User's Manual

Table Of Contents
Telegesis (UK) Limited
TG-ETRX1-PM-01-106 4
ETRX1
Preliminary Product Manual 1.06
2. ETRX1 Function Summary
Module Features
Small form factor, SMT module 37.75mm x 20.45mm x
3.4mm
Optional board to board or board to cable plug-in connector
Integrated antenna or alternative Hirose U.FL antenna
connector
UART interface for easy communication
IEEE 802.15.4 compliant
Can act as FFD, RFD and Coordinator
Hosts the Atmel Atmega 128L and the Ember EM2420
128k flash, 4kbytes EEPROM and 4kbytes of RAM
Up to 8 MIPS processing power
Module comes with standard Telegesis AT style software
interface.
A
lso available without Telegesis AT style interface or with
customer specific firmware
8 general purpose I/O lines and 2 analogue inputs
In System programmable
Optional JTAG Support
Supports 5 different power down modes
Based on the proven EmberNet classic Stack
Full ZigBee™ compliance will be available with the upcoming
EmberZNet stack
Firmware upgrades via RS232 or over the air (password
protected)
Hardware supported encryption (AES-128)
Supply voltage 2.7V – 3.6V
Current Consumption as low as 15uA in sleep mode
Tested for CE and FCC compliance (with integrated
antenna)
Operating temperature range -20
0
C to +65
0
C
Suggested Applications
AMR – Automatic Meter Reading
Wireless Alarm and Security
Home/Building Automation
Wireless sensor Networks
Industrial Control
ZigBee™ systems
PC Peripherals
IEEE 802.15.4 systems
The Telegesis ETRX1 has been designed to be built into any device and
provide a low cost, low power, ZigBee™ ready meshing solution, using the
proven EmberNet technology. No RF experience or expertise is required
to add this powerful wireless networking capability to your products. The
ETRX1 offers fast integration opportunities and the shortest possible time
to market for your product. The AT style command line interface allows
the adopter to quickly integrate meshing radio technology into any product
without the need for complex programming or RF design work.
Example AT-Style Commands
AT+SN Search network & discover
devices
AT+BCAST Sends a Broadcast
AT+UCAST:<address> Sends a Unicast
AT+ASS:<address> Associate Node
At Power-up the last configuration is loaded from EEPROM.
This can eliminate the need for an additional Host
Controller.
Radio Features
Based on the Ember EM2420, 2.4GHz
ISM Band.
Direct Sequence Spread Spectrum RF
transceiver (DSSS)
250kbit/s effective data rate
Very Low Power ( – 30mA in Rx)
16 channels (802.15.4 Channel 11 to 26)
Up to –1dBm output power
Development Support
A
Development Kit is available with a
development board with RS232 connectivity
and I/O break-outs
For high volume customers the AT style
software interface command dictionary can be
extended
Custom software development can be provided
on request
©2005 Telegesis (UK) Ltd ETRX1 Product Manual (Rev 1.06)