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DE2-70 User Manual
89
• Load the Software Execution File into FPGA. (note *1)
• Configure audio with the toggle switches.
• Press KEY3 on the DE2-70 board to start/stop audio recoding (note *2)
• Press KEY2 on the DE2-70 board to start/stop audio playing (note *3)
Note:
(1). Execute DE2_70_AUDIO\demo batch\audio.bat will download .sof and .elf files.
(2). Recording process will stop if audio buffer is full.
(3). Playing process will stop if audio data is played completely.
Toggle Switches 0 – DOWN Position 1 – UP Position
SW0 Audio is from MIC Audio is from LINE-IN
SW1 Disable MIC Boost Enable MIC Boost
SW2 Disable Zero-cross Detection Enable Zero-cross Detection
SW5
(0 – DOWN;
1- UP)
SW4
(0 – DOWN;
1-UP)
SW3
(0 – DOWN;
1-UP)
Sample Rate
0 0 0 96K
0 0 1 48K
0 1 0 44.1K
0 1 1 32K
1 0 0 8K
Unlisted combination 96K
Table 6.4. Toggle switch setting for audio recorder and player.