DK-DSP-2C70N Altera, DK-DSP-2C70N Datasheet - Page 30

• Manufacturer Part Number: DK-DSP-2C70N
• Description: DSP KIT W/CYCLONE II EPS2C70N
• Manufacturer: Altera
• Series: Cyclone® IIr
• Type: DSPr

Specifications of DK-DSP-2C70N

• Contents: Dev Board, Quartus®II Web Edition, Cables, Accessories, Reference Designs and Demos
• For Use With/related Products: Cyclone ll 2C70N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-1699

Testing the Board Using the Factory Design
2–20
DSP Development Kit, Cyclone II Edition
Collecting Data Using the SignalTap II Logic Analyzer
To collect data from the design for analysis, follow these steps.
1.
2.
Analyzing the Data in the MATLAB Software
To analyze the a2db data from sines_auto_signaltap_0.txt in MATLAB,
follow these steps:
1.
2.
In the Instance Manager section of the SignalTap II window, click
Run Analysis and observe the following:
a.
b.
1
Choose Create SignalTap II List File from Create / Update (File
Menu). The Quartus II software generates the file
sines_auto_signaltap_0.txt in the project directory.
Start the MATLAB software.
At the MATLAB Command Window, type the following command:
nstp_plot('sines_auto_signaltap_0.txt') r
The MATLAB software displays a normalized plot of the DAC
CHANNEL A input similar to
Observe the D/A converter input on comb[13..0]. It shows a
combination of two sine waves.
Observe the A/D converter output on a2db[11..0]. It shows
an attenuated combination of two sine waves.
Getting Started User Guide
The A/D converter output is attenuated because the bit
resolution is reduced from 14 bits to 12 bits. Analog
circuitry on the Cyclone II DSP development board also
causes some additional attenuation.
Figure
2–11.
Altera Corporation
August 2006