Siemens XT55 AVL - Manual (Page 35)

XT55 AVL User’s Guide
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XT55_avl_ug_V03 Page 35 of 37 28.06.2004
4.3 Digital Inputs
The input pins (pin 20 – GPIO 15, pin 30 – GPIO 3) of the 80-pin board-to-board connector
are pre-defined as digital inputs.
These input pins can be connected to the CMOS +3.3V DC. The figure below illustrates how
to connect these inputs.
Figure 12: Connection example for GPIO 15 and GPIO 3