User guide

WA_DEV_FEX20_UGD_002 Rev 004 March 08, 2011 38
Fastrack Xtend User Guide
Interfaces
Refer to document [7] Firmware 7.4a AT Commands Manual (Sierra Wireless Software Suite
2.31)/Firmware 7.4 AT Commands Manual (Sierra Wireless Software Suite 2.30) for more information
regarding AT commands.
Note: The AT+WIOM command is not required for FXT004. The AT+WIOW and AT+WIOR commands
will automatically set the GPIO to the desired mode. For example, AT+WIOW=42,1 will set GPIO42
to output mode and in High state.
Caution: Some AT commands and features in this section are not available in FXT004. Refer to section 2
Features and Services and document [10] AirPrime Q26 Elite Software User Guide and AT
Commands Interface Specification for more information on which AT commands and features are
available in FXT004.
5.1.1.2. ON/OFF Pin
The Fastrack Xtend has an external ON/OFF pin which is used to turn the device ON or OFF. The
following table describes the operation of this pin.
Table 12. ON/OFF Pin Operation
Condition
State
Power Supply
Operation
1
Open
When 4.75V to 32V supply is
applied.
The Fastrack Xtend is turned ON.
2
Pulled to GND
When 4.75V to 32V supply is
applied.
The Fastrack Xtend remains OFF.
3
Left open when turning
ON the Fastrack
Xtend, then pulled to
GND
4.75V to 32V supply is initially
applied.
The Fastrack Xtend remains ON and
will remain ON until AT+CPOF is sent
to turn the device OFF.
To enable the low power mode, the user may simply pull the ON/OFF pin to GND and send
AT+CPOF to the Fastrack Xtend using a communication software such as a HyperTerminal.
Note: The AT+CPOF command is not supported in FXT004. The AT+CFUN=0 command is used instead.
Table 13. ON/OFF Pin Description
Pin #
Signal
I/O
I/O Voltage
Description
8
ON/OFF
I
4V
Pin to turn the Fastrack Xtend ON/OFF.
Refer to the power consumption tables in section 12 Power Consumption for the power consumption
values when the Fastrack Xtend is in Alarm mode (Low Power mode).