i am saying in original application of this project , LFSR s will not be required. Instead external source will supply dat at different rates. How this interfacing will be done is not my concern now. Since right now am not getting data from outside so in place of that i try to genrate some ransom numbers(LFSR s) considering them as source of data ... Since data will come at different rate from each source, so clocks of LFSR s are also different . Am totally confused , how to collect all this data in a memory ... Data is real time , constantly coming and i need to pu them in memory simultaneously.. If clock of memory is not synchronised with this LFSRs then how to collect all daa without loosing a single one. I just want the procedure to synchronise this clock (clock of memory) with all LFSRs.