D_STAT_CIS_BIT
dispatcher->bit = D_STAT_CIS_BIT(ch);
__dmac_enabled_channel |= D_STAT_CIS_BIT(ch);
__dmac_enabled_channel &= ~D_STAT_CIS_BIT(ch);
_reg_write_4(D_STAT_REG, D_STAT_CIS_BIT(ch));