Ublox TOBY-R2 Series User manual

EVK-R2
TOBY-R2 and LARA-R2 series Cellular Evaluation Kits
User Guide
Abstract
This guide explains how to set up the EVK-R2 Evaluation Kits to begin evaluating the u-blox TOBY-R2
and/or LARA-R2 series cellular modules supporting LTE Cat 1 / 3G / 2G radio access technologies.
www.u-blox.com
UBX-16016088 - R10

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Document Information
Title
EVK-R2
Subtitle
TOBY-R2 and LARA-R2 series Cellular Evaluation Kits
Document type
User Guide
Document number
UBX-16016088
Revision and date
R10
01-Jul-2019
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 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
EVK-R200
EVK-R200-00B-00
30.31
A01.01
UBX-17006265
Mass Production
EVK-R202
EVK-R202-00B-00
30.31
A01.01
UBX-17006265
Mass Production
EVK-R203
EVK-R203-00B-00
30.39
A01.00
UBX-17048311
Mass Production
EVK-R204
EVK-R204-00B-00
31.34
A01.00
UBX-17012269
Mass Production
EVK-R211
EVK-R211-00B-00
30.31
A01.00
UBX-17012270
Mass Production
EVK-R220
EVK-R220-00B-00
30.43
A01.01
UBX-17061668
Mass Production
EVK-R280
EVK-R280-00B-00
30.43
A01.01
UBX-17063950
Mass Production
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.

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Contents
Document Information................................................................................................................................2
Contents ..........................................................................................................................................................3
1Starting up ...............................................................................................................................................4
1.1 EVK-R2 overview ......................................................................................................................................... 4
1.2 EVK-R2 block diagram ............................................................................................................................... 7
1.3 Switches, jumpers and buttons ............................................................................................................... 8
1.4 LEDs...............................................................................................................................................................8
1.5 Connectors ................................................................................................................................................... 9
1.6 EVK-R2 pin out........................................................................................................................................... 10
1.6.1 EVK-R2 for TOBY-R2 series modules ........................................................................................... 10
1.6.2 EVK-R2 for LARA-R2 series modules ............................................................................................12
1.7 Software installation................................................................................................................................ 13
1.8 Board setup ................................................................................................................................................ 13
1.9 Enabling error result codes ..................................................................................................................... 15
1.10 PIN code insertion (when required)........................................................................................................ 15
1.11 Registration on a cellular network......................................................................................................... 16
1.12 Enable audio codec configuration to provide voice capability ......................................................... 16
1.13 Switching off the EVK-R2........................................................................................................................ 16
Appendix ........................................................................................................................................................ 17
ASetting up AT terminal applications for communication with EVK-R2............................. 17
BSetting up cellular packet data connection on PC ................................................................... 18
B.1 How to install and configure a low data rate modem connection................................................... 18
B.2 How to install and configure a high data rate modem connection ..................................................21
CExamples of AT commands ............................................................................................................. 23
C.1 Define the initial default bearer for connectivity................................................................................23
DCurrent consumption measurement............................................................................................ 24
EGlossary ..................................................................................................................................................25
FDeclaration of conformities..............................................................................................................25
Related documents ....................................................................................................................................26
Revision history ...........................................................................................................................................26
Contact...........................................................................................................................................................27

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1Starting up
1.1 EVK-R2 overview
The EVK-R2 kits are powerful and easy-to-use tools that simplify the evaluation of u-blox TOBY-R2
and LARA-R2 series multimode LTE Cat 1 / 3G / 2G cellular modules.
The following evaluation kits are available with u-blox TOBY-R2 cellular modules (see Figure 1):
EVK-R200 evaluation kit is for evaluation of TOBY-R200
EVK-R202 evaluation kit is for evaluation of TOBY-R202
The following evaluation kits are available with u-blox LARA-R2 cellular modules (see Figure 2):
EVK-R203 evaluation kit is for evaluation of LARA-R203
EVK-R204 evaluation kit is for evaluation of LARA-R204
EVK-R211 evaluation kit is for evaluation of LARA-R211
EVK-R220 evaluation kit is for evaluation of LARA-R220
EVK-R280 evaluation kit is for evaluation of LARA-R280
All the EVK-R200, EVK-R202, EVK-R203, EVK-R204, EVK-R211, EVK-R220, EVK-R280 evaluation kits
are herein identified as EVK-R2.
☞See the TOBY-R2 series Data Sheet [3], LARA-R2 series Data Sheet [4], TOBY-R2 series System
Integration Manual [5] and LARA-R2 series System Integration Manual [6] for the features
supported by the u-blox TOBY-R2 and LARA-R2 series cellular modules.

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SIM card holder
J300
Cellular reset
SW303
Cellular power-on
SW302
GND
9 –18 V
Power input
J400
Cellular adapter
board
DL400
Main power switch
SW400
DL401
Secondary Cellular
antenna connector
ANT2 - J102
TOBY-R2
Cellular module
DIL B2B connector
J200
DIL B2B connector
J201
GND
GNSS
antenna connector
J103
GNSS module
GNSS
adapter board
Cellular VCC
supply jumper
J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501DL403 DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
Headset jack
J303
DS132
DS118DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
GND
Primary Cellular
antenna connector
ANT1 - J103
BT200
Cellular native USB
J100
Audio
codec
DS100
Figure 1: Overview of EVK-R2 evaluation kit for TOBY-R2 modules

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SIM card holder
J300
Cellular reset
SW303
Cellular power-on
SW302
GND
9 –18 V
Power input
J400
Cellular
adapter board
DL400
Main power switch
SW400
DL401
Secondary Cellular
antenna connector
ANT2 - J102
LARA-R2
Cellular module
DIL B2B connector
J300
DIL B2B connector
J301
GND
GNSS
antenna connector
J103
GNSS module
GNSS
adapter board
Cellular VCC
supply jumper
J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501DL403 DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
Headset jack
J303
DS132
DS118DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
GND
Primary Cellular
antenna connector
ANT1 - J103
BT200
Cellular native
USB J104
DS100 Audio
codec
Figure 2: Overview of EVK-R2 evaluation kit for LARA-R2 modules

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1.2 EVK-R2 block diagram
Figure 3 shows the main interfaces and internal connections of the EVK-R2 evaluation kit:
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
TOBY-R2 adapter board
TOBY-R2
Cellular
module
42-pin DIL B2B connector (J200)
42-pin DIL B2B connector (J201)
EVB-WL3
GNSS
module
GNSS adapter board
RF
USB
UART
converter
Cellular USB
(UART)
(J501)
Cellular RS232
(UART)
(J500)
RS232
UART
converter UART
MiniUSB/DB9
switch
(SW403)
On-Board/B2B
switch
(SW401)
USB
Headset jack
(J303)
I2C
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
GPIO2/3/4
GNSS switch
(SW304)
Native
USB
(J100)
ANT1
(J103)
ANT2
(J102)
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
LARA-R2 adapter board
LARA-R2
Cellular
module
42-pin DIL B2B connector (J300)
42-pin DIL B2B connector (J301)
EVB-WL3
GNSS
module
GNSS adapter board
RF
USB
UART
converter
Cellular USB
(UART)
(J501)
Cellular RS232
(UART)
(J500)
RS232
UART
converter UART
MiniUSB/DB9
switch
(SW403)
On-Board/B2B
switch
(SW401)
USB
Headset jack
(J303)
I2C
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
GPIO2/3/4
GNSS switch
(SW304)
Native
USB
(J104)
ANT1
(J103)
ANT2
(J102)
Audio
Codec
Audio
Codec
Figure 3: Block diagram of EVK-R2 for TOBY-R2 modules (shown on top) and LARA-R2 modules (shown on bottom)
The EVK-R2 is formed by three boards:
The lower one, called EVB-WL3, contains the power supply and other peripherals for the TOBY-R2
series or the LARA-R2 series cellular module (SIM card holder, Reset button and Power-on button).
The cellular adapter board, called ADP-R2, contains the TOBY-R2 or LARA-R2 cellular module, the
cellular antenna connectors, the USB connector for the cellular module, and an audio codec.
The GNSS adapter board, called ADP-GNSS, contains the u-blox GNSS module, the GNSS antenna
connector and the USB connector for the GNSS module.
The boards are connected by means of male header board-to-board connectors provided on the
bottom of the adapter boards and their corresponding female connectors provided on top of the lower
board.
The USB interface of the cellular module is available on the native USB connector on the cellular
adapter board, while the other peripherals are available on the Dual-In-Line male Board-to-Board
connectors provided on the top layer of the cellular Adapter Board (J200 / J201 or J300 / J301), which
are pin-to-pin compatible to the connectors on the bottom layer of the adapter board.
The lower board (EVB-WL3) is designed to also be used with other u-blox cellular adapter boards. It
contains additional switches, jumpers, connectors, LEDs and parts that are partially described in
Figure 1 / Figure 2 or in this document, because they are intended for use only with other u-blox cellular
modules. It is recommended to leave any additional connector unconnected, and to leave any
additional switch in its default configuration.

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1.3 Switches, jumpers and buttons
Function
Description
Name
Board
Main Power Switch
Power on / off of the whole evaluation kit
SW400
EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular module VCC input
J404
EVB
Cellular Power-on
Push button to switch-on the cellular module
SW302
EVB
Cellular Reset
Push button to reset the cellular module
SW303
EVB
Cellular UART detach
Slide switch to attach / detach cellular module UART from USB / RS232 connectors:
when detached, UART signals available only on DIL B2B connector on ADP board
SW401
EVB
Cellular UART routing
Slide switch to select cellular module UART routing on USB or on RS232 connector
SW403
EVB
Cellular GPIO detach
Slide switch to attach / detach the cellular module GPIOs, SIM_DET from peripherals:
when detached, the signals are available only on the DIL B2B connector on ADP board
SW300
EVB
Cellular GNSS detach
Slide switch to attach / detach the cellular module to the GNSS module (GPIO2-3-4):
when detached, the signals are available only on DIL B2B connector on ADP board
SW304
EVB
GNSS V_BCKP
Slide switch to connect / disconnect backup battery to V_BCKP pin of the GNSS
module
SW204
EVB
Table 1: EVK-R2 switch and button descriptions
1.4 LEDs
Function
Description
LED #
Board
Color
Main Power
Power supply plugged in the 9 - 18 V Power Input
DL401
EVB
Cellular VCC
Cellular module supplied. Main Power Switch must be switched on
DL400
EVB
Cellular native USB
USB cable plugged in the Cellular native USB connector
DS100
ADP-R2
Cellular USB
USB cable plugged in the Cellular USB connector for UART access
DL501
EVB
Cellular USB / UART
Green light is activated when UART is routed to the Cellular USB connector
Red light blinks at UART TX or RX data on the Cellular USB connector
DL403
EVB
Cellular UART detach
UART signals are available only on the DIL B2B connector on ADP board
DL404
EVB
Cellular RS232 / UART
Green light is activated when UART is routed to Cellular RS232 connector
Red light blinks at UART TX or RX data on the Cellular RS232 connector
DL405
EVB
Cellular RI indicator
RI line turns ON (active low)
DS501
EVB
Cellular CTS indicator
CTS line turns ON (active low)
DS500
EVB
Cellular GPIO1 indicator
Green light is activated when cellular GPIO1 is high
DS107
EVB
Cellular GPIO2 indicator
Green light is activated when cellular GPIO2 is high
DS105
EVB
Cellular GPIO3 indicator
Green light is activated when cellular GPIO3 is high
DS109
EVB
Cellular GPIO4 indicator
Green light is activated when cellular GPIO4 is high
DS103
EVB
GNSS VCC supply
GNSS module supply is turned ON
DS118
ADP-GNSS
GNSS USB
USB cable plugged in GNSS USB connector
DS124
ADP-GNSS
GNSS Timepulse
Pulses at 1 Hz when valid GNSS fix
DS121
ADP-GNSS
Cellular / GNSS DDC
Cellular / GNSS module communication over the DDC (I2C) interface
DS132
ADP-GNSS
Table 2: EVK-R2 LED descriptions

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1.5 Connectors
Function
Description
Name
Board
9 - 18 V Power Input
Connector for the AC / DC power adapter of the EVK
AC: 100-240 V, 0.8 A, 50-60 Hz / DC: +12 V, 2.5 A
IEC 60417-5172
Class II equipment
J400
EVB
SIM card holder
SIM card holder
J300
EVB
Primary cellular
antenna
SMA connector for the cellular module primary antenna (ANT1, Tx/Rx)
J103
ADP-R2
Secondary cellular
antenna
SMA connector for the cellular module secondary antenna (ANT2, Rx)
J102
ADP-R2
Cellular native USB
Mini USB connector for the cellular module native USB interface
J1001
J1042
ADP-R2
Cellular USB (UART)
Mini USB connector for the cellular module UART interface converted as USB
interface
J501
EVB
Cellular RS232 (UART)
DB9 connector for the cellular module UART interface converted as RS232
interface
J500
EVB
DIL B2B headers
Dual-In-Line Board-to-Board connectors for cellular module interfaces
J200-J2011
J300-J3012
ADP-R2
Cellular headset
Audio headset jack connector for the cellular module audio interface
J303
EVB
GNSS antenna
SMA connector for the GNSS module antenna (GNSS antenna)
J208
ADP-GNSS
GNSS USB
Mini USB connector for the GNSS module USB interface
J102
ADP-GNSS
GNSS backup battery
Backup battery socket for the GNSS module (under GNSS adapter board)
BT200
EVB
GND
Ground terminals for the probe reference
J402, J403
J405, J406
EVB
Table 3: EVK-R2 connector descriptions
⚠CAUTION! IN THE UNLIKELY EVENT OF A FAILURE IN THE INTERNAL PROTECTION CIRCUITRY,
THERE IS A RISK OF AN EXPLOSION WHEN CHARGING A FULLY OR PARTIALLY DISCHARGED
BATTERY. REPLACE THE BATTERY WHEN IT NO LONGER HAS A SUFFICIENT CHARGE FOR
UNIT OPERATION. CONTROL THE BATTERY BEFORE USE IF THE DEVICE HAS NOT BEEN USED
FOR AN EXTENDED PERIOD OF TIME.
⚠CAUTION! RISK OF EXPLOSION IF BATTERY IS REPLACED WITH AN INCORRECT TYPE. DISPOSE
OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS!
1
EVK-R2xx evaluation kit for TOBY-R2 series modules
2
EVK-R2xx evaluation kit for LARA-R2 series modules

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1.6 EVK-R2 pin out
1.6.1 EVK-R2 for TOBY-R2 series modules
TOBY-R2 series
DIL B2B
TOBY-R2 series
DIL B2B
TOBY-R2 series
DIL B2B
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
1
RSVD
Not present
32
GND
J201 Pins 7-10
63
SDIO_D2
Not present3
2
GND
J201 Pins 7-10
33
RSVD
Not present
64
SDIO_CLK
Not present3
3
V_BCKP
J201 Pin 3
34
RSVD
Not present
65
SDIO_CMD
Not present3
4
VUSB_DET
Not present
35
RSVD
Not present
66
SDIO_D0
Not present3
5
V_INT
J201 Pin 36
36
RSVD
Not present
67
SDIO_D3
Not present3
6
RSVD
Not present
37
RSVD
Not present
68
SDIO_D1
Not present3
7
RSVD
Not present
38
RSVD
Not present
69
GND
J201 Pins 7-10
8
RSVD
Not present
39
RSVD
Not present
70
VCC
J200 Pins 7-10
9
RSVD
Not present
40
RSVD
Not present
71
VCC
J200 Pins 7-10
10
DSR
J201 Pin 18
41
RSVD
Not present
72
VCC
J200 Pins 7-10
11
RI
J201 Pin 17
42
RSVD
Not present
73
GND
J201 Pins 7-10
12
DCD
J201 Pin 11
43
RSVD
Not present
74
GND
J201 Pins 7-10
13
DTR
J201 Pin 12
44
GND
J201 Pins 7-10
75
ANT_DET
Not present
14
RTS
J201 Pin 13
45
RSVD
Not present
76
GND
J201 Pins 7-10
15
CTS
J201 Pin 14
46
GND
J201 Pins 7-10
77
RSVD
Not present
16
TXD
J201 Pin 15
47
RSVD
Not present
78
GND
J201 Pins 7-10
17
RXD
J201 Pin 16
48
RSVD
Not present
79
GND
J201 Pins 7-10
18
RSVD
Not present
49
RSVD
Not present
80
GND
J201 Pins 7-10
19
RSVD
Not present
50
I2S_WA
Not present3
81
ANT1
Not present
20
PWR_ON
J201 Pin 29
51
I2S_TXD
Not present3
82
GND
J201 Pins 7-10
21
GPIO1
J201 Pin 33
52
I2S_CLK
Not present3
83
GND
J201 Pins 7-10
22
GPIO2
J201 Pin 31
53
I2S_RXD
Not present3
84
RSVD
Not present
23
RESET_N
J200 Pin 26
54
SCL
J200 Pin 20
85
GND
J201 Pins 7-10
24
GPIO3
J201 Pin 32
55
SDA
J200 Pin 21
86
GND
J201 Pins 7-10
25
GPIO4
J201 Pin 25
56
SIM_CLK
J200 Pin 15
87
ANT2
Not present
26
HOST_SELECT
0
J201 Pin 2
57
SIM_IO
J200 Pin 14
88
GND
J201 Pins 7-10
27
USB_D-
Not present
58
SIM_RST
J200 Pin 16
89
GND
J201 Pins 7-10
28
USB_D+
Not present
59
VSIM
J200 Pin 13
90
GND
J201 Pins 7-10
29
RSVD
Not present
60
GPIO5
J201 Pin 23
91
RSVD
Not present
30
GND
J201 Pins 7-10
61
GPIO6
Not present3
92
GND
J201 Pins 7-10
31
RSVD
Not present
62
HOST_SELEC
T1
J201 Pin 4
93-152
GND
J201 Pins 7-10
Table 4: Interfaces of TOBY-R2 series modules, as routed on the 42-pin Dual-In-Line Board-to-Board connectors (J200, J201)
available on the adapter board ADP-R2 of the EVK-R2 evaluation kit
3
0R jumper can be populated in order to route the signal to the 42-pin Dual-In-Line Board-to-Board connectors

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DIL B2B J201
DIL B2B J200
Signal Name
Pin N°
Pin N°
Signal Name
Signal Name
Pin N°
Pin N°
Signal Name
HOST_SELECT0
2
1
GND
Not connected
2
1
GND
Not connected
4
3
V_BCKP
Not connected
4
3
Not connected
Not connected
6
5
Not connected
Not connected
6
5
Not connected
GND
8
7
GND
VCC
8
7
VCC
GND
10
9
GND
VCC
10
9
VCC
DTR
12
11
DCD
Not connected
12
11
Not connected
CTS
14
13
RTS
SIM_IO
14
13
VSIM
RXD
16
15
TXD
SIM_RST
16
15
SIM_CLK
DSR
18
17
RI
Not connected
18
17
Not connected
Not connected
20
19
Not connected
SCL
20
19
Not connected
Not connected
22
21
Not connected
Not connected
22
21
SDA
Not connected
24
23
GPIO5
Not connected
24
23
Not connected
Not connected
26
25
GPIO4
RESET_N
26
25
Not connected
Not connected
28
27
Not connected
MIC_BIAS
28
27
MIC_GND
Not connected
30
29
PWR_ON
Not connected
30
29
Not connected
GPIO3
32
31
GPIO2
Not connected
32
31
Not connected
HOST_SELECT1
34
33
GPIO1
SPK_N
34
33
SPK_P
V_INT
36
35
Not connected
Not connected
36
35
Not connected
Not connected
38
37
Not connected
Not connected
38
37
Not connected
Not connected
40
39
Not connected
Not connected
40
39
Not connected
GND
42
41
GND
GND
42
41
Not connected
Table 5: Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors (J201, J200) available on the adapter board ADP-R2
of the EVK-R2 evaluation kit for TOBY-R2 series modules
☞The pins / interfaces that are not supported by a specific TOBY-R2 module product version should
be not driven by an external device (see the TOBY-R2 series Data Sheet [3] and the TOBY-R2 series
System Integration Manual [5] for the features supported by each TOBY-R2 module product
version).

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1.6.2 EVK-R2 for LARA-R2 series modules
LARA-R2 series
DIL B2B
LARA-R2 series
DIL B2B
LARA-R2 series
DIL B2B
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
1
GND
J301 Pins 7-10
24
GPIO3
J301 Pin 32
47
SDIO_D0
J300 Pin 17
2
V_BCKP
J301 Pin 3
25
GPIO4
J301 Pin 25
48
SDIO_D3
J301 Pin 39
3
GND
J301 Pins 7-10
26
SDA
J300 Pin 21
49
SDIO_D1
J301 Pin 37
4
V_INT
J301 Pin 36
27
SCL
J300 Pin 20
50
GND
J301 Pins 7-10
5
GND
J301 Pins 7-10
28
USB_D-
Not present
51
VCC
J300 Pins 7-10
6
DSR
J301 Pin 18
29
USB_D+
Not present
52
VCC
J300 Pins 7-10
7
RI
J301 Pin 17
30
GND
J301 Pins 7-10
53
VCC
J300 Pins 7-10
8
DCD
J301 Pin 11
31
RSVD
Not present
54
GND
J301 Pins 7-10
9
DTR
J301 Pin 12
32
GND
J301 Pins 7-10
55
GND
J301 Pins 7-10
10
RTS
J301 Pin 13
33
RSVD
Not present
56
ANT1
Not present
11
CTS
J301 Pin 14
34
I2S_WA
Not present4
57
GND
J301 Pins 7-10
12
TXD
J301 Pin 15
35
I2S_TXD
Not present4
58
GND
J301 Pins 7-10
13
RXD
J301 Pin 16
36
I2S_CLK
Not present4
59
ANT_DET
Not present
14
GND
J301 Pins 7-10
37
I2S_RXD
Not present4
60
GND
J301 Pins 7-10
15
PWR_ON
J301 Pin 29
38
SIM_CLK
J300 Pin 15
61
GND
J301 Pins 7-10
16
GPIO1
J301 Pin 33
39
SIM_IO
J300 Pin 14
62
ANT2
Not present
17
VUSB_DET
Not present
40
SIM_RST
J300 Pin 16
63
GND
J301 Pins 7-10
18
RESET_N
J300 Pin 26
41
VSIM
J300 Pin 13
64
GND
J301 Pins 7-10
19
GPIO6
Not present4
42
GPIO5
J301 Pin 23
65-96
GND
J301 Pins 7-10
20
GND
J301 Pins 7-10
43
GND
J301 Pins 7-10
97
RSVD
Not present
21
HOST_SELECT
J301 Pin 21
44
SDIO_D2
J301 Pin 30
98
RSVD
Not present
22
GND
J301 Pins 7-10
45
SDIO_CLK
J300 Pin 19
99
HSIC_DATA
Not present
23
GPIO2
J301 Pin 31
46
SDIO_CMD
J300 Pin 18
100
HSIC_STRB
Not present
Table 6: Interfaces of LARA-R2 series module, as routed on the 42-pin Dual-In-Line Board-to-Board connectors (J300, J301)
available on the adapter board ADP-R2 of the EVK-R2 evaluation kit
4
0R jumper can be populated in order to route the signal to the 42-pin Dual-In-Line Board-to-Board connectors

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DIL B2B J301
DIL B2B J300
Signal Name
Pin N°
Pin N°
Signal Name
Signal Name
Pin N°
Pin N°
Signal Name
Not connected
2
1
GND
Not connected
2
1
GND
Not connected
4
3
V_BCKP
Not connected
4
3
Not connected
Not connected
6
5
Not connected
Not connected
6
5
Not connected
GND
8
7
GND
VCC
8
7
VCC
GND
10
9
GND
VCC
10
9
VCC
DTR
12
11
DCD
Not connected
12
11
Not connected
CTS
14
13
RTS
SIM_IO
14
13
VSIM
RXD
16
15
TXD
SIM_RST
16
15
SIM_CLK
DSR
18
17
RI
SDIO_CMD
18
17
SDIO_D0
Not connected
20
19
Not connected
SCL
20
19
SDIO_CLK
Not connected
22
21
HOST_SELECT
Not connected
22
21
SDA
Not connected
24
23
GPIO5
Not connected
24
23
Not connected
Not connected
26
25
GPIO4
RESET_N
26
25
Not connected
Not connected
28
27
Not connected
MIC_BIAS
28
27
MIC_GND
SDIO_D2
30
29
PWR_ON
Not connected
30
29
Not connected
GPIO3
32
31
GPIO2
Not connected
32
31
Not connected
Not connected
34
33
GPIO1
SPK_N
34
33
SPK_P
V_INT
36
35
Not connected
Not connected
36
35
Not connected
Not connected
38
37
SDIO_D1
Not connected
38
37
Not connected
Not connected
40
39
SDIO_D3
Not connected
40
39
Not connected
GND
42
41
GND
GND
42
41
Not connected
Table 7: Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors (J301, J300) available on the adapter board ADP-R2
of the EVK-R2 evaluation kit for LARA-R2 series modules
☞The pins / interfaces that are not supported by a specific LARA-R2 module product version should
not be driven by an external device (see the LARA-R2 series Data Sheet [4] and the LARA-R2 series
System Integration Manual [6] for the features supported by each LARA-R2 module product
version).
1.7 Software installation
The USB drivers are available with the EVK-R2. Executable files can be downloaded from
www.u-blox.com/evk-downloads and saved to any location on the computer hard drive. The
installation can be started by running the executable file on a computer with the Windows operating
system.
1.8 Board setup
1. Insert a SIM card into the SIM card holder (J300 on the EVB).
2. Connect a cellular antenna provided with the evaluation kit box to the Primary cellular antenna
SMA connector on the ADP-R2 (ANT1, RF input/output for transmission and reception of
LTE/3G/2G RF signals)
3. Connect a cellular antenna provided with the evaluation kit box to the Secondary cellular antenna
SMA connector on the ADP-R2 (ANT2, RF input for the reception of the LTE RF signals as per

EVK-R2 - User Guide
UBX-16016088 - R10 Starting up Page 14 of 27
Down-Link Rx diversity). Place the secondary cellular antenna far enough from the primary
cellular antenna (should be more than 20 cm).
4. If the GNSS functionality is required, connect the GNSS antenna provided with the evaluation kit
box to the GNSS antenna SMA connector on the EVB. Place the GNSS antenna in a location with
a good view of the sky.
☞Since the interface to the GNSS module is not supported by LARA-R204-02B-00 /
LARA-R211-02B-00 / TOBY-R200-02B-00 / TOBY-R202-02B-00 modules, the following changes
are needed on the ADP-GNSS to appropriately provide supply to the GNSS:
oR106 = 0R, instead of not installed
oR107 = Do not install, instead of 0R
5. Connect the AC / DC +12 V power adapter provided with the evaluation kit box to the 9 –18 V
Power Input connector (J400 on the EVB). LED DL401 lights blue.
6. Be sure to provide a jumper socket on the Cellular VCC supply jumper (J404 on the EVB). This
provides the connection from the 3.8 V output of the supply circuit on the EVB to the VCC input
of the module.
7. To enable the board power supply, turn the Main power switch (SW400 on the EVB) to the ON
position. LED DL400 lights green. The cellular module switches on.
☞If the cellular module has been powered off by the AT+CPWROFF command, press the Cellular
Power-On button (SW302 on EVB) or the Cellular Reset button (SW303 on EVB) to switch on the
module again.
8. For communication via the cellular module’s USB interface, connect a USB cable to the Cellular
native USB connector (on ADP-R2). LED DS100 on ADP lights blue.
After the end of the module boot, the COM ports listed in Table 8 are enabled by the Windows
USB driver (details as the numbering of the ports can be seen via the Windows Device Manager)
5
:
Parameter
Type
Remarks
u-blox Modem USB1 AT and data
Modems
AT command interface and data communication
u-blox Modem USB2 AT and data
Ports (COM & LPT)
AT command interface and data communication
u-blox Modem USB3 AT and data
Ports (COM & LPT)
AT command interface and data communication
u-blox Modem USB4 GNSS
Ports (COM & LPT)
GNSS tunneling
u-blox Modem USB5 SAP
Ports (COM & LPT)
Remote SIM Access profile
u-blox Modem USB6 Primary Log
Ports (COM & LPT)
Diagnostic purpose
Table 8: Cellular USB interface configuration
Run an AT terminal application (e.g. the u-blox m-center tool) selecting an AT port, with these
settings:
Data rate: 115,200 bit/s
Data bits: 8
Parity: N
Stop bits: 1
Flow control: HW
See Appendix Afor how to configure the u-blox m-center AT terminal for Windows.
5
A message of “driver installation fail” may appear on Windows if the USB cable has been connected before the end of the
module boot, but this can be ignored as the normal operating functionality of the module will be available anyway after the end
of the module boot.

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9. For communication via the cellular module’s UART interface, the following connections are
allowed and can be alternatively enabled in a mutually exclusive way (see Table 9 for the switch
position and LED status):
a. Connect a USB cable to the mini USB connector (Cellular USB, J501 on EVB), LED DL501
lights blue
b. Connect an RS232 cable to the DB9 connector (Cellular RS232, J500 on EVB)
When a USB cable is connected to the mini USB connector, two COM ports are enabled in
Windows (the numbering of the COM ports can be seen via the Windows Device Manager). The
serial port for AT commands is available over the first numbered COM port opened by the driver.
Type of connections
SW401
SW403
LED
Access to cellular UART over the Cellular USB (UART) mini USB connector (J501)
ON BOARD
MINIUSB
DL403
Access to cellular UART over the Cellular RS232 (UART) DB9 connector (J500)
ON BOARD
DB9
DL405
Access to cellular UART on the DIL Board-to-Board connector on the adapter
board: cellular UART detached from USB (UART) J501 and RS232 (UART) J500
connectors
B2B
Do not care
DL404
Table 9: Serial interface configuration
Run an AT terminal application (e.g. the u-blox m-center tool) selecting an AT port, with these
settings:
Data rate: 115,200 bit/s
Data bits: 8
Parity: N
Stop bits: 1
Flow control: HW
See Appendix Afor how to configure the u-blox m-center AT terminal for Windows.
10. If the audio functionality is required, connect the headset provided with the evaluation kit box to
the Headset jack connector (J303 on EVB).
☞Audio is not supported by LARA-R204-02B and LARA-R220-62B product versions.
1.9 Enabling error result codes
Command sent by DTE (user)
DCE response (module)
Description
AT+CMEE=2
OK
Enables the cellular module to report verbose error
result codes.
1.10 PIN code insertion (when required)
Command sent by DTE (user)
DCE response (module)
Description
AT+CPIN="8180"
OK
Enter the PIN code, if needed (enter the PIN of the SIM
card –8180 is written here as an example).
AT+CLCK="SC",0,"8180"
OK
Unlock the PIN at power-on (the last parameter is the
PIN of the SIM card –8180 is written here as an
example).
AT+CLCK="SC",1,"8180"
OK
Lock the PIN at power-on (the last parameter is the PIN
of the SIM card –8180 is written here as an example).

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1.11 Registration on a cellular network
Command sent by DTE (user)
DCE response (module)
Description
AT+CREG?
+CREG: 0,1
OK
Verify the network registration.
AT+COPS=0
OK
Register the module on the network.
The cellular module automatically registers itself on
the cellular network. This command is necessary only if
the automatic registration failed (AT+CREG? returns
0,0).
AT+COPS?
+COPS: 0,0,"I TIM",7
OK
Read the operator name and radio access technology
(RAT).
For further AT command examples regarding Mobile Network Operator, Radio Access Technology,
and band selection and configuration, see the u-blox AT Commands Examples Application Note [2].
1.12 Enable audio codec configuration to provide voice capability
Command sent by DTE (user)
DCE response (module)
Description
AT+UGPIOC?
TOBY-R2 case:
+UGPIOC:
21,255
22,255
24,255
25,0
50,12
51,12
52,12
53,12
60,7
OK
LARA-R2 case:
+UGPIOC:
16,255
23,255
24,255
25,0
34,12
35,12
36,12
37,12
42,7
OK
Check the configuration of I2S pins (<gpio_id> = 50, 51,
52, 53 for TOBY-R2, <gpio_id> = 34, 35, 36, 37 for
LARA-R2): they must be configured as I2S digital audio
interface (<gpio_mode> = 12, as the factory-
programmed value) to provide voice capability at the
headset jack connector using the external audio codec
mounted on the EVK-R2.
AT+USPM?
+USPM: 1,1,0,0,2
OK
Check the audio path mode setting: both the up-link
and the down-link paths need to be configured as I2S
digital audio interfaces (e.g. <main_uplink> = 1,
<main_downlink> = 1, as the factory-programmed
value) to provide voice capability at the headset jack
connector using the external audio codec mounted on
the EVK-R2.
AT+UEXTDCONF=0,1
OK
Enable the automatic configuration of the external
Maxim MAX9860 audio codec mounted on the EVK-R2.
The setting is saved in the non-volatile memory (NVM)
and it is applied at each subsequent module power-on.
AT+CPWROFF
OK
Switch off the EVK-R2.
The external Maxim MAX9860 audio codec mounted on
the EVK-R2 will be fed by the 13 MHz master clock
provided by the GPIO6 and it will be dynamically
programmed over the I2C interface at any subsequent
re-boot of the module and every time the audio path is
enabled, providing voice capability at the headset jack
connector of the EVK-R2.
1.13 Switching off the EVK-R2
To switch off the EVK-R2, send the +CPWROFF AT command. Make sure to use this command before
switching off the main power, otherwise settings and configuration parameters may not be saved in
the internal non-volatile memory of the cellular module.

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Appendix
ASetting up AT terminal applications for
communication with EVK-R2
The u-blox m-center cellular module evaluation tool is a powerful platform for evaluating, configuring
and testing u-blox cellular products. m-center includes an AT commands terminal for communication
with the device and can be downloaded free-of-charge from our website (http://www.u-blox.com).
1. Follow the board setup instructions in section 1.8 to provide all the required connections and
switching on the cellular module.
2. Run the m-center tool: after the m-center start-up, the Home page appears.
3. On the Home page, set up the AT COM port;
for the setting values see section 1.8.
Check with the Windows Device Manager to
find out which COM port is being used by the
EVK-R2.
Figure 4: “Home” page
4. Enable the connection to u-blox cellular
module by clicking on the Connect button.
5. Retrieve the module and network information
by clicking on the Get Info button.
6. The module information is retrieved and
displayed on the Home page.
7. Click on the AT Terminal button, found at the
upper right of the Home page. A new window
opens and the AT-command terminal is now
ready for communication with the EVK-R2.
Figure 5: AT Terminal window
8. The AT terminal is ready to use.
For the complete list of AT commands
supported by the modules and their syntax,
see the u-blox AT Commands Manual [1].
For more information on using the u-blox m-center cellular module evaluation tool, press the F1 key
on the keyboard to open the m-center help window on the computer.

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BSetting up cellular packet data connection on
PC
This section describes how to set up a packet data connection with the Windows 7 operating systems
(for PC) and EVK-R2, using the TCP/IP stack of the PC (external TCP/IP stack).
The following examples describe how to install and configure two different kinds of modem on
Windows:
1. Low data rate modem, over the UART interface of the cellular module connected to the Windows
PC by the Cellular USB connector (J501 on EVB) or the Cellular RS232 connector (J500 on EVB)
2. High data rate modem, over the native USB interface of the cellular module connected to the
Windows PC by the Cellular Native USB connector on the ADP
B.1 How to install and configure a low data rate modem
connection
This example describes how to install and configure a low data rate packet data connection on a PC
with the Windows 7 operating system. This uses the TCP/IP stack of the PC over the UART interface
of the cellular module connected to the Windows PC by the Cellular USB connector (J501 on EVB) or
the Cellular RS232 connector (J500 on EVB).
1. Follow the board setup instructions in section 1.8 to provide the required connections with
EVK-R2.
2. Select “Control panel > Phones and Modem > Modems
> Add”. This opens the Install New Modem Wizard.
3. Select the Don’t detect my modem checkbox.
4. Select the Standard Modem (33,600 bit/s).

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5. Set the COM port on which the modem will be installed.
6. Select “Control panel > Phones and Modem > Modems
> Standard Modem 33,600 bps Modem > Properties”.
7. Select “Change Settings > Advanced”.
8. Add APN settings command (APN shown is just an
example. Make sure to have the correct APN defined
by the network operator).
9. Click on Change Default Preferences.
10. Click on OK twice and the new connection is now ready
to be configured.
11. To configure a new connection, select
“Control Panel > Network and Sharing Center
> Set up a new connection or network”.

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12. Select the modem, if requested (the question
appears only if more than one modem is available).
13. Enter parameters for dial-up connection:
oThe module telephone number (*99***1#)
oThe specific GPRS account information for the
network operator
oA name for the new connection (e.g. “u-blox
GPRS Connection“)
14. The packet data connection is now ready to be
used with the EVK-R2. To check the connection,
start a browser.
☞Consult the cellular network operator for the username and password. In most cases, these can
be left empty.