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The Telegesis ETRX358x and ETRX358xHR series modules
are small outline, low power 2.4GHz ZigBee modules, based on
the latest Silicon Labs EM358x family of single chip ZigBee®
solutions.
These 4th generation modules have been designed to be
integrated into any device without the need for RF experience
and expertise. Utilizing the market’s premier EmberZNet
ZigBee® stack, the ETRX358x series enables you to add
powerful wireless networking capability to your products and
quickly bring them to market.
For custom application development the ETRX358x series
integrates with ease into Ember Desktop development
environment.
• Small form factor, SMT module 25mm x 19mm
• Same footprint and pin-out as ETRX357
• Side Castellations for easy soldering and optical
inspection
• Two antenna options: Integrated chip antenna or U.FL
coaxial connector
• Based on 32-bit ARM® Cortex-M3
• Operation at 6, 12 or 24MHz
• Industry standard JTAG Programming and real time
packet tracing via the Ember Debug Port
• Up to 512kB of flash and 64kbytes of RAM
• Lowest Deep Sleep Current of 1µA with retained RAM
and GPIO and multiple sleep modes
• Wide supply voltage range (2.1 to 3.6V)
• Optional 32.768kHz watch crystal can be added
externally
• Can act as an End Device, Router or Coordinator
• 24 general-purpose I/O lines including analogue inputs
(all GPIOs of the EM358x SoC are accessible)
• Firmware upgrades via serial port or over the air using
the Ember standalone bootloader
• Hardware supported encryption (AES-128)
• CE, FCC and IC compliance, FCC modular approval
• Operating temperature range: -40°C to +85°C
• Long range version with a link budget of up to 124dB
available in the same form factor
• ZigBee Smart Energy applications
• Wireless Alarms and Security
• Home/Building Automation
• Wireless Sensor Networks
• M2M Industrial Controls
• Lighting and ventilation control
• Remote monitoring
• Environmental monitoring and control
Development Kit
• ETRX3587 Expansion Pack for ETRX357 Development
Kit
• ETRX357 Development kit containing everything
required to set up a mesh network quickly and evaluate
range and performance of the ETRX357 series and its
long-range version.
• Custom software development available upon request.
• Based on the Silicon Labs EM358x family of single chip
ZigBee® SoCs
• 2.4GHz ISM Band
• 250kbit/s over the air data rate
• 16 channels (IEEE802.15.4 Channel 11 to 26)
• +3dBm output power ( +8dBm in boost mode)
• High sensitivity of -100dBm (-102dBm in boost mode)
This document describes the Telegesis ETRX358x and ETRX358xHR family of ZigBee modules
which have been designed to be easily integrated into another device and to provide a fast, simple
and low cost wireless mesh networking interface.
The Telegesis ETRX3 series modules are based on the Silicon Labs ZigBee compliant platform
consisting of the single chip family of EM358x SoCs combined with the ZigBee PRO compliant
EmberZNet meshing stack. The ETRX358x and ETRX358xHR modules represent an ideal
platform for custom firmware development in conjunction with the Silicon Labs ZigBee
development kits.
No RF experience or expertise is required to add this powerful wireless networking capability to
your products. The ETRX358x and ETRX358xHR series of modules offer fast integration
opportunities and the shortest possible time to market for your product.
1.1 Hardware Description
The main building blocks of the ETRX358x and ETRX358xHR modules are the single chip
EM358x SoC from Silicon Labs, a 24MHz reference crystal and RF front-end circuitry optimized for
best RF performance. The modules are available with on-board antenna or alternatively a U.FL
coaxial connector for attaching external antennae. Modules with the U.FL connector are identified
by the “HR” suffix.
The integrated antenna is an Antenova Rufa, and details of the radiation pattern are available from
the Antenova website [5].
The ETRX358x and ETRX358xHR are used for ZigBee (www.zigbee.org) applications. In case it is
desired to develop custom firmware, the Silicon Labs toolchain, consisting of Ember Desktop
together with a comprehensive integrated development environment (IDE), is required.
1
MOQ and Lead Time applies. Only stocked modules are ETRX3587 and ETRX3587HR
The ETRX358x and ETRX358xHR have been designed to meet all national regulations for worldwide use. In particular the following certifications have been obtained:
2.1 FCC Approvals
The Telegesis ETRX358x family integrated Antenna as well as the ETRX358xHR family including
the antennas listed in Table 2 and the power levels listed in section 10.2 have been tested to
comply with FCC CFR Part 15 (USA) The devices meet the requirements for modular transmitter
approval as detailed in the FCC public notice DA00.1407.transmitter.
FCC statement:
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.
While the applicant for a device into which the ETRX358x or ETRX358xHR with an antenna listed
in Table 2 is installed is not required to obtain a new authorization for the module, this does not
preclude the possibility that some other form of authorization or testing may be required for the end
product depending upon local territorial regulations.
The FCC requires the user to be notified that any changes or modifications made to this device
that are not expressly approved by Telegesis (UK) Ltd. may void the user's authority to operate the
equipment.
When using the ETRX358xHR family with approved antennae, it is required to prevent end-users
from replacing them with non-approved ones.
BT-Stubby (rightangle)
EAD Ltd. [6] ¼ Wave
Table 2: Approved Antennae
50Ω
50Ω2.1dBi
0dBi
(peak)
2.1.1 FCC Labelling Requirements
When integrating the ETRX358x or ETRX358xHR families into a product it must be ensured that
the FCC labelling requirements are met. This includes a clearly visible label on the outside of the
finished product specifying the Telegesis FCC identifier (FCC ID: S4GEM358X) as well as the
FCC notice shown on the previous page. This exterior label can use wording such as “Contains Transmitter Module FCC ID: S4GEM358X” or “Contains FCC ID: S4GEM358X” although any
similar wording that expresses the same meaning may be used.
The Telegesis ETRX358x family with integrated Antenna as well as the ETRX358xHR family have
been approved by Industry Canada to operate with the antenna types listed in Table 2 with the
maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for
that type, are strictly prohibited for use with this device.
IC-ID: 8735A-EM358X
• This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference
that may cause undesired operation of the device.
• Under Industry Canada regulations, this radio transmitter may only operate using an
antenna of a type and maximum (or lesser) gain approved for the transmitter by
Industry Canada. To reduce potential radio interference to other users, the antenna
type and its gain should be so chosen that the equivalent isotropically radiated
power (e.i.r.p.) is not more than that permitted for successful communication.
•
and must not be co-located or operating in conjunction with any other antenna or
transmitterThis device has been designed to operate with the power levels shown in
section 10.2 with the antennas listed in Table 2, and having a maximum gain of2.1
dBi. Antennas not included in this list or having a gain greater than2.1dBi are
strictly prohibited for use with this device. The required antenna impedance is 50
ohms.
French Statements
• Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain
de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité
nécessaire à l'établissement d'une communication satisfaisante.
• Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1)
l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout
brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le
fonctionnement.
OEM Responsibilities
The ETRX358x and ETRX358x families of module have been certified for integration into products only
by OEM integrators under the following condition:
1. The transmitter module must not be co-located or operating in conjunction with any other
antenna or transmitter.
As long as the two conditions above are met, further transmitter testing will not be required.
However, the OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed (for example, digital device emissions,
PC peripheral requirements, etc.).
IMPORTANT NOTE: In the event that these conditions can not be met (for certain configurations
or co-location with another transmitter), then Industry Canada certification is no longer considered
valid and the IC Certification Number can not be used on the final product. In these circumstances,
the OEM integrator will be responsible for re-evaluating the end product (including the transmitter)
and obtaining a separate Industry Canada authorization.
2.2.1 IC Labelling Requirements
The ETRX358x and ETRX358xHR family modules are labelled with its own IC Certification Number. If
the IC Certification Number is not visible when the module is installed inside another device, then the
outside of the device into which the module is installed must also display a label referring to the enclosed
module. In that case, the final end product must be labelled in a visible area with the following:
“Contains Transmitter Module IC: 8735A-EM358X“
or
“Contains IC: 8735A-EM358X“
The OEM of the ETRX358x and ETRX358xHR family modules must only use the approved antenna(s)
listed above, which have been certified with this module.
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module or change RF related parameters in the user’s manual of the end
product.
The user’s manual for the end product must include the following information in a
prominent location:
“To comply with Industry Canada RF radiation exposure limits for general population, the
transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.”
2.3 European Certification (ETSI)
The ETRX358x and ETRX358xHR families are compliant to the following standards:
• Radio: EN 300 328:V1.7.1
• EMC: EN 301 489-17:V2.2.1
• Safety: EN 60950-1:2006/A12:2011
If the ETRX358x and ETRX358xHR families of modules are incorporated into an OEM product, the
OEM product manufacturer must ensure compliance of the final product to the European
Harmonised EMC, and low voltage/safety standards. A Declaration of Conformity must be issued
for each of these standards and kept on file as described in Annex II of the R&TTE Directive. The
final product must not exceed the specified power ratings, antenna specifications and installation
requirements as specified in this user manual. If any of these specifications are exceeded in the
final product then a submission must be made to a notified body for compliance testing to all of the
required standards.
The ‘CE’ marking must be applied to a visible location on any OEM product. For more information
please refer to http://ec.europa.eu/enterprise/faq/ce-mark.htm. Customers assume full
responsibility for learning and meeting the required guidelines for each country in their distribution
market.
ETRX358X
2.4 Declarations of Conformity
Telegesis (UK) Ltd will issue Declarations of Conformity for all ETRX3 series ZigBee RF Modules,
which cover RoHS, Radio Emissions, EMC and Safety. These documents will be available from
our website or on request.
2.5 IEEE 802.15.4
IEEE 802.15.4 is a standard for low data-rate, wireless networks (raw bit-rate within a radio packet
of 250kbps @2.4GHz) which focuses on low cost, low duty cycle, long primary battery life
applications as well as mains-powered applications. It is the basis for the open ZigBee Protocol.
The ZigBee Protocol is a set of standards for wireless connectivity for use between any devices
over short to medium distances. The specification was originally ratified in December 2004, paving
the way for companies to start making low-power networks a reality.
ZigBee uses the IEEE 802.15.4 radio specification running on the 2.4GHz band, plus three
additional layers for networking, security and applications. What makes the specification unique is
its use of a mesh network architecture which, in bucket chain style, passes data from one node to
the next until it lands at its destination. The network is self-healing and adapts its routing as link
quality changes or nodes move. Furthermore, nodes can be defined as End Devices which do not
act as routers, but can therefore be put into a low-power sleep state.
The enhanced version of the ZigBee standard (or ZigBee 2006) was released in December 2006,
adding new features and improvements to the only global wireless communication standard
enabling the development of easily deployable low-cost, low-power, monitoring and control
products for homes, commercial buildings and industrial plant monitoring. In 2007 the ZigBee
Alliance introduced the PRO featureset which offers advantages over earlier versions, including
• Truly self-healing mesh networking
• Messages can now travel up to 30 hops
• Source-Routing for improved point to multipoint message transmission
• Improved security including Trust-Centre link keys
The table below gives details about the pin assignment for direct SMD soldering of the ETRX3
series modules to the application board. For more information on the alternate functions please
refer to [2].
All GND pads are connected within the module, but for best RF performance all of them should be
grounded externally ideally to a ground plane.
“Important Note: If designers would like to keep open the option of using either standard or long
range modules in the same product please note the following. The ETRX358x series and the
ETRX358x-LRS series of modules are footprint compatible, but on the ETRX358x-LRS series pins
PB0 and PC5 of the EM358x are used internally to control the front-end module and are not
available to the user.”
{1} When the alternate function is selected, TX_ACTIVE becomes an output that indicates that the
EM358x radio circuit is in transmit mode. PC5 is not usable on the long range version of the
ETRX358x as this GPIO is used internally as TX_ACTIVE to control the external RF frontend.
{2} The serial UART connections TXD, RXD, CTS and RTS are PB1, PB2, PB3 and PB4 respectively
{3} If PA5 is driven low at power-up or reset the module will boot up in the bootloader
{4} PA6, PA7, PB6, PB7 and PC0 can drive high current (see section 8)
{5} nRESET is level-sensitive, not edge-sensitive. The module is held in the reset state while nRESET
is low.
{6} ETRX3588, ETRX3586, ETRX3582 and ETRX3588HR, ETRX3586HR, ETRX3582HR variants only
See also the table “Module pads and functions” in the ETRX357 Development Kit Product
Manual. Refer to the Silicon Labs EM358x manual for details of the alternate functions and pin
names.