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//******************************************************************************
//   Program to demonstrate a" no jitter" high frequency  3Mhz signal out of 32Khz 
//     crystal              
//            |                 |
//            |             P1.1|--> MCLK = 3Mhz
//            |                 |
//            |             P1.5|--> ACLK = 32khz
//            |                 |
//
//   
//   Microtrend Systems Inc.
//  January 2003
//  Built with IAR Embedded Workbench Version: 1.25A
//******************************************************************************
#include "msp430x43x.h"
 
void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;          // stop watchdog timer
  FLL_CTL0 =DCOPLUS+ XCAP18PF;      // division for DCO+ enable caps
  _BIS_SR(SCG0);           // SCG0 bit set in SR to cancel FLL action    
  SCFQCTL=SCFQ_M;          //  M bit set to cancel modulation            
  SCFI1 =0x98;            // only 5 DCO bits in SCFI1 determine frequency
                        // here 0x98= aprox. 3Mhz
  SCFI0 =0x0;            //set DCO range 0.7 - 6 MHz open loop
                        // here 0x98= aprox. 3Mhz
  FLL_CTL1=SELM_A;      //CPU runs on ACLK     
  P1DIR = 0xb0;         // P1.4,P1.7 & P1.5 to output direction
  P1SEL = 0x30;         // P1.4,P1.7 & P1.5 to output SMCLK & ACLK
  P1OUT=0x80;          //P1.7 is enable TPS61130 dc/dc converter
    while(1);            // loop 
}