
DECA User Manual
112
www.terasic.com
May 22, 2015
Figure 7-22 Running result of SD_CARD demo on DECA board
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This demonstration shows how to implement an audio player using the DECA board with the built-in
Audio CODEC chip. This demonstration is developed based on Qsys and Eclipse. SW0 is used to
configure this audio system which specify playing source to be Line-in or Beep generation.
Figure 7-23
shows the block diagram of the Audio Player design. There are hardware and software parts in the block
diagram. The software part stores the NiosII program in the on-chip memory. The software part is built
by Eclipse written in the C programming language. The hardware part is built by Qsys under Quartus II.
The hardware part includes all the other blocks.