2440 I2C new device add

Hello 
i have first project with i2c port 
my problem is from code "rIICCON" what is this ? and meaning ?
is this for ACK ?
is this change for every i2c device ?

this codes use in every device or need change? 

void initi2c()
{
    rGPEUP  |= 0xc000;                  //Pull-up disable
    rGPECON = rGPECON & ~(0xf<<28) | (0xa<<28);  //GPE15:IICSDA ,
GPE14:IICSCL   

    pISR_IIC = (unsigned)IicInt;
    rINTMSK &= ~(BIT_IIC);

      //Enable ACK, Prescaler IICCLK=PCLK/16, Enable interrupt, Transmit
clock value Tx clock=IICCLK/16
      // If PCLK 50.7MHz, IICCLK = 3.17MHz, Tx Clock = 0.198MHz
    rIICCON = (1<<7) | (0<<6) | (1<<5) | (0xf);
    
    
    rIICADD  = 0x10;                    //2440 slave address = [7:1]
    rIICSTAT = 0x10;                    //IIC bus data output enable(Rx/Tx)
  rIICLC = (1<<2)|(1);          // Filter enable, 15 clocks SDA output
delay       added by junon
    
}

void Wri2c(U32 slvAddr,U32 addr,U8 data)
{
    _iicMode      = WRDATA;
    _iicPt        = 0;
    _iicData[0]   = (U8)addr;
    _iicData[1]   = data;
    _iicDataCount = 2;
    
    rIICDS   = slvAddr;                 //0xa0
    rIICSTAT = 0xf0;                    //MasTx,Start
      //Clearing the pending bit isn't needed because the pending bit has
been cleared.
    
    while(_iicDataCount!=-1);

    _iicMode = POLLACK;

    while(1)
    {
        rIICDS     = slvAddr;
        _iicStatus = 0x100;
        rIICSTAT   = 0xf0;              //MasTx,Start
        rIICCON    = 0xaf;              //Resumes IIC operation. 
           
        while(_iicStatus==0x100);
           
        if(!(_iicStatus&0x1))
            break;                      //When ACK is received
    }
    
    rIICSTAT = 0xd0;                    //Stop MasTx condition 
    rIICCON  = 0xaf;                    //Resumes IIC operation. 
    Delay(1);                           //Wait until stop condtion is in
effect.
       //Write is completed.
}
        
void Rdi2c(U32 slvAddr,U32 addr,U8 *data)
{
    _iicMode      = SETRDADDR;
    _iicPt        = 0;
    _iicData[0]   = (U8)addr;
    _iicDataCount = 1;

    rIICDS   = slvAddr;
    rIICSTAT = 0xf0;                    //MasTx,Start  
      //Clearing the pending bit isn't needed because the pending bit has
been cleared.
    while(_iicDataCount!=-1);

    _iicMode      = RDDATA;
    _iicPt        = 0;
    _iicDataCount = 1;
    
    rIICDS        = slvAddr;
    rIICSTAT      = 0xb0;               //MasRx,Start
    rIICCON       = 0xaf;               //Resumes IIC operation.   
    while(_iicDataCount!=-1);
    

    *data = _iicData[1];
}