ttribute shreg_extract : string;
attribute shreg_extract of cross_clk_bit : entity is "no";
attribute DowngradeIPIdentifiedWarnings: string;
attribute DowngradeIPIdentifiedWarnings of rtl : architecture is "yes";
attribute ASYNC_REG : string;
attribute SHIFT_EXTRACT : string;
-- attribute RLOC : string;
attribute ASYNC_REG of data_sync : signal is "TRUE";
attribute SHIFT_EXTRACT of data_sync : signal is "NO";