User's Manual

Telit TRIZIUM Product Description
80264ST10007a Rev. 4– 09/09/04
Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 30 of 202
3.1 Evaluation Kit description
For a detailed description of the Telit Evaluation Kit refer to the documentation provided with the Telit TRIZIUM
Hardware User Guide.
The Telit Evaluation Kit can be divided into different blocks depending on the function they implement.
A schematic showing the EVK board and its blocks is shown:
3.1.1 Power Supply
In the Board there are three different power sources, that embrace a wide range of applications, from the automotive
+12V 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 both the Telit TRIZIUM 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 TRIZIUM 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 conform to RS232 and V.24 standard and a PC serial port can be directly connected to
this connector.
+5V
POWER SUPPLY
REGULATORS
BATTERY SUPPLY
& CHARGE CONTROL
+12V
POWER SUPPLY
REGULATORS
ADAPTOR
TRIZIUM
RS232
LEVEL
TRANSLATOR
+3V UART
GPIO & LEDS
ANTENNA COAX
FREE SPACE
EXT
EAR
SINGLE
ENDED
AUDIO/BF
FILTERS
SIM HOUSING
EXT
MIC
BALAN
CED
EXT
EAR
BRIDGED
EXT
MIC
UNBAL
ANCE
D
HAND
SET
MIC
UNBAL
ANCE
D
HAND
SET
MIC
BALAN
CED
HANDSET
EAR
SINGLE
ENDED
HANDSET
EAR
BRIDGED
& RESET
BUTTONS
EVK
HANDSET
CONNECTOR
HIGH POWER
EXT. EAR
ON/OFF
GPIO