CLOCK_CNTL
OUTREG8(CLOCK_CNTL + 1, (index << 2) & PLL_ADDR);
return INREG8(CLOCK_CNTL + 2);
OUTREG8(CLOCK_CNTL + 1, ((index << 2) & PLL_ADDR) | PLL_WR_EN);
OUTREG8(CLOCK_CNTL + 2, value);
OUTREG8(CLOCK_CNTL, clkNum | CLOCK_STROBE);