CCS/MSP430G2955: G2955 UART not working like G2553

Tool/software: Code Composer Studio

Hi,
I have created a UART RS485 code for MSP430G2955 by just changing the ports of MSP430G2553. The code works perfectly on 2553 , however it doesn't work on 2955. Is there any difference between the register configurations of these two ICS? I have used the following settings

    P3SEL    |= RS485RXD+RS485TXD;                    
    P3SEL2   |= RS485RXD+RS485TXD;                    
    RS485TE_SEL    &= ~(RS485TE);         
    RS485TE_SEL2   &= ~(RS485TE);            
    RS485TE_DIR    |=  (RS485TE);                   
    RS485TE_OUT    &= ~(RS485TE);             
    UCA0CTL1 |= UCSWRST;           
    UCA0CTL0  = 0xC0;                   
    UCA0CTL1 |= UCSSEL_2| UCRXEIE;         
    UCA0BR0 =0x71;        
    UCA0BR1 =0x02;           
    UCA0MCTL |= UCBRS_0;
    UCA0CTL1 &= ~UCSWRST;  
    IE2      |= UCA0RXIE;     
    RS485_rx_head=0;               
    RS485_rx_tail=0;