TM4C129DNCPDT: Error reading using i2c

Hello Friends

I am working on a project in which I have to read temperature so I am using Tmp75 for that which is on my I2c line of controller Tm4c129dncpdt.
I am doing according to the data sheet of the Ic So do I think and taking the msb and lsb value and getting the temperature correctly but some times it is not that frequent I am getting msb as zero suddenly and some times 0x80 suddenly. I am not sure this because of the temp Ic or the I2c configuration which I am doing. Below is the code which I have used in my confguration

The above is Initialisation

void Temp_Sensor_init(void)
{

SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);

GPIOPinConfigure(GPIO_PB2_I2C0SCL);
GPIOPinConfigure(GPIO_PB3_I2C0SDA);

//Configure pin for use as SCL by the I2C peripheral
GPIOPinTypeI2CSCL(GPIO_PORTB_BASE,GPIO_PIN_2);
//Configure SDA pin for use by the I2C peripheral.
GPIOPinTypeI2C(GPIO_PORTB_BASE,GPIO_PIN_3);

// Set I2C Clock to 100Khz
I2CMasterInitExpClk(I2C0_BASE,g_ui32SysClock, false);


I2CMasterEnable(I2C0_BASE);

ROM_SysCtlDelay(10000);


//Initialinsing for 12bit resolution

I2CMasterSlaveAddrSet(I2C0_BASE, 0x4F, false);

I2CMasterDataPut(I2C0_BASE, 0x01);

I2CMasterControl(I2C0_BASE, I2C_MASTER_CMD_BURST_SEND_START);

while(I2CMasterBusy(I2C0_BASE))
{
}

I2CMasterDataPut(I2C0_BASE, 0x60);

I2CMasterControl(I2C0_BASE, I2C_MASTER_CMD_BURST_SEND_FINISH);

while(I2CMasterBusy(I2C0_BASE))
{

}

I2CMasterSlaveAddrSet(I2C0_BASE, 0x4F, false);
I2CMasterDataPut(I2C0_BASE, 0);
I2CMasterControl(I2C0_BASE, I2C_MASTER_CMD_SINGLE_SEND);
while(I2CMasterBusy(I2C0_BASE))
{
}

And below function I am calling it in cyclic

void Temp_Read_Config(uint8_t slave,uint8_t reg)
{
uint8_t data[4] = {0};
uint32_t main_data = 0;
uint8_t byte = 0;
float raw_value = 0;

I2CMasterSlaveAddrSet(I2C0_BASE, slave, true);

while(I2CMasterBusy(I2C0_BASE));

I2CMasterControl(I2C0_BASE, I2C_MASTER_CMD_BURST_RECEIVE_START);

while(I2CMasterBusy(I2C0_BASE));

byte = I2CMasterDataGet(I2C0_BASE);

data[0] = byte;

UARTprintf("Higr : %x\r\n",byte);



I2CMasterControl(I2C0_BASE, I2C_MASTER_CMD_BURST_RECEIVE_FINISH);

while(I2CMasterBusy(I2C0_BASE));

ROM_SysCtlDelay(10);
byte = 0;

byte = I2CMasterDataGet(I2C0_BASE);



data[1] = byte;

data[1] = data[1] & 0xF0;

data[1] = data[1] >> 4;

UARTprintf("lower : %x\r\n",byte);

main_data = (data[0] << 4) | (data[1]);

raw_value = (float)(128*main_data) / 2048;

memset(temp_data,0,sizeof(temp_data));

sprintf(temp_data,"raw : %f data : %x\r\n",raw_value,main_data);

UARTprintf(temp_data);
}

}

Is their any problem regarding my i2c configuration suggest me