Communication with ADC on Cyclone 2

Question

Hi,

I am wondering if there are any examples on how to communicate with the ADC Chip (WM8731) on the cyclone 2. I understand that the board uses the chip as a slave, but have no idea how to take samples from it.

In the bigger picture, I am connecting my guitar into the mic input of the board and will do some signal processing from there. At the moment, I have no idea how to set up the board correctly. Any suggestions/help?

altera_forum · Answer

Do you have a de2/de2-70 board?

if it's your case, take a look to Audio example included in CD-ROM for both boards.

http://www.terasic.com/downloads/cd-rom/ (http://www.terasic.com/downloads/cd-rom/)

altera_forum · Answer

I have a Cyclone 2 EPC20F484C7. Not sure what is a DE/DE2-70 board. Sorry.

I have gone through the examples in the CD-ROM but I am very confused with all the code as I am not familiar with Verilog. Also, must we use the NIOS processor to communicate with the ADC? Is it possible to build a block diagram which does the job and if so, where could I find such an example?

Apologies, I am totally new to FPGAs and any help would be appreciated.

altera_forum · Answer

hi! get  university program audio core, and audio and video config core... that vil help... contains documentation abt how to use them...

altera_forum · Answer

All Terasic Dev Kits with an audio codec come with Verilog demostration code. As far as I understand the code, you can use it without NIOS II. It has a state machine that controls the codec setup (sending several commands). I agree, that the demostration code is far from being instructive.

altera_forum · Answer

Hello..ok , let say that I want to call the data which has been digitized by ADC(to modify the data), then how do I do it?

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Communication with ADC on Cyclone 2

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