Altera DE2-70 User Manual page 92

• Load the Software Execution File into FPGA. (
• Configure audio with the toggle switches.
• Press KEY3 on the DE2-70 board to start/stop audio recoding (
• Press KEY2 on the DE2-70 board to start/stop audio playing (
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
SW0
SW1
SW2
Table 6.4. Toggle switch setting for audio recorder and player.
0 – DOWN Position
Audio is from MIC
Disable MIC Boost
Disable Zero-cross Detection
SW5 SW4
(0 – DOWN; (0 – DOWN;
1- UP) 1-UP)
0 0
0 0
0 1
0 1
1 0
Unlisted combination
)
note *1
note *3
1 – UP Position
Audio is from LINE-IN
Enable MIC Boost
Enable Zero-cross Detection
SW3
(0 – DOWN; Sample Rate
1-UP)
0 96K
1 48K
0 44.1K
1 32K
0 8K
96K
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DE2-70 User Manual
)
note *2
)