Specifications

WA_DEV_FEX20_PTS_004 Rev 001 June 30, 2010 32
Expansion Card Product Technical
Specification
Signals and Indicators
Table 22: Reset Signal Pin Description
Pin Number
Signal
I/O
I/O Type
Description
13
~RESET
I/O
Open Drain
1V8
Fastrack Xtend Reset
Refer to section 4.2 Electrical Information for Digital I/O for open drain, 2V8 and 1V8 voltage
characteristics and reset state definitions.
5.1.3. Electrical Characteristics
Refer to the following table for the electrical characteristics of the reset signal.
Table 23: Electrical Characteristics of the Reset Signal
Parameter
Minimum
Typical
Maximum
Unit
Input Impedance (R)*
330K

Input Impedance (C)
10n
F
~RESET time (Rt)
1
200
µs
~RESET time (Rt)
2
at power up only
20
40
100
ms
Cancellation time (Ct)
34
ms
V
H
0.57
V
V
IL
0
0.57
V
V
IH
1.33
V
* Internal pull-up
* V
H
: Hysterisis Voltage
1 This reset time is the minimum to be carried out on the ~RESET signal when the power supply is already
stabilized.
2 This reset time is internally carried out by the Fastrack Xtend power supply supervisor only when the power
supplies are powered ON.
5.2. BOOT Signal
A specific BOOT control pin is for downloading firmware to the Fastrack Xtend.
A specific PC software program, provided by Sierra Wireless, is needed to perform this specific
download.
The BOOT pin must be connected to VCC_1V8 for this specific download.
Table 24: BOOT Settings
BOOT
Operating Mode
Comment
Leave open
Normal use
No download
Leave open
Download XMODEM
AT command for Download AT+WDWL*
1
Download specific
Need Sierra Wireless PC software
* Refer to document [10] 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 about this command.