User guide

WA_DEV_FEX20_UGD_002 Rev 004 March 08, 2011 48
Fastrack Xtend User Guide
Interfaces
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
5.2.1.1. SIM Socket Pin Description
Refer to the following table for the pin description of the SIM socket.
Table 24. SIM Socket Pin Description
Pin #
Signal
I/O
I/O Type
Reset State
Description
1
SIMVCC
O
2V9 / 1V8
SIM Power Supply
2
SIMRST
O
2V9 / 1V8
O
SIM RESET
3
SIMCLK
O
2V9 / 1V8
O
SIM Clock
7
SIMDATA
I/O
2V9 / 1V8
Pull up*
SIM DATA
8
SIMPRES
I
1V8
Pull low**
SIM Card Detect
* SIM-IO pull up is about 10KΩ.
** SIMPRES pull low is about 100KΩ.
5.2.2. Main RF Interface
The Fastrack Xtend‟s main antenna connector allows the transmission of radio frequency (RF) signals
from the device to an external customer supplied antenna. This interface is an SMA type connector
and its nominal impedance is 50.
Figure 23. Main RF Connector for the FXT001, FXT002, FXT009 and FXT010
Refer to the following table for the transmission and reception frequency range based on band.
Table 25. Tx and Rx Frequency Range
GSM 850
E-GSM 900
DCS 1800
PCS 1900
Transmission Frequency
Range
824 to 849 MHz
880 to 915 MHz
1710 to 1785 MHz
1850 to 1910 MHz
Reception Frequency Range
869 to 894 MHz
925 to 960 MHz
1805 to 1880 MHz
1930 to 1990 MHz
Refer to section 14.4 Component Recommendations for the list of recommended antenna connectors.