I2C vhdl

Hi

Can anyone please help me?  I need to implement an i2c bus for a project.  I am using a dsp to send commands to registers in an fpga from where I will control the i2c.  I am using an existing reference design for my development board.  Can anyone please help me with something?  I got the documentation for the i2c master core written by R. Herveille.  I know that I need to write to registers to read and write, but I don't know how to access those registers using the reference design.  In other words, I just need to know if anyone can help me to integrate the i2c controller using the reference design?

Thank you.

Sebastiaan Heunis