Altera DSP Development Kit, Cyclone II Edition Getting Started - Manual (Page 22)

2–12 Getting Started User Guide Altera Corporation
DSP Development Kit, Cyclone II Edition August 2006
Using the Reference Designs & Lab
Using the
Reference
Designs & Lab Altera provides one lab with the DSP Development Kit, Cyclone II Edition
to help you get started building applications. The lab is described AN376:
Cyclone II Filtering Lab. You can find the design in the Examples directory.
Check for additional reference designs on the Altera web site.
Setting Unused Pins in the Reference and User Designs
In the factory design and in the lab included with the DSP Development
Kit, Cyclone II Edition, all unused pins are set as tri-stated inputs and the
following procedure is not necessary. However, when compiling your
own designs, Altera recommends that you set all unused pins as tri-stated
inputs.
w The Quartus II software default settings configure unused pins
as outputs driving ground. The Cyclone II DSP development
board components may be damaged by having ground signals
driven onto pins that drive V
CC
. You must complete the
following procedure.
To set unused pins as tri-stated inputs, follow these steps:
1. Run the Quartus II software.
2. Choose Device (Assignments menu).
3. On the Device page of the Settings dialog box, click Device & Pin
Options
, then click the Unused Pins tab.