Forum Discussion
Altera_Forum
Honored Contributor
Honored Contributorlpm functions with no clock
Hi I am very new to fpga so apologise if these are dumb questions but I have searched all over and cant find any help. We are trying to use some lpm functions concatenated together, a mul...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- Does lpmmult_accum work without a clock? --- Quote End --- The MegFunction is essentailly representing a DSP block, it can work without a clock in some applications. To achieve speed to the FPGA limits, it will always refer to registered and pipelined operation. Also the other functions mentioned in the original post are more or less demanding for registered operation if perfomance is an objective. The said data rate of 50 Hz is somehow unusual for FPGA applications. In terms of efficiency, a small 8-bit micro would be an appropriate solution for 50 Sps/s signal processing. If you want a FPGA to perform the calculations, sequential processing, e.g using a serial divider can save maybe 90 % of the fast parallel standard implementation's resource requirements. If you want to implement pure combinational arithmetic, Quartus timing analysis will still tell you the total propagation delay you are asking for.
