ADAU1466 and Arduino communication

Hi,

I'm trying to make my ADAU1466 eval board to communicate with my Arduino ATMEGA2560. I'm using Arduinos code "i2c_scanner" that should be able to scan and detect the I2C addresses for slave devices. I am not getting anything from the scan, so i'm wondering if there is something im doing wrong with setting up the ADAU1466 board. How can i put it into slave-mode?

Best regards,

Casper