Ublox EVK-L4 User manual

EVK-L4
TOBY-L4 series
Cellular Evaluation Kits
User Guide
Abstract
This guide explains how to set up the EVK-L4 Evaluation Kits to
begin evaluating the u-blox TOBY-L4 series cellular modules
supporting LTE-FDD, LTE-TDD, DC-HSPA+, (E)GPRS multi-mode and
multi-band radio access technologies. The modules offer up to
301.5 Mb/s download and up to 51.0 Mb/s upload data rates with
Category 6 LTE-Advanced carrier aggregation technology.
www.u-blox.com
UBX-17013792 - R01

EVK-L4 - User Guide
UBX-17013792 - R01
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Document Information
Title
EVK-L4
Subtitle
TOBY-L4 series
Cellular Evaluation Kits
Document type
User Guide
Document number
UBX-17013792
Revision and date
R01
21-Nov-2017
Disclosure restriction
This document applies to the following products:
Name
Type number
Modem version
Application version
PCN reference
Product Status
EVK-L4006
EVK-L4006-0-00
TBD
TBD
TBD
Functional Sample
EVK-L4006-5-00
40.14
A00.01
UBX-17047934
Prototype
EVK-L4106
EVK-L4106-0-00
TBD
TBD
TBD
Functional Sample
EVK-L4106-5-00
40.14
A00.01
UBX-17047934
Prototype
EVK-L4206
EVK-L4206-0-00
TBD
TBD
TBD
Functional Sample
EVK-L4206-5-00
TBD
TBD
TBD
Functional Sample
EVK-L4906
EVK-L4906-0-00
TBD
TBD
TBD
Functional Sample
EVK-L4906-5-00
40.19
A00.02
UBX-17058711
Engineering Sample
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, visit www.u-blox.com.
Copyright © 2017, u-blox AG
Trademark Notice
u-blox is a registered trademark of u-blox Holding AG in the EU and other countries.
Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
All other registered trademarks or trademarks mentioned in this document are property of their respective owners.

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Contents
Contents..............................................................................................................................3
1Starting up....................................................................................................................4
1.1 EVK-L4 overview................................................................................................................................... 4
1.2 EVK-L4 block diagram .......................................................................................................................... 6
1.3 Switches, jumpers and buttons ............................................................................................................. 7
1.4 LEDs ..................................................................................................................................................... 8
1.5 Connectors........................................................................................................................................... 9
1.6 EVK-L4 pin out ................................................................................................................................... 10
1.6.1 Routing of TOBY-L4 modules’ pins up to connectors available on the ADP-L4 ............................. 10
1.6.2 Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors on the ADP-L4 ............................. 12
1.6.3 Routing of the TOBY-L4 modules’ UART1, UART2 and/or UART3 interface.................................. 13
1.7 Software installation........................................................................................................................... 13
1.8 Board setup........................................................................................................................................ 14
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 Switching off the EVK-L4 ................................................................................................................ 16
Appendix ..........................................................................................................................17
ASetting up AT terminal applications for communication with the EVK-L4.............17
BSetting up cellular packet data connection on PC....................................................18
CExamples of AT commands........................................................................................20
C.1 Define a default bearer for connectivity .............................................................................................. 20
DCurrent consumption measurement .........................................................................21
Declaration of conformities.............................................................................................22
Related documents ..........................................................................................................22
Revision history................................................................................................................22
Contact..............................................................................................................................23

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1Starting up
1.1 EVK-L4 overview
The EVK-L4 kits are powerful and easy-to-use tools that simplify the evaluation of u-blox TOBY-L4 series
multimode LTE Cat 6 Advanced / 3G / 2G cellular modules.
The TOBY-L4 series include the following LTE Cat 6 modules with 3G and 2G fallback:
TOBY-L4006 modules, mainly designed for operation in North America
TOBY-L4106 modules, mainly designed for operation in Europe
TOBY-L4206 modules, mainly designed for operation in Asia-Pacific and South America
TOBY-L4906 modules, mainly designed for operation in China
The TOBY-L4 series modules include the following product versions:
The "00" product versions, integrating the u-blox uCPU on-chip processor to allow customers to run their
dedicated applications on an embedded Linux distribution based on Yocto, with RIL-Core connectivity APIs
The "50" product versions, which can be controlled by an external application processor through standard
and u-blox proprietary AT commands described in the u-blox AT Commands Manual [1]
The following evaluation kits are available with u-blox TOBY-L4 cellular modules:
EVK-L4006 evaluation kits for evaluation of TOBY-L4006 modules, and in details:
oThe EVK-L4006-0 evaluation kit including a TOBY-L4006-00A module
oThe EVK-L4006-5 evaluation kit including a TOBY-L4006-50A module
EVK-L4106 evaluation kits for evaluation of TOBY-L4106 modules, and in details:
oThe EVK-L4106-0 evaluation kit including a TOBY-L4106-00A module
oThe EVK-L4106-5 evaluation kit including a TOBY-L4106-50A module
EVK-L4206 evaluation kits for evaluation of TOBY-L4206 modules, and in details:
oThe EVK-L4206-0 evaluation kit including a TOBY-L4206-00A module
oThe EVK-L4206-5 evaluation kit including a TOBY-L4206-50A module
EVK-L4906 evaluation kits for evaluation of TOBY-L4906 modules, and in details:
oThe EVK-L4906-0 evaluation kit including a TOBY-L4906-00A module
oThe EVK-L4906-5 evaluation kit including a TOBY-L4906-50A module
This document identifies all the EVK-L4006, EVK-L4106, EVK-L4206, and EVK-L4906 evaluation kits as EVK-L4.
See the TOBY-L4 series Data Sheet [2] and the TOBY-L4 series System Integration Manual [3] for the
features supported by the u-blox TOBY-L4 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 –J104
TOBY-L4
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
(UART0/UARTx)
J501
Cellular RS232
(UART0)
J500
DL501DL403 DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
DS132
DS118
DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
Primary
Cellular antenna connector
ANT1 –J105
Micro SD Card - J302
RJ45 Ethernet Connector
J305
Wi-Fi antenna connector
WL_ANT - J303
Cellular native USB
J102
ELLA-W1
Wi-Fi module
DS100
SW510
UART2 jumpers –J108
UART1 jumpers –J107
UART3 jumpers –J109
Headset jack
J303
TP100
TP101
DL503
Figure 1: Overview of the EVK-L4 evaluation kit for TOBY-L4 modules

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1.2 EVK-L4 block diagram
Figure 2 shows the main interfaces and internal connections of the EVK-L4 evaluation kit:
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
EVB-WL3
GNSS
module
GNSS adapter board
RF
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)
USB
UART0 / UARTx
converter
Cellular USB
(UART0 / UARTx)
(J501)
Cellular RS232
(UART0)
(J500)
RS232
UART0
converter UART0
MiniUSB/DB9
switch
(SW403)
On-Board/B2B
switch
(SW401)
UARTx
UARTx switch
(SW510)
TOBY-L4 adapter board
TOBY-L4
Cellular
module
42-pin DIL B2B connector (J200) 42-pin DIL B2B connector (J201)
Native
USB
(J102)
ANT1
(J105)
ANT2
(J104)
ELLA-W1
Wi-Fi
module
ANT WL
(J303)
ETH
RJ45
(J305)
ETH
PHY
MicroSD
(J302)
3.8 V
VCC
UART1
UART2
UART3
J107
J108
J109
Analog Audio
MIC1 / SPK
eMMCRGMII
USB 2.0/3.0
Figure 2: Block diagram of EVK-L4 for TOBY-L4 modules
The EVK-L4 is formed by three boards:
The lower one, called EVB-WL3, contains the power supply and other peripherals for the TOBY-L4 series
cellular module (as SIM card holder, Headset jack, Reset button and Power-on button).
The cellular adapter board, called ADP-L4, contains the TOBY-L4 cellular module, the cellular antenna
connectors, the USB connector, the Ethernet RJ45 connector, and the MicroSD connector for the cellular
module, and it also contains the u-blox ELLA-W1 series Wi-Fi module and the Wi-Fi antenna connector.
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), 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 only partially described in Figure 1 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
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 UART0 detach
Slide switch to attach / detach cellular module UART from the USB / RS232 connectors:
when detached, UART signals available only on the DIL B2B connector on the ADP board
SW401
EVB
Cellular UART0 routing
Slide switch to select cellular module UART routing on the USB or on the RS232 connector
SW403
EVB
Cellular UARTx detach
Slide switch to attach / detach cellular module UARTx from the USB connector: when
detached, UARTx signals available only on the DIL B2B connector on the ADP board
SW510
EVB
Cellular UART1 jumpers
Jumper sockets to attach / detach cellular module UART1 interface to UARTx signals
available on the DIL B2B connector on the ADP board
J107
ADP-L4
Cellular UART2 jumpers
Jumper sockets to attach / detach cellular module UART2 interface to UARTx signals
available on the DIL B2B connector on the ADP board
J108
ADP-L4
Cellular UART3 jumpers
Jumper sockets to attach / detach cellular module UART3 interface to UARTx signals
available on the DIL B2B connector on the ADP board
J109
ADP-L4
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 the 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 the 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: Description of EVK-L4 switches and buttons

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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 into the Cellular native USB connector
DS100
ADP-L4
Cellular USB (UART0/UARTx)
USB cable plugged into the Cellular USB connector for UART0 / UARTx access
DL501
EVB
Cellular USB / UART0
Green light is activated when the UART0 is routed to the Cellular USB connector
Red light blinks at UART0 TX or RX data on the Cellular USB connector
DL403
EVB
Cellular UART0 detach
UART0 signals are available only on the DIL B2B connector on the ADP board
DL404
EVB
Cellular RS232 / UART0
Green light is activated when UART0 is routed to the Cellular RS232 connector
Red light blinks at UART0 TX or RX data on the Cellular RS232 connector
DL405
EVB
Cellular USB / UARTx
Green light is activated when UARTx is routed to the Cellular USB connector
Red light blinks at UARTx TX or RX data on the Cellular USB connector
DL503
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 DDC (I2C) interface
DS132
ADP-GNSS
Table 2: Description of EVK-L4 LEDs

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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)
J105
ADP-L4
Secondary cellular antenna
SMA connector for the cellular module secondary antenna (ANT2, Rx)
J104
ADP-L4
Wireless LAN antenna
SMA connector for the wireless LAN module antenna (WL_ANT, Tx/Rx)
J303
ADP-L4
Cellular native USB
Micro USB 3.0 type B connector for the cellular module native USB interface
J102
ADP-L4
Cellular USB
(UART/UARTx)
Mini USB 2.0 type B connector for the cellular module UART0 and UART1/2/3 interfaces
converted as USB interface
J501
EVB
Cellular RS232 (UART0)
DB9 connector for the cellular module UART0 interface converted as an RS232 interface
J500
EVB
Micro SD
Micro SD Card connector for the cellular module eMMC interface
J302
ADP-L4
Ethernet
RJ45 Gigabit Ethernet connector for the cellular module RGMII interface converted as a
Gigabit Ethernet interface
J305
ADP-L4
DIL B2B headers
Dual-In-Line Board-to-Board connectors for the cellular module interfaces
J200-J201
ADP-L4
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 the GNSS adapter board)
BT200
EVB
GND
Ground terminals for the probe reference
J402, J403
J405, J406
EVB
Table 3: Description of EVK-L4 connectors
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!

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1.6 EVK-L4 pin out
1.6.1 Routing of TOBY-L4 modules’pins up to connectors available on the ADP-L4
TOBY-L4
Connector
TOBY-L4
Connector
TOBY-L4
Connector
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
1
RSVD
-
32
GND
J201 Pins 7-10
63
SDIO_D2
Routed to Wi-Fi
2
GND
J201 Pins 7-10
33
ETH_TX_CTL
Routed to PHY
64
SDIO_CLK
Routed to Wi-Fi
3
V_BCKP
J201 Pin 3
34
ETH_TXD3
Routed to PHY
65
SDIO_CMD
Routed to Wi-Fi
4
VUSB_DET
J102 Pin 1
35
ETH_TXD2
Routed to PHY
66
SDIO_D0
Routed to Wi-Fi
5
V_INT
J201 Pin 36
36
ETH_TXD1
Routed to PHY
67
SDIO_D3
Routed to Wi-Fi
6
RSVD
-
37
ETH_TXD0
Routed to PHY
68
SDIO_D1
Routed to Wi-Fi
7
RSVD
-
38
ETH_RXD0
Routed to PHY
69
GND
J201 Pins 7-10
8
RSVD
-
39
ETH_RXD1
Routed to PHY
70
VCC
J200 Pins 7-10
9
RSVD
-
40
ETH_RXD2
Routed to PHY
71
VCC
J200 Pins 7-10
10
DSR
J201 Pin 18
41
ETH_RXD3
Routed to PHY
72
VCC
J200 Pins 7-10
11
RI
J201 Pin 17
42
ETH_RX_CTL
Routed to PHY
73
GND
J201 Pins 7-10
12
DCD
J201 Pin 11
43
ETH_RX_CLK
Routed to PHY
74
GND
J201 Pins 7-10
13
DTR
J201 Pin 12
44
GND
J201 Pins 7-10
75
ANT_DET
J105 and J104
14
RTS
J201 Pin 13
45
RSVD
-
76
GND
J201 Pins 7-10
15
CTS
J201 Pin 14
46
GND
J201 Pins 7-10
77
RSVD
-
16
TXD
J201 Pin 15
47
RSVD
-
78
GND
J201 Pins 7-10
17
RXD
J201 Pin 16
48
RSVD
-
79
GND
J201 Pins 7-10
18
TXD3
J109 Pin 2
49
RSVD
-
80
GND
J201 Pins 7-10
19
RXD3
J109 Pin 4
50
I2S_WA
J200 Pin 25
81
ANT1
J105
20
PWR_ON
J201 Pin 29
51
I2S_TXD
J200 Pin 24
82
GND
J201 Pins 7-10
21
GPIO1
J201 Pin 33
52
I2S_CLK
J200 Pin 22
83
GND
J201 Pins 7-10
22
GPIO2
J201 Pin 31
53
I2S_RXD
J200 Pin 23
84
RSVD
-
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
J104
26
HOST_SELECT0
J201 Pin 2
57
SIM_IO
J200 Pin 14
88
GND
J201 Pins 7-10
27
USB_D-
J102 Pin 2
58
SIM_RST
J200 Pin 16
89
GND
J201 Pins 7-10
28
USB_D+
J102 Pin 3
59
VSIM
J200 Pin 13
90
GND
J201 Pins 7-10
29
ETH_TX_CLK
Routed to PHY
60
GPIO5
J201 Pin 23
91
RSVD
-
30
GND
J201 Pins 7-10
61
GPIO6
J201 Pin 24
92
GND
J201 Pins 7-10
31
RSVD
-
62
HOST_SELECT1
J201 Pin 34
93-152
GND
J201 Pins 7-10

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TOBY-L4
Connector
TOBY-L4
Connector
TOBY-L4
Connector
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
153
RSVD
-
185
RSVD
-
217
MMC_D2
J302 Pin 1
154
RSVD
-
186
RSVD
-
218
MMC_CD_N
-
155
RSVD
-
187
RSVD
-
219
GND
J201 Pins 7-10
156
RSVD
-
188
RSVD
-
220
ETH_INTR
Routed to PHY
157
RSVD
-
189
RSVD
-
221
V_ETH
Routed to PHY
158
RSVD
-
190
RSVD
-
222
ETH_MDIO
Routed to PHY
159
TXD1
J107 Pin 2
191
RSVD
-
223
ETH_MDC
Routed to PHY
160
RXD1
J107 Pin 4
192
RSVD
-
224
RSVD
-
161
TXD2
J108 Pin 2
193
RTS1
J200 Pin 29
225
RSVD
-
162
RXD2
J108 Pin 4
194
RSVD
-
226
GND
J201 Pins 7-10
163
RSVD
-
195
CTS1
J200 Pin 30
227
SPK_P
J200 Pin 33
164
RSVD
-
196
RSVD
-
228
SPK_N
J200 Pin 34
165
RSVD
-
197
RSVD
-
229
GND
J201 Pins 7-10
166
RSVD
-
198
RSVD
-
230
MIC_GND
J200 Pin 27/11
167
RSVD
-
199
RSVD
-
231
MIC_BIAS
-
168
USB_ID
J102 Pin 4
200
RSVD
-
232
GND
J201 Pins 7-10
169
SPI_MISO
J200 Pin 17
201
RSVD
-
233
MIC2_N
J200 Pin 28
170
USB_SSRX+
J102 Pin 7
202
RSVD
-
234
MIC2_P
J200 Pin 28
171
USB_SSRX–
J102 Pin 6
203
SCL1
J200 Pin 36
235
GND
J201 Pins 7-10
172
VSIM1
J200 Pin 2
204
SDA1
J200 Pin 37
236
MIC1_N
J200 Pin 12
173
SPI_CS
J201 Pin 39
205
I2S1_WA
J200 Pin 41
237
MIC2_P
J200 Pin 12
174
SPI_MOSI
J200 Pin 18
206
I2S1_TXD
J200 Pin 40
238
GND
J201 Pins 7-10
175
USB_SSTX+
J102 Pin 10
207
I2S1_RXD
J200 Pin 39
239
ADC2
TP101
176
USB_SSTX–
J102 Pin 9
208
I2S1_CLK
J200 Pin 38
240
ADC1
TP100
177
SIM1_RST
J200 Pin 5
209
GND
J201 Pins 7-10
241
GND
J201 Pins 7-10
178
SIM1_IO
J200 Pin 3
210
V_MMC
-
242
RSVD
-
179
SPI_SCLK
J200 Pin 19
211
MMC_RST_N
-
243
RSVD
-
180
RSVD
-
212
MMC_D1
J302 Pin 8
244
RSVD
-
181
RSVD
-
213
MMC_D3
J302 Pin 2
245
RSVD
-
182
SIM1_CLK
J200 Pin 4
214
MMC_D0
J302 Pin 7
246
RSVD
-
183
RSVD
-
215
MMC_CMD
J302 Pin 3
247
GPIO8
J200 Pin 35
184
RSVD
-
216
MMC_CLK
J302 Pin 5
248
GPIO7
J200 Pin 6
Table 4: Interfaces of TOBY-L4 series modules, as routed up to the 42-pin Dual-In-Line Board-to-Board connectors (J200, J201)
and up to other connectors available on the adapter board ADP-L4 of the EVK-L4 evaluation kit
The pins / interfaces that are not supported by a specific TOBY-L4 module product version should not be
driven by an external device (see the TOBY-L4 series Data Sheet [2] and the TOBY-L4 series System
Integration Manual [3] for the features supported by each TOBY-L4 module product version).

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1.6.2 Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors on the ADP-L4
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
VSIM1
2
1
GND
Not connected
4
3
V_BCKP
SIM1_CLK
4
3
SIM1_IO
Not connected
6
5
Not connected
GPIO7
6
5
SIM1_RST
GND
8
7
GND
VCC
8
7
VCC
GND
10
9
GND
VCC
10
9
VCC
DTR
12
11
DCD
MIC2
12
11
MIC2_GND
CTS
14
13
RTS
SIM_IO
14
13
VSIM
RXD
16
15
TXD
SIM_RST
16
15
SIM_CLK
DSR
18
17
RI
SPI_MOSI
18
17
SPI_MISO
RXDx
20
19
TXDx
SCL
20
19
SPI_CLK
Not connected
22
21
Not connected
I2S_CLK
22
21
SDA
GPIO6
24
23
GPIO5
I2S_TXD
24
23
I2S_RXD
Not connected
26
25
GPIO4
RESET_N
26
25
I2S_WA
Not connected
28
27
Not connected
MIC1
28
27
MIC1_GND
Not connected
30
29
PWR_ON
CTS1
30
29
RTS1
GPIO3
32
31
GPIO2
RXD2
32
31
TXD2
HOST_SELECT1
34
33
GPIO1
SPK_N
34
33
SPK_P
V_INT
36
35
Not connected
SCL1
36
35
GPIO8
Not connected
38
37
Not connected
I2S1_CLK
38
37
SDA1
Not connected
40
39
SPI_CS
I2S1_TXD
40
39
I2S1_RXD
GND
42
41
GND
GND
42
41
I2S1_WA
Table 5: Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors (J201, J200) available on the adapter board ADP-L4
The pins / interfaces that are not supported by a specific TOBY-L4 module product version should not be
driven by an external device (see the TOBY-L4 series Data Sheet [2] and TOBY-L4 series System Integration
Manual [3] for the features supported by each TOBY-L4 module product version).

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1.6.3 Routing of the TOBY-L4 modules’ UART1, UART2 and/or UART3 interface
1
3
1
3
1
3
2
4
2
4
2
4
EVB-WL3
USB
UART0 / UARTx
converter
Cellular USB
(UART0 / UARTx)
(J501)
UARTx switch
(SW510)
TOBY-L4 adapter board
TOBY-L4
Cellular
module
DIL B2B connector
UART1
UART2
UART3
J107
J108
J109
UARTx
Figure 3: Overview of the TOBY-L4 module UART1, UART2 and/or UART3 interface routing possible through the 4-pin Dual-In-
Line header connectors J107, J108 and J109 available on the ADP-L4 adapter board, and the related pin-out layout
DIL header J107
DIL header J108
DIL header J109
Signal
Pin N°
Pin N°
Signal
Signal
Pin N°
Pin N°
Signal
Signal
Pin N°
Pin N°
Signal
TXDx
1
2
TXD_1
TXDx
1
2
TXD_2
TXDx
1
2
TXD_3
RXDx
3
4
RXD_1
RXDx
3
4
RXD_2
RXDx
3
4
RXD_3
Table 6: Pin-out of the 4-pin Dual-In-Line header connectors J107, J108 and J109 available on the ADP-L4 adapter board to route
the UART1, UART2 and/or UART3 interface of the TOBY-L4 module up to the DIL B2B connector, and the Cellular USB connector
Two jumper sockets need to be inserted on the related 4-pin DIL header in order to provide the connection
of the UART1 (using the 4-pin DIL header J107), or the UART2 (using the 4-pin DIL header J108), or the
UART3 (using the 4-pin DIL header J109), inserting one jumper socket on pins 1 and 2, and one jumper
socket on pins 3 and 4.
The connection of the UART1, UART2 and UART3 interface is mutually exclusive: only one interface at a
time can be connected from the module up to the DIL B2B connector and the Cellular USB connector.
The pins / interfaces that are not supported by a specific TOBY-L4 module product version should not be
driven by an external device (see the TOBY-L4 series Data Sheet [2] and the TOBY-L4 series System
Integration Manual [3] for the features supported by each TOBY-L4 module product version).
1.7 Software installation
The USB drivers are available with the EVK-L4. 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.

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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-L4 (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-L4 (ANT2, RF input for the reception of the LTE RF signals as per 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 ADP-GNSS. Place the antenna in a location with a good view of the
sky.
5. If the Wi-Fi functionality is required, connect the Wi-Fi antenna provided with the evaluation kit box to the
Wi-Fi antenna SMA connector on the ADP-L4 (WL ANT, RF input/output for transmission and reception of
Wi-Fi RF signals). Place the Wi-Fi antenna far enough away from cellular antennas (should be more than
20 cm).
6. 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.
7. 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.
8. To enable the board power supply, turn the Main power switch (SW400 on the EVB) to the ON position.
LED DL400 lights green.
9. To switch on the cellular module, press the Cellular Power-On button (SW302 on EVB).
10. For communication via the cellular module’s USB interface, connect a USB cable to the Cellular native USB
connector (on ADP-L4). LED DS100 on ADP lights blue.
After the end of the module boot, the COM ports and network interface listed in Table 7 are enabled by the
Windows USB driver (details of the numbering of the ports can be seen via the Windows Device Manager)1:
Parameter
Type
Remarks
u-blox Modem USB1 AT and Data
Ports (COM & LPT)
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 Primary Log
Ports (COM & LPT)
Trace log capture (diagnostic purpose)
u-blox Modem USB4
Ports (COM & LPT)
“00” product versions - Linux console for uCPU API
development and debug
“50” product versions - Auxiliary channel for audio tuning
u-blox Modem
Network adapters
Ethernet-over-USB virtual channel (CDC-NCM)
Table 7: Cellular USB interface configuration
Run an AT terminal application (e.g. the u-blox m-center tool) selecting an AT port, with these settings:
oData rate: 115200 bit/s
oData bits: 8
oParity: N
oStop bits: 1
oFlow control: HW
1A 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 anyway available after the end of the module boot.

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See Appendix A for how to configure the u-blox m-center AT terminal for Windows.
11. For communication via the cellular module’s UART interfaces, the following connections are allowed and can
be alternatively enabled in a mutually exclusive way (see Table 8 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):
oThe UART0 interface is available over the first numbered COM port opened by the driver.
oThe UART1, UART2 or UART3 interface is available over the second numbered COM port opened by the
driver, according to the J107, J108 and J109 4-pin DIL headers setting on the ADP-L4 (see section 1.6.3)
Type of connections
SW401
SW403
SW510
LED
Access to cellular UART0 over the Cellular USB mini USB connector (J501)
ON BOARD
MINIUSB
Do not care
DL403
Access to cellular UART1/2/3 over the Cellular USB mini USB connector (J501)
ON BOARD
MINIUSB
UART1
DL503
Access to cellular UART0 over the Cellular RS232 DB9 connector (J500)
ON BOARD
DB9
Do not care
DL405
Access to cellular UARTs on DIL Board-to-Board connector on the ADP-L4:
cellular UARTs detached from mini USB J501 and DB9 J500 connectors
B2B
Do not care
DISABLE
DL404
Table 8: Serial interface configuration
Run a terminal application selecting the proper port, with these settings:
oData rate: 115200 bit/s
oData bits: 8
oParity: N
oStop bits: 1
12. If the audio functionality is required, connect the headset provided with the evaluation kit box to the
Headset jack connector (J303 on EVB).
13. If the Gigabit Ethernet functionality is required, insert an Ethernet cable into the RJ45 Ethernet connector
(J305 on ADP-L4).
14. If Micro SD functionality is required, insert a Micro SD card into the Micro SD connector (J302 on the
ADP-L4).
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).
1.12 Switching off the EVK-L4
To switch off the EVK-L4, 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 the EVK-L4
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-L4.
Figure 4: “Home” page
4. Enable the connection to the 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-L4.
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 PCs)
and EVK-L4, using the TCP/IP stack of the PC (external TCP/IP stack).
The following example describes how to configure the Windows PC to use the module as a high data rate
mobile router, over the native USB interface of the cellular module connected by the Cellular Native USB
connector on the ADP.
1. Open the "Network and Sharing Center" and click
on the "Local Area Connection" associated with
the NCM interface.
Figure 6: Network and Sharing Center
2. Click on the "Properties" button.
Figure 7: Local area connection status

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3. Search for "Internet Protocol Version 4 (TCP/IPv4)"
and click on "Properties".
Figure 8: Local area connection properties
4. Check the option "Obtain an IP address
automatically".
5. Then check the "Obtain DNS server address
automatically" option.
6. Press the "OK" button and then follow the
instructions in section C.1.
Figure 9: IPv4 (TCP/IPv4) properties

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CExamples of AT commands
For the complete description and syntax of the AT commands supported by TOBY-L4 series modules, see the
u-blox AT commands Manual [1].
C.1 Define a default bearer for connectivity
To change the PDN settings for a default EPS bearer, edit the <cid>=1 PDN by means of the AT+CGDCONT AT
command.
Command sent by DTE (user)
DCE response (module)
Description
AT+COPS?
+COPS: 0,0,"operator",2
OK
Module is registered.
AT+CREG=2;+CGREG=2;+CEREG=2;+CGE
REP=1,1;
OK
Enable a set of registration URC, including
PS, CS and EPS registration events.
AT+CGDCONT?
+CGDCONT: 1,"IPV4V6","","",0,0
OK
Read IP Type and APN for EPS attach bearer.
AT+CGDCONT=1,"IPV4V6","broadband
"
OK
Set APN name (i.e. “broadband”) and the
PDP type (i.e. “IPV4V6”) for EPS attach
bearer.
AT+CGACT=1,1
OK
Activate PDP context.
AT+CGDCONT?
+CGDCONT: 1,"IP","broadband","1
0.161.139.112",0,0
OK
Verify the activation of PDP context and
check its IP address.