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DE2-70 User Manual
83
• Press KEY3 on the DE2-70 board can play the next music file stored in the SD card.
• Press KEY2 and KEY1 will increase and decrease the output music volume respectively.
.
Figure 6.16 illustrates the setup for this demonstration.
SD Card
Driver
Audio CODEC
Controller
On-Chip
Audio
PCM Buffer
with music fils(wav)
SD Card
Speaker
Lock
Figure 6.16. The setup for the SD music player demonstration.
6.9 Music Synthesizer Demonstration
This demonstration shows how to implement a Multi-tone Electronic Keyboard using DE2-70
board with a PS/2 Keyboard and a speaker.
PS/2 Keyboard is used as the piano keyboard for input. The Cyclone II FPGA on the DE2-70 board
serves as the Music Synthesizer SOC to generate music and tones. The VGA connected to the
DE2-70 board is used to show which key is pressed during the playing of the music.