PLLA9FRACO_MDIV_MASK
mdiv = (pll_con0 >> PLLA9FRACO_MDIV_SHIFT) & PLLA9FRACO_MDIV_MASK;
old_mdiv = (pll_con0 >> PLLA9FRACO_MDIV_SHIFT) & PLLA9FRACO_MDIV_MASK;
con0 &= ~((PLLA9FRACO_MDIV_MASK << PLLA9FRACO_MDIV_SHIFT) |