06-24-2011 09:05 AM
Hi guys,I have a big problem when I use the DCFIFO mega function. I need to store large amounts of data to achieve the data delay function. When I use the small FIFO（deep 1024),it works well. However when I increase the deeps of FIFO, it goes bad(deep 32768).（Writing and reading are not the same ） What happened ? I am confused! Is there anyone who meets the similar prolem? I'm looking forward to your suggestions！ Sincere thanks！
06-24-2011 09:21 AM
Thank you for your reply!yes, I turn on the show-ahead mode and my FIFO wide is 14bits. Did you set up any Timing Constraints for the FIFO when it gets big?