de2 115 board audio codec i2c address

hello everyone,

im trying to access audio codec and i faced a problem. what is the slave address of this audio codec?

i looked into the demostration files for getting an idea about i2c bus. i saw these lines:

//=========start===========

6'd1 : begin

SD = I2C_DATA;

SDO = 0;

end

6'd2 : SCLK = 0;

//======SLAVE ADDR=========

6'd3 : SDO = SD[23];

6'd4 : SDO = SD[22];

6'd5 : SDO = SD[21];

6'd6 : SDO = SD[20];

6'd7 : SDO = SD[19];

6'd8 : SDO = SD[18];

6'd9 : SDO = SD[17];

6'd10 : SDO = SD[16];

6'd11 : SDO = 1'b1;//ACK

//========SUB ADDR==========

6'd12 : begin

SDO = SD[15];

ACK1 = I2C_SDAT;

6'd13 : SDO = SD[14];

6'd14 : SDO = SD[13];

6'd15 : SDO = SD[12];

6'd16 : SDO = SD[11];

6'd17 : SDO = SD[10];

6'd18 : SDO = SD[9];

6'd19 : SDO = SD[8];

going so far..

etc. but, i couldn't understand difference between sub addr and slave addr.

the sub address may be register address. but, what should be slave address?

i need your help

thanks,

can