EK-LM4F232H5QD uart BAUD RATE ISSUE

I didnt get any serial data for baudrate 9600 while it works fine for 115200. Code i used is

for 115200 baudrate:-
 ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(),115200,(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |UART_CONFIG_PAR_NONE));

for 9600 baudrate:- 
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(),9600,(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |UART_CONFIG_PAR_NONE)); 

I used Keil.When debugged code doesnt hang , it goes through the sending function too. not going to uarthandler when baudrate set is 9600.
checked ibrd and fbrd values that is fine.
any suggestions??thanks in advance.