NXP Semiconductors JN5148 User manual

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
JN-RM-2064
Revision 1.0
25-Jul-2012

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
2 © NXP Laboratories UK 2012 JN-RM-2064 v1.0
Contents
About this Manual 3
Organisation 3
Conventions 3
Acronyms and Abbreviations 3
Related Documents 3
1 Introduction 4
1.1 Features 4
1.2 Reference Design 4
2 Hardware Overview 5
2.1 Dongle Layout 5
2.2 LPC1343 Device 5
2.3 JN5148 Device 5
2.4 High-Power Front-End 6
2.5 LNA Bypass 6
2.6 LEDs 6
3 Programming the LPC1343 Device 7
4 Programming the JN5148 Device 8
4.1 Re-programming USB Dongles 8
4.2 Preparing the Binary File 8
4.3 Programming the Dongle 8
4.4 Installing Device Driver for USB Dongle 9

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
JN-RM-2064 v1.0 © NXP Laboratories UK 2012 3
About this Manual
This manual provides a detailed reference for NXP’s JN5148 High-Power USB
Dongle (DR1131). The manual is part of the reference design JN-RD-6034.
Organisation
This manual consists of 4 chapters, as follows:
Chapter 1 outlines the features and functions of the USB dongle
Chapter 2 provides detailed feature information
Chapter 3 describes programming the LPC1343 device on the dongle
Chapter 4 describes programming the JN5148 device on the dongle
Conventions
Files, folders, functions and parameter types are represented in bold type.
Function parameters are represented in italics type.
Code fragments are represented in the Courier typeface.
Acronyms and Abbreviations
BOM Bill Of Materials
DIO Digital Input/Output
LNA Low-Noise Amplifier
PCB Printed Circuit Board
SDK Software Developer’s Kit
UART Universal Asynchronous Receiver/Transmitter
USB Universal Serial Bus
Related Documents
JN-DS-JN5148 JN5148 Data Sheet

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
4 © NXP Laboratories UK 2012 JN-RM-2064 v1.0
1 Introduction
This manual provides a detailed reference for the JN5148 High-Power USB
Dongle, of type DR1131, supplied with JenNet-IP EK040 evaluation kit. The
dongle provides a platform for hardware development environment for wireless
microcontroller applications with a USB interface.
1.1 Features
The dongle has the following features:
JN5148-J01 device (mounted directly on the board)
Integrated PCB antenna
High-power capability
NXP LPC1343 USB interface and connector (interface chip is connected to
UART0 of the JN5148-J01 device)
Two LEDs (one red and one green)
This dongle is a high-power device with a radio transmission capability similar to
the high-power modules provided in the JenNet-IP EK040 evaluation kit.
1.2 Reference Design
A reference design (JN-RD-6034) for the JN5148 High-Power USB Dongle is
available from www.nxp.com/jennic/support. The reference design comprises a
ZIP file containing the following files:
This Reference Manual
The schematic diagram for the board
The BOM (Bill Of Materials) for the board
Gerbers for the board

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
JN-RM-2064 v1.0 © NXP Laboratories UK 2012 5
2 Hardware Overview
2.1 Dongle Layout
19mm
45mm
USB
JN5148
LEDS HP Front End
LPC1343 Antenna
SPI Flash
LPC1343 Config
Connector
Figure 1: DR1131 Board Layout
2.2 Dongle Block Diagram
Timers
UART
12-bit ADC,
comparators
12-bit DACs,
temp sensor
SPI
RAM
128kB
128-bit AES
Encryption
Accelerator
2.4GHz
Radio
ROM
128kB
RISC CPU
Power
Management
XTAL
32.768 kHz
O-QPSK
Modem
IEEE802.15.4
MAC
Accelerator
512kB
Serial Flash
Memory
JN5148 chip
Integrated Antenna
32kHz ext Xtal
Sleep Counters
32-byte
OTP eFuse
Watchdog timer
Time of Flight
Engine
USB
LPC1343
Micro
XTAL
32 MHz
XTAL
12 MHz
SE2431L Matching
2.3 LPC1343 Device
The LPC1343 device is connected to the USB connector and acts as an
interface between the PC and the JN5148 device. The LPC1343 will enumerate
on the PC as two devices:
1. A mass storage device used to program the Flash device for the JN5148
2. A virtual COM port connected directly to UART0 on the JN5148
2.4 JN5148 Device
The JN5148 circuit is based around the standard JN5148 reference design.

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
6 © NXP Laboratories UK 2012 JN-RM-2064 v1.0
2.5 High-Power Front-End
The front-end is a Skyworks SE2431L. This means that the dongle can achieve
22dBm output power and Rx sensitivity of -100dBm. The output of the front-end
is connected to a printed antenna.
2.6 LNA Bypass
If the dongle is used in the presence of very strong signals, such as Wi-Fi, then
there will be a performance improvement by switching off the Low-Noise
Amplifier (LNA) in the front-end to stop the input stage of the JN5148 device from
being overloaded with other signals. The LNA can be bypassed using DIO1 -
driving DIO1 low will bypass the LNA.
2.7 LEDs
The two LEDs are connected back-to-back between DIOs 16 and 17.

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
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3 Programming the LPC1343 Device
The LPC1343 device is supplied pre-programmed on all USB dongles. You
should never need to reprogram the firmware in the LPC1343 device when
developing applications for the JN5148 device.
If you are producing new USB dongles or are developing new ways to
communicate with the JN5148 device (i.e. new HID classes) then the mechanism
for reprogramming the LPC1343 is as follows.
1. Insert the USB dongle into the PC with pins 2 and 6 of J4 connected
together.
2. Wait up to 30 seconds. The dongle will now appear in Windows Explorer
as a mass storage device with the title ‘CRP DISABLD’:
3. Rename your new binary FIRMWARE.BIN.
4. ‘Drag and drop’ or ‘copy and paste’ the new binary file onto the USB
dongle.
5. Remove the USB dongle from the PC and re-insert it, this time with J4 pins
2 and 6 not connected together.
Two pre-compiled binaries are available in the JN-RD-6034 reference design.
These are:
LPC1343_Firmware_0x10.bin: This binary should be used for devices
that store their MAC address at address 0x10, such as the JN5148-J01
and JN5142-J01.
LPC1343_Firmware_0x30.bin: This binary should be used for devices
that store their MAC address at address 0x30, such as the JN5148-001.

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
8 © NXP Laboratories UK 2012 JN-RM-2064 v1.0
4 Programming the JN5148 Device
4.1 Re-programming USB Dongles
You can easily re-programme a dongle with another binary file through a USB
port of your PC and the LPC1343 device on the dongle. The replacement binary
file must be a specially prepared file called FIRMWARE.BIN. When this file is
copied onto the mass storage device, the LPC1343 device holds the JN5148
device in reset and then programs the SPI Flash device directly, releasing the
reset once programming is complete. The LPC1343 device will also check the
MAC address in the SPI Flash device and preserve it though re-programming
operations if a new MAC address has not been specified in the new
FIRMWARE.BIN file.
4.2 Preparing the Binary File
Before a custom application binary file can be programmed into the USB dongle,
a utility called jn514x_firmware.exe must be run on the file to strip out a 4-byte
header. This utility is provided in the JenNet-IP SDK (JN-SW-4051) and is
located as follows:
C:/Jennic/Tools/NXP_USBDongle/jn514x_firmware.exe
The utility can be run from a bash shell using the following command:
/cygdrive/c/Jennic/Tools/NXP_USBDongle/jn514x_firmware.exe
with the following options:
-f is used to specify the name of the input file
-m is used to specify the IEEE/MAC address of the target device (: separated)
-c is used to specify the target chip type (in this case, should be JN5148J01)
Therefore, the required usage is:
.../jn514x_firmware.exe -f <app path/name> -m <MacAddress>
-c JN5148J01
4.3 Programming the Dongle
This re-programming of the dongle uses a simple ‘drag and drop’ method within
Windows Explorer, as follows:
1. Plug the USB dongle into a free USB port of your PC (if an ‘Installing driver’
message is displayed, refer to Section 4.4 below).
2. Open Windows Explorer - the dongle should appear as ‘Jennic_USB’.
3. If the dongle currently contains any files, delete them.
4. Within Windows Explorer, navigate to the new FIRMWARE.BIN file on your
PC, then ‘drag and drop’ or ‘copy and paste’ the new binary file onto the
USB dongle.

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
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4.4 Installing Device Driver for USB Dongle
1. The first time you plug the dongle into a USB port of your PC, an ‘Installing
driver’ message appears in the bottom-right corner of the screen. The
system will install most of the software required, but will leave the following
box:
2. Close the box and go to Start > Control Panel > System > Device
Manager. In the Device Manager, you will notice that the VCOM port is
accompanied by an exclamation mark:
3. Right-click on the VCOM port and from the context menu select 'Update
driver software..' and then select the manual installation method (bottom
option).
4. Use the Update Driver Software browser to navigate down to the folder
C:\Jennic\Tools\NXP_USBDongle\Drivers and then click Next.
The system will now install the software driver.

JN5148 High-Power USB Dongle (DR1131)
Reference Manual
10 © NXP Laboratories UK 2012 JN-RM-2064 v1.0
5. You can check that the device driver has installed correctly as if it has, the
device NXP LPC1343 will appear in the Ports (COM & LPT) section and
will appear as a USB mass storage device in the USB Controllers section.
Your dongle is now ready to use.