A key feature of the STARTUPE3 component is to connect the
user design to some of the dedicated configuration pins. These pins can be useful for
accessing configuration flash as part of the user design. The STARTUPE3 represents connections
to the external pins, so an input to the STARTUPE3 is a connection to an
output pin or bidirectional pin, and an output from STARTUPE3 is the
bidirectional pin input back into the user design (see the following figure).
Figure 1. STARTUPE3 Connections to Dedicated Pins
