void SetBusCLK_32M(void)
{
CLKSEL=0X00; disengage PLL to system
PLLCTL_PLLON=1; turn on PLL
SYNR =0x40 0x03; pllclock=2osc(1+SYNR)(1+REFDV)=64MHz;
REFDV=0x80 0x01;
POSTDIV=0x00;
_asm(nop); BUS CLOCK=32M
_asm(nop);
while(!(CRGFLG_LOCK==1)); when pll is steady ,then use it;
CLKSEL_PLLSEL =1; engage PLL to system;
}