 (850 MHz)
• Band 4 (1700 MHz)
• Band 2 (1900 MHz)
• Band 1 (2100 MHz)5
• TOBY-R202:
• Band 12 (700 MHz)4
• 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 rate6
• GPRS multi-slot class 337, CS1-CS4,
up to 107 kb/s DL, up to 85.6 kb/s UL
• EDGE multi-slot class 337, MCS1-MCS9,
up to 296 kb/s DL, up to 236.8 kb/s UL
Table 2: TOBY-R2 series LTE, 3G and 2G characteristics
TOBY-R2 series modules provide Voice over LTE (VoLTE)8 as well as Circuit-Switched-Fall-Back (CSFB) audio capability.
3
TOBY-R2 series modules support all the E-UTRA channel bandwidths for each operating band as per 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
4
LTE band 12 is a superset including band 17: LTE band 12 is supported along with Multi-Frequency Band Indicator feature
5
Not supported by TOBY-R200-02B product version
6
GPRS/EDGE multislot 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.
7
GPRS/EDGE multislot class 33 implies a maximum of 5 slots in DL (reception), 4 slots in UL (transmission) with 6 slots in total.
8
AT&T certified
TOBY-R2 series - Data sheet
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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 source code [3] and Windows Embedded RIL source code [4] application notes for 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].
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.
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
AT commands support Hyper-Text Transfer Protocol and Secure Hyper-Text Transfer Protocol (SSL encryption) functionalities. 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). VoLTE is AT&T certified. 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.
LTE / 3G Rx Diversity
Improved cellular link quality and reliability on all operating bands, by means of 2 receiving antenna inputs.
TOBY-R2 series - Data sheet
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Feature
Description
GNSS via modem 9
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 Software 9
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
® 9
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 CellLocate® is available via a set of AT commands for CellLocate® service configuration and position
request.
Hybrid Positioning 9
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 modem 10
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.
DTMF decoder
During a voice call, the Dual-Tone Multi-Frequency detector analyses the RX speech (coming from remote party). The detected DTMF symbols can be output via the related URC.
The feature can be enabled and configured through the +UDTMFCFG and +UDTMFD AT commands.
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
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
®
server u-blox
is unable to track the SIM used or the specific device.
9
Not supported by TOBY-R200-02B-00 and TOBY-R202-02B-00
10
Not supported by "02B", "42B", "82B", or "03B" product versions
TOBY-R2 series - Data sheet
UBX-16005785 - R18 Interfaces Page 10 of 46 C1-Public

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 / 3G 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 the TOBY-R2 series system integration manual [2] and the u-blox AT commands manual [1].
TOBY-R2 series - Data sheet
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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 non­volatile 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 non­volatile 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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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 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]).

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 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: I2C bus compatible interface available for the communication with u-blox GNSS
positioning 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.
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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 the 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 bit/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].
2.5.1.1 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 details, see mux implementation application note [6]):
• Channel 0: Multiplexer control
• Channel 1 – 5: AT commands / data connection
• Channel 6: GNSS data tunneling
☞ The GNSS data tunneling channel is not supported by the TOBY-R200-02B-00 and the
TOBY-R202-02B-00 type numbers.
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2.5.2 USB interface

TOBY-R2 series modules include a USB High-Speed 2.0 compliant interface with 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 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 is not supported by TOBY-R200-02B-00 and TOBY-R202-02B-00. ☞ CDC-ACM for SAP, and CDC-NCM for Ethernet-over-USB are not supported by the "02B", "42B",
"82B", and "03B" 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 / Circuit­Switched Data communication on another CDC.
For more details regarding USB capabilities, see the TOBY-R2 series system integration manual [2].
USB drivers are available for the following Windows and Windows Embedded operating system platforms:
• Windows 7
• Windows 8
• Windows 8.1
• Windows 10
• Windows Embedded CE 6.0
• Windows Embedded Compact 7
• Windows Embedded Compact 2013
• Windows 10 IoT
TOBY-R2 series modules are compatible with standard Linux/Android USB kernel drivers.
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