NL-SWDK2 Datasheet

‘ NimbeLink® Smart. Simple. Cellular. @ NImbeLink Corp, 2020, All rights reserved. NImbeL‘lnk Corp pier/ides Inns documenlalzon lrl supporl ol lls producls luv me inlemal use ul ‘rls curvenl and prospsclwe wslomers The publrcanon 0! ml: comment does nor wane any olhsv ngnr or license ln any pany lo use any donlenl cunlained In or ralened «0 In thls downrenl and any modIflosllovl or ledlslnbullm at mls doaurnenr rs nul wrnmad While eflona are made to ensure accuracy. rypograpnrcal and omer emxs may exrsl In lrris documem NimbeLInk leserves (he ngrn lo modlly or dlsconlmue us pvodums and la modlry Ims and any other producl documenlauon ax any rune All NlmbeLmk producls are sold subpcx la na publrsnad Terms and Commons, sum lo any sepavale lenna agreed wllh its cuaronm No wananry al any rype ls extended by punlrcaunn a! [his documenlallovl, lncludmg. m1 nol llm-Ied In. lmplled wananllas a! memhanlablllly. mness tor a parllwlal purpose and nun-lnlvlngemem NImbeLlnk rs a reglsleved trademark. and Skywlm rs a mglsleved lvademalk. ol NImbeLInk Corp, All uademam. service marks and srmrlar oesrgnauons raleranded In Ihls dacumenl are ma pruoefly ol Ihalr rsspecm owners,
NL-SWDK2 Datasheet
NimbeLink Corp
Updated: November 2020
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 1
Table of Contents
Table of Contents 2
Introduction 3
Contact Information 3
Orderable Part Numbers 3
Additional Resources 3
Technical Specifications 4
Overview 4
Electrical Specifications 4
ESD Warning 4
Absolute Maximum and Minimum Ratings 4
Board Connectors 5
Skywire Modem Socket Pinout 5
Arduino Interface Pinout 6
Grove Connector Pinouts 7
Mechanical Characteristics 8
Mechanical Drawing 8
Mechanical Specifications 8
Environmental Specifications 8
Hardware Description 9
Block Diagram 9
Modem Placement 10
Power 10
USB Communication 11
UART Communication 11
UART Selection 12
ON_OFF Control 12
Power On 12
Power Off 13
SW1 DIP Switch 13
User Button 13
User LED 13
Grove Connectors 14
Version Information 15
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 2
groductsupgon@nimbelink.com sales@nimbelink.com Skywire Software Develogers Guide Skywire Hardware Develogers Guide NL-SWDK2 Product Page NL»SWDK2 Schematic NL»SWDK2 Altium Design Files
1. Introduction
This document serves as the hardware datasheet for the Skywire Development Kit
Version 2 platform. Throughout this document document the Skywire Development Kit
Version 2 will be referred to by its abbreviated name, SWDK2, or by its part number,
NL-SWDK2.
1.1 Contact Information
NimbeLink’s goal is to make integrating Skywire modems into end-user applications
as easy as possible. Please send any feedback, documentation requests, or technical
support questions to NimbeLink’s product support team at:
product.support@nimbelink.com
For purchasing information, please visit the "Part Ordering Information" section on the
adapter's product page. Any additional sales questions or requests for quotation can
be directed to NimbeLink’s sales team at:
sales@nimbelink.com
1.2 Orderable Part Numbers
*This modem is compatible with all Skywire modems using the standard Skywire interface. This development kit is not compatible
with Skywire Nano products.
1.3 Additional Resources
●Skywire Software Developers Guide
●Skywire Hardware Developers Guide
●NL-SWDK2 Product Page
●NL-SWDK2 Schematic
●NL-SWDK2 Altium Design Files
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 3
Orderable Device
Compatible Modems
Operating
Temperature
NL-SWDK2
All Skywires*
-40 ̊C to +85 ̊C
Parameter Min. Rating Main Power Supply Input (J15) J15-1
2. Technical Specifications
2.1 Overview
The SWDK2 is a versatile standalone and Arduino compatible Skywire Development
kit for the Skywire modem that allows for the rapid prototyping of a variety of IOT
applications. The kit allows for the easy addition of Skywire modems to Machine to
Machine (M2M) systems with an Arduino interface and for using the Skywire by itself
over a USB interface with a host PC. This adapter is compatible with all Skywire
modems using the standard Skywire interface.
This development kit is designed to allow for the easy evaluation of the Skywire
modem in many applications including, but not limited to:
- Telematics platforms
- Asset Tracking
- Industrial Monitoring
- Internet Connectivity
- Agricultural Monitoring
- Smart Cities
- Smart Utilities
- Fleet Management
2.2 Electrical Specifications
2.2.1 ESD Warning
This device is an ESD sensitive device. Proper ESD handling precautions should be
used when handling this device.
2.2.2 Absolute Maximum and Minimum Ratings
To avoid potential damage to the modem, ensure that all voltages applied to the
development kit listed below do not fall outside of the ranges specified by the
maximum and minimum ratings:
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 4
Parameter
Pin(s)
Min. Rating
Max. Raing
Main Power Supply Input (J15)
J15-1
5.0V
15V
Pin Name Dirac "on Description Min Max (J14) VCC Inpul Main Power Supply Pin 4_ov (J14) DOUT Ouxpux Nox Connecxed 0V VREF (J1-3) DIN Inpul Nox Connecxed 0V VREF (J14) GND - Ground Pin 0V (J1-5) nRESET Inpul Modem resex signal 0V 1.8V (J1-6) VUSB Inpul USB connechon delechon 5_ov (J14) USE} do use differemial daxa bus m _ “1%) USB_N ‘10 USB dufferennal daxa bus (-) _ (J1_9) DTR Inpul Daxa xerminal ready, Tied low, 0V VREF (J1-10) GND - Ground Pln 0v (J2-1) GND - Ground Pin W “2.2) CTS Ouxpux Modem CTS Pm 0V VREF (J2-3) Ouxpux Modem slams pm 0V 1.8V (J24) VREF Inpul \IO signals 0V VREF (J2-5) GND - Ground Pin 0v (J2-6) RTS Inpul Modem RTS Pm 0V VREF Modem GP‘O pin 0V 1.8V (J2-7) GP\O_3 \IO Modem GP‘O pin 0V 1.8V (JZ-B) GP\072 \IO 02-9) RING/ADC vo Pm 0v 13V (J2-10) °N7°FF "‘9“ Driven b us, 0V 1-8V
2.3 Board Connectors
2.3.1 Skywire Modem Socket Pinout
The following table details the pinout of the Skywire modem socket on the
development kit.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 5
Pin
Name
Direction
Description
Min
1
(J1-1)
VCC
Input
Main Power Supply Pin
2
(J1-2)
DOUT
Output
Not Connected
0V
3
(J1-3)
DIN
Input
Not Connected
0V
4
(J1-4)
GND
-
Ground Pin
5
(J1-5)
nRESET
Input
Modem reset signal
0V
6
(J1-6)
VUSB
Input
USB connection detection
7
(J1-7)
USB_P
I/O
USB differential data bus (+)
8
(J1-8)
USB_N
I/O
USB differential data bus (-)
9
(J1-9)
DTR
Input
Data terminal ready. Tied low.
0V
10
(J1-10)
GND
-
Ground Pin
11
(J2-1)
GND
-
Ground Pin
12
(J2-2)
CTS
Output
Modem CTS Pin
0V
13
(J2-3)
ON/nSLEEP
Output
Modem status pin
0V
14
(J2-4)
VREF
Input
Voltage reference for offboard
I/O signals
0V
15
(J2-5)
GND
-
Ground Pin
16
(J2-6)
RTS
Input
Modem RTS Pin
0V
17
(J2-7)
GPIO_3
I/O
Modem GPIO pin
0V
18
(J2-8)
GPIO_2
I/O
Modem GPIO pin
0V
19
(J2-9)
RING/ADC
I/O
Modem ADC or Ring Indicator
Pin
0V
20
(J2-10)
ON_OFF
Input
Modem ON_OFF Control.
Driven by U3.
0V
2.3.2 Arduino Interface Pinout
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 6
Conn.
Pin
Arduino Name
Dev Kit Assignment
Description
J12
1
D0
UART_RX1
UART RX connection for Arduino interface connected to
Skywire modem DOUT pin through onboard MUX.
2
D1
UART_TX1
UART TX connection for Arduino interface connected to
Skywire modem DIN pin through onboard MUX.
3
D2
UART_RX2
UART RX connection for Arduino interface connected to
Skywire modem DOUT pin through onboard MUX.
4
D3
LED_ORANGE
GPIO control for Orange channel of onboard tricolor LED.
5
D4
SKY_CTS
Arduino GPIO control for Skywire CTS pin.
6
D5
SKY_RTS
Arduino GPIO control for Skywire RTS pin.
7
D6
PWR_nENABLE
Arduino GPIO control for Skywire 4V0 regulator PWR
nEnable pin.
8
D7
SKY_DTR
Arduino GPIO control for Skywire DTR pin.
J10
1
D8
UART_TX2
UART TX connection for Arduino interface connected to
Skywire modem DIN pin through onboard MUX.
2
D9
SKY_RESET
Arduino GPIO control for Skywire Reset Line.
3
D10
SKY_ADC/RING
Arduino GPIO connection for monitoring Skywire
ADC/RING pin.
4
D11
GROVE_IO3
Arduino GPIO connection to Grove Connector J8.
5
D12
LED_BLUE/
GROVE_IO4
Arduino GPIO connection to Grove Connector J8 and
control pin for blue LED channel on D7.
6
D13
LED_GREEN
Arduino GPIO control pin for green LED channel on D7.
7
GND
System Ground
System Ground Pin.
8
AREF
Arduino Analog
Reference
Arduino Analog Reference Pin
9
I2C_SDA
Arduino I2C SDA
Arduino I2C SDA pin connected to Grove Connector J7
and J9.
10
I2C_SCL
Arduino I2C SCL
Arduino I2C SCL pin connected to Grove Connector J7
and J9.
J13
6
A0
SKY_ON_OFF_SW
Arduino GPIO connection for controlling modem ON_OFF
circuitry.
5
A1
GROVE_IO1
Arduino GPIO connection to Grove connector J6.
4
A2
GROVE_IO2
Arduino GPIO connection to Grove connector J6.
3
A3
SKY_ONSLEEP_VREF
Arduino GPIO connection for monitoring Skywire Pin 13.
2
A4
SKY_DIO3_VREF
Arduino GPIO connection for monitoring Skywire Pin 17.
1
A5
SKY_DIO2_VREF
Arduino GPIO connection for monitoring Skywire Pin 18.
J11
1
VCC_VIN
VCC_VIN
System power input. Connected to Skywire power IC U5.
2
Ground
Ground
System Ground Pin.
3
Ground
Ground
System Ground Pin.
4
VCC_ARD_5V0
VCC_ARD_5V0
Arduino interface 5.0V power rail.
5
VCC_ARD_3V3
VCC_ARD_3V3
Arduino interface 3.3V power rail.
6
ARD_RESET
ARD_RESET
Arduino interface reset pin.
7
VCC_ARD_IOREF
VCC_ARD_IOREF
Arduino interface IO reference.
8
NC
NC
Pin not connected.
2.3.3 Grove Connector Pinouts
The table below contains the pinout for the four grove connectors on the development
kit. By default, connectors J6 and J7 are not populated (NP).
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 7
Conn.
Pin
Arduino Pin
Connection
Dev Kit
Assignment
Description
J7 (NP),
J9
1
Ground
Ground
System Ground Pin.
2
Arduino_SDA
Grove_SDA
Grove pin connected to Arduino interface I2C data IO.
3
Arduino_SCL
Grove_SCL
Grove pin connected to Arduino interface I2C data IO.
4
VCC_ARD_IOREF
(J11-7)
VCC_VREF
Grove Sensor VCC power connected to system reference
voltage. Available power is subject to host board limitations.
J6 (NP)
1
Ground
Ground
System Ground Pin.
2
A2
GROVE_IO2
Grove pin connected to Arduino interface pin A1.
3
A1
GROVE_IO1
Grove pin connected to Arduino interface pin A1.
4
VCC_ARD_IOREF
(J11-7)
VCC_VREF
Grove Sensor VCC power connected to system reference
voltage. Available power is subject to host board limitations.
J8
1
Ground
Ground
System Ground Pin.
2
D12
GROVE_IO4
Grove pin connected to Arduino interface pin D12.
3
D11
GROVE_IO3
Grove pin connected to Arduino interface pin D11.
4
VCC_ARD_IOREF
(J11-7)
VCC_VREF
Grove Sensor VCC power connected to system reference
voltage. Available power is subject to host board limitations.
Parameter Min Typical Max Unit Operating Temperature -40 +25 +85 ”C Storage Temperature -40 +25 +85 ”C
2.4 Mechanical Characteristics
2.4.1 Mechanical Drawing
2.4.2 Mechanical Specifications
2.4.3 Environmental Specifications
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 8
Parameter
Typical
Unit
Dimensions
78.1 x 53.3 x 23.1
mm
Weight
32
Grams
Connector Insertion/Removal
10
Cycles
Parameter
Min
Typical
Max
Unit
Note
Operating Temperature
-40
+25
+85
˚C
Storage Temperature
-40
+25
+85
˚C
Operating Humidity
20
90
%
Non-condensing
skywhe Imelfnce Madam Inlerlnm Pins Skyw Amn Fuwzr On Circuit Grov: um Cunneclnrs 4’ LED DC Pawn Jutk skywm usa [a um" usa Conngdar USBm Serial UARTIC 3 W Ardu a use! Skywire usa Imam Button lnlcrlnct 3
3. Hardware Description
The following is a list of some of the hardware features of the NL-SWDK2:
- 20 Pin Skywire Interface
- Skywire USB and USB to Serial USB interfaces
- Skywire Modem automatic turn on circuitry
- Flexible 5V-15V (12V typical) board power supply input
- Arduino interface
- 2x Grove connectors for Arduino platforms
- 2x PCB Mount u.Fl to SMA 50Ω RF connectors
- 1x tricolor LED
3.1 Block Diagram
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 9
Gooccoooun m. . [fl SKYWIRE“ NwmbeLlnk‘ Parameter Barrel Jack Power Input (J15)
3.2 Modem Placement
⚠ Make sure the Skywire is installed in the correct orientation in your host
board. Failure to do so will damage the device and void the warranty.
To seat the modem, align the Skywire modem's u.Fl connectors with the two circles
seen on the top of the SWDK2's Skywire socket. When viewing the mPCIe adapter
from the top, the modem's u.Fl connectors should be in the middle of the development
kit when mounted. An example photo of the placement is below.
3.3 Power
The SWDK2 development kit may be powered through the 2.1mm barrel jack, J15, or
through the VIN pin on the Arduino interface. The power supply connected to the
development kit should be able to provide at least 8 watts of power to the SWDK2 plus
any additional power required for a connected arduino board or any sensors.
The J11 barrel jack will provide power to the Arduino VIN pin on J11-1 for powering
host processor boards.
When the board is powered the green D4 LED will be on.
The acceptable input power range for the development kit is shown in the table below.
*The acceptable Arduino header VIN voltage input range will depend on the development kit being used. Consult the Arduino
style host boards datasheet to determine the appropriate input voltage for the host processing board.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 10
Parameter
Pin(s)
Min. Rating
Max. Raing
Barrel Jack Power Input (J15)
J15-1
5.0V
15V
Arduino VIN Power Input (J11-1)*
J11-1
5.0V
15V
oooanr‘qnnu‘ N .‘g SKVWI RE’ NmbsLInk' ‘ n FTDI's website.
3.4 USB Communication
The SWDK2 offers a USB 2.0 interface to the Skywire modem on connector J5, which
is highlighted below. This interface utilizes a USB-Mini connector. USB drivers for the
Skywire modem are available for download on the specific modem's product page.
3.5 UART Communication
The SWDK2 provides a USB to serial UART interface to interface with the Skywire
modem's serial UART. This is accessible through connector J14, which is highlighted
below. This interface utilizes a USB-Mini connector.
The USB to serial UART IC is an FTDI FT234XD. The FTDI drivers for the FT234XD
are available on FTDI's website.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 11
Interface Selection Test Points (TP16-TP19) SW1-1 Position OW SW1-2 Position ON r"PKFIDI VRPDZ nfiuio-ON 130 r“ 1
3.6 UART Selection
The Skywire modem's UART interface is multiplexed to several different interfaces on
the development kit to allow for easy interfacing with different host development kits
and for accessing it through the USB to serial UART interface (J14). The UART
selection multiplexer allows for the UART to be routed to one of the following
interfaces:
- USB to Serial interface on J14
- Arduino Interface 1 on Arduino pins D0/D1
- Arduino Interface 2 on Arduino pins D2/D8
The USB to serial interface will be automatically selected when a USB connection is
powered on J14 and will override the selection switch for the Arduino interfaces. This
feature could be bypassed if desired by modifying the circuit board.
The interface selection for the Arduino interfaces is controlled by the switches on SW1
according to the following logic table:.
Below is an image of the switch locations on SW1.
3.7 ON_OFF Control
3.7.1 Power On
The development kit can automatically boot the modem when power is applied by
turning SW1-3 to the on position. The development kit has a built in automatic turn on
circuit using a TI TPL5111DDCR (U1) that will toggle the modem's ON_OFF pin low
one time for about 8 seconds after the 4.0V supply is applied. The automatic turn on
circuit can be enabled or disable based using the SW1-3 DIP switch.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 12
Interface Selection
SW1-1 Position
SW1-2 Position
Test Points (TP16-TP19)
OFF
OFF
Arduino Interface 1 (D0/D1)
ON
OFF
Arduino Interface 2 (D2/D8)
OFF
ON
USB to Serial Interface
ON
ON
v.1! "Rpm: )RQD2 -.)Hut o-ON 70 LED Color 0 Control Pin Orange D3
3.7.2 Power Off
Prior to removing the development kit's power, the cellular modem must be properly
powered down. Removing power prior to shutting down the modem violates carrier
standards and may damage the modem. Please see the AT command manual of the
modem being used for the proper shutdown command for the modem. Users must
wait for the modem to fully de-enumerate from the host system prior to removing
power.
3.8 SW1 DIP Switch
The SW1 DIP switch on the development kit is used for controlling the UART
multiplexer as described in section 3.6 and for enabling or disabling the auto power on
circuit for the modem as described in section 3.7.1. New development kits will have a
piece of Kapton tape over SW1, this tape may be removed by the user. Each switch
location, SW1-1, SW1-2, and SW1-3, are marked on the DIP switch as 1, 2, and 3,
respectively. There is also silkscreen marking for the ON position and for the
functionality of each switch.
3.9 User Button
The development kit has one momentary switch user button that is connected to the
Arduino interface A1.
3.10 User LED
The development kit has one tricolor green-blue-orange LED that is connected to the
Arduino interface. Each LED channel is controlled by an N-Channel Mosfet and the
connection pinout is shown in the table below.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 13
LED Color
Arduino Control Pin
Orange
D3
Blue
D12
Green
D13
3.11 Grove Connectors
The development kit has footprints for up to four grove connectors, however only the
connectors on the back side of the board, J8/J9, are populated. J6/J7 are not
populated and may have some mechanical clearance issues with some Skywire
modems. The pinout for the grove connectors is available in section 2.2.3.
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 14
Notes Date -|nitia| Release 2020/11/11
4. Version Information
PN 1002633 REV 1 © NimbeLink Corp. 2020. All rights reserved. 15
Revision
Notes
Date
1
-Initial Release
2020/11/11