GPCPLL_CFG2_SDM_DIN_WIDTH
MASK(GPCPLL_CFG2_SDM_DIN_WIDTH);
*sdm_din = (rem >> BITS_PER_BYTE) & MASK(GPCPLL_CFG2_SDM_DIN_WIDTH);
(MASK(GPCPLL_CFG2_SDM_DIN_WIDTH) << GPCPLL_CFG2_SDM_DIN_SHIFT)