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Simplistically:
1) Configure the Audio CODEC via I2C
2) Buffer the incoming ADC data samples in the FPGA
3) Write the data to the SD card via an SPI interface.
I suspect that may not offer you all the answers you're hoping for. For that (in this forum at least) you need to ask questions that are more targeted, with details as to what it is you're hoping to do...
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Thanks for the reply a_x_h_75. Sorry for not making clear my question. Actually i am working on the current demo program that come with the DE1. (DE1_i2sound). It work exactly like a karaoke machine, but it doesn't have the feature of saving the audio data. What i want to do is to build on this current demo DE1_i2sound to have an option to save the audio file to the SD card. But i dont know how to do it, as i am very new to Altera and verilog. Any help will be deeply appreciated :D
:D
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