12-14-2009 09:24 PM
Hello,Everyone. We know that there are 32 Block RAM Blocks of 18Kbits in spartan 6LX-16.
But I don't understand that why the bram resource is divided to RAMB16BWERs and RAMB8BWERs after Synthesized , in one of my ip .xrpt file , the Specific Feature Utilization: is as follows:
Number of RAMB16BWERs
Number of RAMB8BWERs
And in the total design design summary ,the bram resource is :
Number of Block RAM/FIFO: 24 out of 96 25%
But the total bram is 32, if it is used as two independent 9 Kb ，it is 64 . Why here in the summary it is 96 ?
If The 32 RAMB16BWERs and the 64 RAMB8BWERs are different resource applyed ?
Solved! Go to Solution.
12-18-2009 05:17 PM
The 16/18Kb BRAMs can each be fractured into 2 8/9Kb BRAMs. I suspect they are broken out like this to give you better visibility into their usage.
But you are correct - they should not be totaled - it is an either/or situation not both.
This appears to be a bug in the reporting scheme.