WA_DEV_FEX20_UGD_002
Rev 002
April 26, 2010
47
Fastrack Xtend User Guide
Interfaces
Parameter
I/O
Min
Typ
Max
Unit
VBUS Input current consumption*
100
mA
*
Fastrack Xtend without battery accessory
The USB feature can be activated by using the
AT+WMFM=0,1,3
AT command. Refer to document
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 this AT
command.
5.2. Back Interface
Figure 15.
Fastrack Xtend Back Interface
5.2.1.
SIM Interface
A SIM card can be directly connected to the Fastrack Xtend through the embedded SIM socket. This
interface controls 3V / 1V8 SIM cards and it is fully compliant with GSM 11.11 recommendations
concerning SIM functions.
The SIM interface of the Fastrack Xtend is ESD protected. Transient overvoltage protections in ESD
are internally added on the signals connected to the SIM interface in order to prevent any damage
from electrostatic discharge.
The SIM interface uses 5 SIM signals, namely:
SIM-VCC: SIM Power supply
~SIM-RST: Reset
SIM-CLK: Clock
SIM-IO: I/O Port
SIMPRES: SIM card detection
SIM Interface
Main RF Interface
Secondary RF Interface
LED Status Indicator
Expansion Card Compartment
