ETRX2 Telegesis Ltd, ETRX2 Datasheet - Page 12

• Manufacturer Part Number: ETRX2
• Description: MODULE ZIGBEE EM250 CHIP ANT
• Manufacturer: Telegesis Ltd

Specifications of ETRX2

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: ISM
• Power - Output: 3dBm
• Sensitivity: -98dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 35.5mA
• Current - Transmitting: 35.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 5kB SRAM
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Module Applications: AMR, Building Automation, Wireless Sensor Network, M2M Industrial Controls
• Mcu Supported Families: EM250
• Processor Type: EM250
• Wireless Protocol: IEEE 802.15.4
• Data Rate: 250Kbps
• Module Interface: I2C, SPI, UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 920-1000-2

5 Firmware changes and upgrades
The firmware which is loaded onto the integrated ETRX2 Module can be upgraded over the air or
via Ethernet using a virtual COM port as described in the Development Kit Manual. The procedure
for bootloading is described in section 12 of the Telegesis Development Kit Product Manual
(available from our website). If you want to bootload new firmware via the COM port, you must
take care to follow this procedure, because the Telegesis firmware and the Ember bootloader run
at different baud rates:
Alternatively access to the SIF programming interface is possible by removing the cover of the
EAP-E access point. You can also use this interface for custom firmware development and real
time debugging of your custom firmware.
Finally with the advent of EmberZNet3.x it is now possible to download the Ember EZSP (Ember
ZigBee® Serial Protocol) as described in section 6 of the EM260 manual to the EAP-E. In case
you
[e-mail].
5.1 Device Reset and manually Entering the Bootloader
In case the embedded ETRX2 needs to be reset manually the reset pin of the ETRX2 is connected
to the CP1 pin of the Lantronix® XPort® Direct
connected to the CP2 pin. This allows hardware triggering of the Ember standalone bootloader,
which can be used for firmware upgrades.
To learn how to access the CP1 and CP2 Pin of the Lantronix® XPort® Direct
refer to the Lantronix® XPort® Direct
©2009 Telegesis (UK) Ltd
1. Start Lantronix DeviceInstaller, CPR Manager and Telegesis Terminal
2. Set up a normal serial COM port connection from Telegesis Terminal to the EAP
3. Execute AT+BLOAD
4. Disconnect Telegesis Terminal
5. Use DeviceInstaller to change Lantronix Ethernet module to 115200 baud, as described in
6. Connect Telegesis Terminal but stay at 19200 baud
7. Hit <cr> and get the usual bootloader prompts
8. Download new firmware at 19200
9. Disconnect Telegesis Terminal
10. Use DeviceInstaller to change Lantronix module back to 19200 baud
11. Connect Telegesis Terminal
12. Resume normal operation with new firmware
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