Fastrax IT321, Техническое описание

Страница: 29 / 35

2007-11-19
Page 29 of 35
IT321_Tech_doc_12
7. IT321 APPLICATION BOARD
The Fastrax IT321 Application Board provides the IT321 connectivity
to the Fastrax Evaluation Kit or to other evaluation purposes. It pro-
vides a single PCB board equipped with the IT321 module, a control-
lable switch for VDD supply, a 1.8V regulator, a 4 channel level trans-
lator for 1.8V I/O to 3.3V conversion, an MCX antenna connector, and
a 2x20 pin Card Terminal connector.
7.1 Card Terminal I/O-connector
The following signals are available at the 40-pin Card Terminal I/O
connector J2. The same pin numbering applies also to the Fastrax
Evaluation Kit pin header J4. Note that UART Port A maps to serial
Port 0 at the Fastrax Evaluation Kit. I/O signal levels are CMOS 3.3V
compatible unless stated otherwise.
Table 7 IT321 Application Board connectivity
Pin Signal name I/O
Alternative
GPIO name
Interface to Fastrax Evaluation
Kit
1 - - - Not connected
2 GND - - Ground
3 - - - Not connected
4 GND - - Ground
5 TXA_CON O - UART 0 async. output
6 GND - - Ground
7 RXA_CON I - UART 0 async. input
8 GND - - Ground
9 VDD_CON I - Power supply input +3.3V
10 GND - - Ground
11 PPS_CON O - 1PPS signal output
12 GND - - Ground
13 XRESET_CON I - Active low async. system reset
used to switch VDD supply
14 - - - Not connected