Hello ,

I need to implement volatge detection ADC in DE2-115 educational board.

Can any one hlep me out, if there is an Ip core or examples available.

Thanks,

raja.

Hi raja.

For the beginning - what kind of ADC do you have (chip ID would be the best)? And what interface to FPGA you have?

Hello kuzmi4,

I am planning to use CODEC already available on DE2-115 board, which is 24 bit audio codec form Wolfson WM8731, from the data sheet data interface mode is I2C.

I am attaching the data sheet provided along with board.

Can we implement using this.

Cordic IP core is already there in xilinx itself you can create that and instantiate in verilog top module and craete UCF file and cdc file and configure on FPGA board

you implement ADC on any FPGA basys2 board , see this wedsite for board http://www.digilentinc.com/

Hi raja.

Regarding your chip - you have I2C MPU interface (for controls) and "DIGITAL AUDIO INTERFACE" for DAC. You will need I2C for configure WM8731 and then you will use "DIGITAL AUDIO INTERFACE"/ADC part for get input data. Like I case see, "DIGITAL AUDIO INTERFACE" it is I2S interface:
https://www.sparkfun.com/datasheets/BreakoutBoards/I2SBUS.pdf
You can simple construct receiver, or you can get this one, from OpenCores:
http://opencores.org/project,i2s_interface
(I think PDF in this project also can give you all required info)