TMS570LS0432: TMS570LS0432 SCI Rx problem in interrupt mode

Hello,

i am using TMS570LS0432 . I want  communicate SCI Rx in interrupt mode and transmits the received data to terminal for every 1 second.

For that

I enabled Rx INT  and i am receiving data correctly from terminal to microcontroller.

For every 1 second transmission from micro-controller to terminal i have enable RTI INT of 100ms.and i am transmitting the data for every 1 second.

If i send data from terminal then i am able to receive data correctly and same i am able to transmit the correct data on terminal.but in case when i am not sending any data from terminal to micro-controller still i am receiving garbage data because every time code going in RX ISR even i am not sending any data from terminal.How can i avoid this issue is there any required to change in scisend() function.

Here is my code

char  ReceivedChar[1]={0};

char count=0;

int main(void)

{

_enable_IRQ();

  sciInit();

  rtiinit();

rtiStartCounter(rtiCOUNTER_BLOCK0); 

sciReceive(scilinREG, 1, &ReceivedChar[0]);

while(1)

{

  if(count==10)
        {
            memset(Tx_buff, 0, sizeof(Tx_buff));
            sprintf(Tx_buff,"\r\nSPEED_EST_RPM : %d\0",ReceivedChar[0]);

            sciSend(scilinREG,strlen(Tx_buff),(uint8*)Tx_buff);
            gioToggleBit(gioPORTA,  1);
            count=0;
        }

}

}

/*******************END of Main code******************/

void sciNotification(sciBASE_t *sci, uint32 flags)
{

       sciReceive(sci, 1, &ReceivedChar[0]);

}

void rtiNotification(uint32_t notification)
{
    if(notification==rtiNOTIFICATION_COMPARE0)
    {
        count++;

    }

}

Thanks in advance..