SPI communication not responded on MSP430F47167 with DATAFLASH(45DB321)

/*--------------------------------------------------------------------
 * Name   :main.c
 * Purpose: Writing and Reading data to DATAFLASH using SPI
 * Date   :2 Oct 2010
 * -----------------------------------------------------------------*/

#include  <msp430x471x7.h>

/*-------------------------------------------------------------------
 * 	MACRO definitions
 * -----------------------------------------------------------------*/
#define CS_DHIGH  P2DIR|=BIT0
#define CS_DLOW   P2DIR&=~BIT0

/*------------------------------------------------------------------
 * 	Function Prototyping
 * ----------------------------------------------------------------*/
void delay(unsigned int itime);
void init_spi(void);
void init_UART(void);
void init_cpu(void);

/*--------------------------------------------------------------------
 * Function name:main
 * Purpose: Initialization for all modules and call function buffr1wr
 * 			and buffr1rd continuosly. 
 * -----------------------------------------------------------------*/

void main(void)
{	
	init_cpu();
	init_spi();
	init_UART();
	
	
	while(1)
	{	
		
		CS_DHIGH; 
		CS_DLOW;
		delay(1);
		UCB1TXBUF=0x9F;
		delay(1);
		while(!(UC1IFG&UCB1RXIFG));
		UCA1TXBUF=UCB1RXBUF;
				
		UCB1TXBUF=0xFF;
		while(!(UC1IFG&UCB1RXIFG));
		UCA1TXBUF=UCB1RXBUF;
				
		UCB1TXBUF=0xFF;
		while(!(UC1IFG&UCB1RXIFG));
		UCA1TXBUF=UCB1RXBUF;
				
		UCB1TXBUF=0xFF;
		while(!(UC1IFG&UCB1RXIFG));
		UCA1TXBUF=UCB1RXBUF;
							
		delay(1);
		CS_DHIGH;
		delay(10);				        							
	}
}

void init_cpu(void)
{
   volatile unsigned int i;

  WDTCTL = WDTPW +WDTHOLD;                  // Stop WDT
  FLL_CTL0 |= XCAP14PF;                     // Configure load caps

  // Wait for xtal to stabilize
  do
  {
    IFG1 &= ~OFIFG;                         // Clear OSCFault flag
    for (i = 0x47FF; i > 0; i--);           // Time for flag to set
  }
  while ((IFG1 & OFIFG));                   // OSCFault flag still set?

}
/*--------------------------------------------------------------------
 * Function name:delay
 * Purpose: General delay function. 
 * -----------------------------------------------------------------*/

void delay(unsigned int itime)
{
  unsigned int i,j;
  for(i=0;i<itime;i++)
    for(j=0;j<50;j++);
    
}
/*--------------------------------------------------------------------
 * Function name:init_UART
 * Purpose: Initialization UART for serial communication
 * 			at baudrate of 9600. 
 * -----------------------------------------------------------------*/

void init_UART(void)
{
  UCA1CTL1 |=UCSWRST;
  UCA1CTL0 = UCMODE_0 ;
  UCA1CTL1 = UCSWRST + UCSSEL_1;
  UCA1BR0 = 0x03;
  UCA1BR1 = 0x00;
  UCA1MCTL = 0x06;
  P1SEL |=BIT6 + BIT7;
  
  UCA1CTL1&=~UCSWRST;  
}
void init_spi(void)
{
	UCB1CTL1|=UCSWRST;
  	UCB1CTL0 =UCSYNC + UCMODE_0+ UCMST + UCMSB;
  	UCB1CTL1 =UCSSEL_2 + UCSWRST;
  	UCB1BR0 = 0x00;      //1MHz CLOCK.
  	UCB1BR1 = 0x00;
   	P2SEL|= BIT1+ BIT2+BIT3;
  	P2DIR = BIT1+ BIT3;
   	UCB1CTL1&=~UCSWRST; 
  	
}