Telit GE864 and GC864
Product Description
80273ST10008A Rev. 3 - 10/02/06
Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved
page 40 of 72
3.1 Evaluation Kit description
For a detailed description of the
Telit Evaluation Kit
refer to the documentation provided with the Telit
GE864 / GC864
Hardware User Guide.
3.1.1 Power Supply
In the Board there are three different power sources, that embrace a wide range of applications,
from the auto12V input to the stand alone battery powered device.
The power sources nominal input voltages are:
•
+12V input (typically automotive)
•
+5V input (typically embedded systems)
•
+3.8V input (Li-Ion Battery)
Each one of these power sources can supply the
Telit GE864 / GC864 module
and the whole circuitry
embodied in the
Evaluation Kit
.
Only one of these power sources can be used at a time and it is selectable with two jumpers.
For the battery power supply a Li-Ion battery charger circuit is provided.
3.1.2 Serial interface
The communications between your application and the
Telit GE864 / GC864 module
must be done
through a serial interface which can be a standard CMOS UART or a RS232 port.
All levels of the RS232 port are conforming to RS232 and V.24 standard and a PC serial port can
be directly connected to this connector.
Both these interfaces are supported.
3.1.3 Audio
The
Evaluation Kit board
provides two software/hardware selectable audio paths, the internal and the
external one. All the handset, headset and hands free-car kit functions are supported.
Furthermore for each audio path two solutions are presented: single ended and balanced
3.1.4 GPIO and Leds
All the General Purpose Input Output ports of the
Telit GE864 / GC864 module
are supported in a
dedicated connector and several leds are added as a debug aid.
