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configuring UART3 for lpc 2378

sorry for the previous post here i am reposting my issue
I am trying to configure the UART 3 of MCP2378 for the baud rate 115200.i successfully configured UART0 for the same baud rate .but when i tried it with UART 3 i get some junk values probably due to some baud rate miss match.Clock for both UARTs are same (cclk/4).Did any body configured the port p4.28 and p4.29 for uart 3 if yes please help me .
following is the code used for initialization.

int main (void)
{
u8 ch1;

UARTInit(3,112500);
while(1)

{

ch1=UARTByteRead(3);
UARTByteSend(3,ch1);

}

while(1);
}



u8 UARTByteRead(u8 ucPortNo)
{
u8 ch;
switch(ucPortNo)
{
case 0: while(!(U0LSR & LSR_RDR));
        ch=U0RBR;
                break;
case 1: while(!(U1LSR & LSR_RDR));
        ch=U1RBR;
                break;
case 2: while(!(U2LSR & LSR_RDR));
        ch=U2RBR;
                break;
case 3: while(!(U3LSR & LSR_RDR));
        ch=U3RBR;
                break;
}
return(ch);
}



u8 UARTByteSend(u8 ucPortNo,u8 ucByte)
{
switch(ucPortNo)
{
case 0: U0THR =ucByte;
                while(!(U0LSR & LSR_TEMT ));
                break;

case 1:U1THR =ucByte;
                while (!(U1LSR & LSR_TEMT ));

                break;

case 2: U2THR = ucByte;
                while (!(U2LSR & LSR_TEMT));
                break;

case 3:
       U3THR = ucByte;
                while (!(U3LSR & LSR_TEMT));

                break;
}
}




void UARTInit(u8 ucPortNo,u16 ucBaudrate)
{
UART_BaudRateConfig(ucPortNo,ucBaudrate);

switch(ucPortNo)
{

case 0:
           PINSEL0 =0x00000050;
           U0FCR =0x07;  /* Enable and reset TX and RX FIFO.*/
           break;

case 1:
           PINSEL0 |=0x40000000; //original PIN configuration
           PINSEL1 |=0x00000001;
           U1FCR =0x07; /* Enable and reset TX and RX FIFO.*/
           break;

case 2:
           PCONP |=0x01000000;
           PINSEL0 |=0x00500000;//selecting thefunction for the pins


           U2FCR =0x07;   /* Enable and reset TX and RX FIFO.*/
           break;

case 3:
           PCONP |=0x02000000;  // enabling the clock for uart3
           PINSEL9 |=0x0f000000;//selecting the function for the pins p4.28 & p4.29

           U3FCR =0x07;  /* Enable and reset TX and RX FIFO.*/

       break;
}
}






UART_BaudRateConfig(u8 PortNo,u16 Baudrate)
{
u16 DIV;
switch(PortNo)
{
case 0:

           U0DLM =0x0;
           U0DLL =8;
           U0FDR=0x92;
           U0LCR=0x03;
           break;

case 1:U1LCR =0x83;

           U1DLM =DIV / 256;
           U1DLL =DIV % 256;
           U1LCR=0x03;
           break;

case 2:U2LCR =0x83;
           U2TER =0x80;

           U2DLM =0x0;
           U2DLL =8;
           U2FDR=0x92;
           U2LCR =0x03;
           break;

case 3:U3LCR =0x83;


           U3DLM =0x0;
           U3DLL =8;
           U3FDR=0x92;
           U3LCR=0x03;
           U3TER =0x80
           break;

}
}