MSP430FG437 : sine Wave Generation using DMA

It will generate 43Khz sine wave
// ====================

//******************************************************************************
#include  <msp430xG43x.h>

//------------------------------------------------------------------------------
// RAM - 12-bit Sine Lookup table with 32 steps
//------------------------------------------------------------------------------
static int Sin_tab[32] = {
        2048,
        2447,
        2831,
        3185,
        3495,
        3750,
        3939,
        4056,
        4095,
        4056,
        3939,
        3750,
        3495,
        3185,
        2831,
        2447,
        2048,
        1648,
        1264,
        910,
        600,
        345,
        156,
        39,
        0,
        39,
        156,
        345,
        600,
        910,
        1264,
        1648
};

void main(void)
{
        WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog
        FLL_CTL0 |= DCOPLUS + XCAP18PF;           // DCO+ set, freq = xtal x D x N+1
        SCFI0 = FLLD_4+FN_4;                      // x4 DCO freq, 16MHz nominal DCO
        SCFQCTL = 63;                            // (63+1) x 32768 x 4 = 8 MHz
     FLL_CTL1 |= XT2OFF;
   
      // For SMCLK
      P1SEL |= 0x10;
      P1DIR |= 0x10;
    
      // For MCLK
      P1SEL |= 0x02;
      P1DIR |= 0x02;
             
      ADC12CTL0 = REFON;                        // Internal ref
      DMA0SA = (int) Sin_tab;                   // Source block address
      DMA0DA = (unsigned int)&DAC12_0DAT;       // Destination single address
      DMA0SZ = 0x20;                            // Block size
      DMACTL0 = DMA0TSEL_5;                     // DAC12IFG trigger
      DMA0CTL = DMADT_4 + DMASRCINCR_3 + DMAEN; // Rpt, inc src, word-word
      DAC12_0CTL = DAC12LSEL_2 + DAC12IR + DAC12AMP_5 + DAC12IFG + DAC12ENC;
                                            // Config
                                            // **force first interrupt**

      CCTL1 = OUTMOD_3;                         // Set/reset
      CCR1 = 1;                                         // PWM Duty Cycle   
      CCR0 = 2;                                
      TACTL = TASSEL_2 + MC_1;                  // SMCLK, up-mode

      _BIS_SR(LPM0_bits);                       // Enter LPM0
 
}