Altera High-Speed Development Kit, Stratix GX Edition - Manual (Page 83)

Altera Corporation Quartus II Version 3.0 7–1
7. Diagnostic Test Details
Standard Tests This section describes the functionality of all of the standard tests. Refer
to “Perform the Standard Tests” on page 5–10 for information on how to
run the tests.
User I/O
This section describes the user I/O test. Refer to “User I/O” on page 5–10
for information on how to perform the test.
User I/O Test Overview
The Stratix and Stratix GX devices each have a test for the user I/O and
LEDs. This I/O test design imitates a television remote control. The
pushbutton switches operate as channel up, channel down, volume up,
and volume down. The LEDs indicates the volume level, and the 7-
segment display indicates the channel. The channel up and channel down
buttons increment and decrement the number displayed on the 7-
segment displays. The volume up and volume down buttons illuminate
more or fewer LEDs. Dipswitches 7 through 1 allow you to display a
specific channel number, represented in binary, on the 7-segment
displays. Dipswitch 8 is an “enter” button that loads the binary value
from the dipswitches onto the 7-segment displays as a decimal value.
When the 7-segment displays show 99 and you press the channel up
button, the channel rolls over to 00. When displays show 00 and you press
the channel down button, the channel rolls over to 99. If all six LEDs are
illuminated and you press the volume up button, the volume remains at
its highest level. If all six LEDs are off and you press the volume down
button, the volume remains off.
1
The board does not actually make sounds. The LEDs simply
represent what the volume would be.
The device clear buttons (GX_DEV_CLR for the Stratix GX device and
S_DEV_CLR for the Stratix device ) reset the design. When pressed, the
LEDs turn off and the 7-segment displays show 00. The board contains an
external debouncing chip; therefore, the pushbutton switches do not have
to be debounced inside the Altera devices.