LAUNCHXL-F28379D: SCI-A transmitting issue

Hi , 

I am using LAUNCHXL-F28379D. I have configured SCI-A for baudrate : 2M.

SciaRegs.SCIHBAUD.all = 0x0000;
SciaRegs.SCILBAUD.all = 0x0002;

Tested the code. Data is transmitting & receiving properly.

void main(void)
{

InitSysCtrl();

InitGpio();

GPIO_SetupPinMux(43, GPIO_MUX_CPU1, 15);
GPIO_SetupPinOptions(43, GPIO_INPUT, GPIO_PUSHPULL);

GPIO_SetupPinMux(42, GPIO_MUX_CPU1, 15);
GPIO_SetupPinOptions(42, GPIO_OUTPUT, GPIO_ASYNC);

DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

EALLOW;
CpuSysRegs.PCLKCR7.bit.SCI_A = 1;
EDIS;

LoopCount = 0;

EALLOW;
scia_uart_initialisation();
EDIS;

EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

msg = "\r\n Testing SCI Communication...!!! \n\r";
scia_msg(msg);

char snum[10];
while(1)
{
unsigned long int ii=0;
for (ii = 0; ii < 250000; ii++)
{
ltoa(ii,snum);
scia_msg(snum);
scia_msg("\n\r");
memset(snum,0,sizeof(snum));

}

void scia_uart_initialisation()
{

EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.SCIA_RX_INT = &sciaRxFifoIsr;
EDIS; // This is needed to disable write to EALLOW protected registers

EALLOW;
scia_fifo_init(); // Initialize the SCI FIFO

PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER9.bit.INTx1 = 1; // PIE Group 9, INT1
PieCtrlRegs.PIEIER9.bit.INTx2 = 1; // PIE Group 9, INT2
IER |= 0x100; // Enable CPU INT
EINT;
}

void scia_xmit(int data)
{
while (SciaRegs.SCIFFTX.bit.TXFFST != 0) {}
SciaRegs.SCITXBUF.all = data;
}

void scia_fifo_init()
{
SciaRegs.SCICCR.all = 0x0007; // 1 stop bit, No loopback, No parity,8 char bits, async mode, idle-line protocol
SciaRegs.SCICTL1.all = 0x0003; // enable TX, RX, internal SCICLK, Disable RX ERR, SLEEP, TXWAKE
// SciaRegs.SCICTL2.all = 0x0003;
SciaRegs.SCICTL2.bit.TXINTENA = 1;
SciaRegs.SCICTL2.bit.RXBKINTENA = 1;

SciaRegs.SCIHBAUD.all = 0x0000;
SciaRegs.SCILBAUD.all = 0x0002;

SciaRegs.SCIFFTX.all = 0xE040;
SciaRegs.SCIFFRX.all = 0x0021;
SciaRegs.SCIFFCT.all = 0x0;

SciaRegs.SCICTL1.all = 0x0023; // Relinquish SCI from Reset

SciaRegs.SCIFFRX.bit.RXFIFORESET = 1;
}

//
// scia_msg - Transmit message via SCIA
//
void scia_msg(char * msg)
{
int i = 0;
while(msg[i] != '\0')
{
scia_xmit(msg[i]);
i++;
}
}

interrupt void sciaRxFifoIsr(void)
{
ReceivedChar = SciaRegs.SCIRXBUF.all; // Read data
scia_xmit(ReceivedChar); // For Debugging
SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1; // Clear Overflow flag
SciaRegs.SCIFFRX.bit.RXFFINTCLR=1; // Clear Interrupt flag
PieCtrlRegs.PIEACK.all|=0x100; // Issue PIE ack

}

But on continuous transmission the data transmission fails. Please help me to solve the issue.

Regards,

Vijesh