Telegesis ZigBee ETRX3USB User manual

Telegesis
TG-ETRX357USB-PM-014-102
ETRX3USB
Product Manual 1.02
©2013 Telegesis (UK) Ltd ETRX3USB Product Manual (Rev 1.02)
ZigBee®USB STICKS:
ETRX3USB
ETRX3USB-LRS
ETRX3USB+8M
ETRX3USB-LRS+8M
PRODUCT MANUAL

ETRX3USB
©2013 Telegesis (UK) Ltd - 2 - ETRX3USB Product Manual (Rev 1.02)
Table of Contents
1INTRODUCTION.................................................................................................................3
1.1 Supported Operating Systems .........................................................................................3
2ABSOLUTE MAXIMUM RATINGS .....................................................................................4
38MB FLASH MEMORY.......................................................................................................4
3.1 Connections.....................................................................................................................4
3.2 Firmware..........................................................................................................................4
4OPERATING CONDITIONS................................................................................................5
5REGULATORY INFORMATION.........................................................................................6
5.1 FCC compliance Class B Digital Device...........................................................................6
5.2 Canada –Industry Canada (IC)........................................................................................6
5.3 European Certification......................................................................................................6
5.4 General............................................................................................................................7
6ETRX357 I/O CONNECTIVITY............................................................................................7
7FIRMWARE UPGRADES ...................................................................................................7
8DRIVER INSTALLATION AND OPERATION.....................................................................8
8.1 Windows XP/Vista/7 Driver Installation.............................................................................8
8.2 Macintosh and Linux drivers...........................................................................................10
9CUSTOM FIRMWARE DEVELOPMENT ..........................................................................10
10 ORDERING INFORMATION.............................................................................................12
11 TRADEMARKS.................................................................................................................13
12 DISCLAIMER....................................................................................................................13
13 CONTACT INFORMATION...............................................................................................13
14 REFERENCES..................................................................................................................13

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1 Introduction
The ETRX3USB ZigBee USB Stick is effectively an RS232 to USB bridge connected to an ETRX3
Series ZigBee module. This allows connectivity to a computer’s USB port.
The ETRX3USB+8M and ETRX3USB-LRS+8M include an 8Mbit flash memory chip which can be
accessed by the firmware in the EM357 ZigBee chip inside the USB stick.
The ETRX3USB-LRS and ETRX3USB-LRS+8M have an ETRX357-LRS module in place of the
ETRX357 for longer range. The LRS variant has higher output power and better receiver
sensitivity; consult the ETRX357 and ETRX357-LRS Product Manuals for the full details.
The supplied Windows drivers create a virtual COM Port, so that the command line of the ETRX3
series module can be accessed via any terminal software application.
When using Windows®the Telegesis Terminal application can be used as described in the
ETRX357 Development Kit manual.
1.1 Supported Operating Systems
Windows 98SE
Windows XP/Vista/7
Windows 2000
Windows CE *
MAC OS-9
MAC OS-X *
Linux *
* drivers for these systems are available from Silicon Labs. The bridge chip is a CP2102 with
Vendor ID 0x10C4 and Product ID 0x8293.

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2 Absolute Maximum Ratings
Parameter
Min.
Max.
Units
Condition
Supply Voltage Vdd
-0.3
5.5
V
Voltage on any pin
-0.3
Vdd+0.3, max 5.8
V
Storage Temperature range
-40
150
°C
Table 1: Absolute Maximum Ratings
The absolute maximum ratings given above should under no circumstances be violated.
Exceeding one or more of the limiting values may cause permanent damage to the device.
3 8Mb flash memory
3.1 Connections
The +8M devices in the USB stick family contain a Winbond W25Q80B 8Mb serial flash memory
chip with SPI interface to the EM357. The pin connections to the EM357 are shown in Figure 1.
Figure 1. Flash memory connections to EM357
At the time of writing the datasheets for the family of Winbond W25Q80Bx flash memory chips is
available at:
www.winbond.com/hq/enu/ProductAndSales/ProductLines/FlashMemory/SerialFlash
3.2 Firmware
The Telegesis R3xx firmware does not have any capability of driving the SPI connection to the
memory chip. Users will have to write or commission custom firmware to make use of this external
memory.
/CS
DO
/WP
GND
VCC
/HOLD
CLK
DI
PA0
PA3
PA2
PA1
VCC
VCC
W25Q80B
VCC
GND

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4 Operating Conditions
Typical values at 5V 25°C.
Parameter
Min.
Typ.
Max.
Units
Condition
Supply Voltage, Vdd
4.5
5
5.5
V
Supply Current
ETRX3USB
561
mA
TX 8dBm
542
mA
TX 3dBm
541
mA
TX –43dBm
52.51
mA
RX
29.51,3
mA
SED, Power Mode 01
271,2
mA
SED, Power Mode 02
261,2
mA
SED, Power Mode 03
Operating ambient
temperature range
-20
25
85
°C
Table 2: Operating Conditions
The Winbond memory chip in the 8M variants draws extra current as shown in Table 3. Full details
of its power consumption can be found in the Winbond W25Q80Bx family datasheets.
Operation
Current
Units
Typ
Max
Standby
25
50
µA
Read 1MHz
4
6
mA
Write Status Register
8
12
mA
Page Program
20
25
mA
Sector/Block Erase
20
25
mA
Chip Erase
20
25
mA
Table 3: Flash memory current consumption
1
During USB suspend the current will drop by 25.6mA in all modes.
2
During USB suspend the current will drop by 25.6mA in all modes.
3
Please note that the power consumption in various power modes is firmware and usage dependent.

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5 Regulatory Information
The ETRX3USB and ETRX3USB+8M as well as the ETRX3USB-LRS and ETRX3USB-LRS+8M
have been designed to meet all national regulations for world-wide use. In particular the following
certifications have been obtained:
5.1 FCC compliance Class B Digital Device
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause
undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user's authority to
operate the equipment under FCC rules. An FCC declaration of conformity is available separately
from the Telegesis website
The ETRX3USB and ETRX3USB+8M contain a modular radio transmitter with FCC ID
S4GEM35XA. The ETRX3USB-LRS and ETRX3USB-LRS+8M contain a modular radio transmitter
with FCC ID S4GEM35XB.
5.2 Canada –Industry Canada (IC)
This Class B digital device complies with Canadian ICES-003. Cet appareil numérique de la
classe B est conforme à la norme NMB-003 du Canada.
5.3 European Certification
The ETRX3USB and ETRX3USB+8M as well as the ETRX3USB+LRS and ETRX3USB-LRS+8M
limited to a maximum power level of 21.15mW e.i.r.p. (13.2dBm) have been tested and comply
with the following standards:

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Radio: EN 300 328 v1.7.1 (10/2006)
EMC: EN 301 489-17 v2.1.1 (09/2008)
Safety: EN 60950-1:2006
An EC declaration of conformity is available separately from the Telegesis website.
Important Note: In Europe the regulations for the 2.4GHz frequency band only permit.a maximum
power spectral density of 10mW/MHz, which with a ZigBee spectrum equates to an e.i.r.p of
13dBm. The ETRX3USB cannot reach this level but the ETRX3USB-LRS can exceed it, so in the
latter device the power out of the EM357 chip into the RF power amplifier should be limited to -
11dBm. Refer to the ETRX357-LRS Product Manual for more details.
5.4 General
For further technical information, including radio certification, see the corresponding ETRX3 series
Module Product Manuals.
When ordering ETRX3USB sticks without printed branding on the case, you may be responsible
for applying a marking appropriate to their geographical area of use, such as the CE marking.
For more information on ZigBee compliance and the AT command interface firmware please refer
to the latest AT command dictionary and the ETRX357 user guide.
6 ETRX357 I/O Connectivity
The I/Os of the built-in ETRX357 are connected as follows:
PA6 is connected to the LED (drive PA6 low to sink LED current).
PB3 is the CTS input for the ETRX357. Make sure PB3 is never defined as an output.
PB4 is the RTS input for the ETRX357.
Important Note: The lines for hardware handshaking are connected, so even when not using
hardware handshaking PB3 should never be defined as an output as this would drive against the
incoming CTS signal via a 1kΩresistor and increase the current consumption.
7 Firmware upgrades
The firmware which is loaded onto the embedded ETRX357 Module can be upgraded over the air
or via the virtual COM port as described in the ETRX357 Development Kit Product Manual.
Alternatively, access to the SIF programming interface is possible by opening the cover on the side
of the ETRX3USB ZigBee USB stick.

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8 Driver Installation and Operation
The drivers provided will generate a virtual COM port allowing easy access to the serial port of the
embedded ETRX357.
To read more about the ETRX357 wireless mesh networking module and its command line
interface please read the corresponding documentation which can be found at
www.telegesis.com/support/document_centre.htm.
8.1 Windows XP/Vista/7 Driver Installation
The driver package downloadable from the Support  Software download page at
www.telegesis.com/telegesis_zigbee_technology_-_technical_support_/software_download.htm
should be unzipped into a local folder. When executing the file ‘TgVCPInstaller.exe’ prior to
plugging in the ETRX3USB stick an installer will guide you through the steps required for the driver
installation.
Figure 2: Found New Hardware Wizard
After insertion of the stick, Windows®may prompt that new hardware has been found. If you have
run the ‘TgVCPInstaller.exe’ Windows will be able to install the driver by automatically, but if you
have not run ‘TgVCPInstaller.exe’ you will have to manually point to the directory into which you
have unzipped the driver.
Please note that each ETRX3USB has a unique serial number which requires the installation
procedure to be repeated with every new ETRX3USB being attached to the computer, though the
process is not obtrusive. This allows multiple ETRX3USB sticks to be used on the same computer
at any one time.
In order to find out the identity/number of the virtual COM port the stick has been assigned to,
please open the Device Manager under the Windows Computer Management screen (see below)
and click on the Ports (COM and LPT) section where you should find the new virtual COM port. By

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double clicking on the entry of the virtual COM port you can also change the number assigned to
the virtual COM port when entering the advanced setup of the device.
Figure 3. Device Manager
Once the correct COM port has been selected, the Terminal software can be used to control the
ETRX3USB stick as per the Development Kit Manual. Telegesis Terminal is a free download from
www.telegesis.com/telegesis_zigbee_technology_-_technical_support_/software_download.htm

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Figure 4. Telegesis Terminal
8.2 Macintosh and Linux drivers
A Virtual Com Port driver kit for Mac and Linux can be obtained by following the link on our website
on the Support  Software download page. Recent versions of the Linux kernel have native
support for Telegesis USB devices.
The Silicon Laboratories CP2102 serial-to-USB bridge chip is configured with Vendor ID 0x10C4
and Product ID 0x8293, and the drivers must be written to recognise these identifiers.
9 Custom Firmware Development
If you intend to develop custom firmware to go onto the ETRX3USB you need to contact Silicon
Labs to obtain access to their suite of development tools and their stack. The USB stick contains
an ETRX357 module based on the Silicon Labs EM357 and a USB-to-serial bridge chip. The
ETRX357 communicates via its serial port, so the user’s firmware must use the UART of Serial
Controller 1. The nRTS and nCTS lines are connected to the USB bridge chip. The LED on the
USB stick is driven from EM357 pad PA6.
In order to download custom firmware onto the ETRX357, the Silicon Labs bootloader can be used
or alternatively the ETRX3USB can be directly connected to the Silicon Labs InSight Adapter for
programming and real time debugging.