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本帖最后由 ttxs2009 于 2014-8-29 02:09 编辑
以前用Design Compiler来综合ASIC design的时候,直接就把area给报告出来就行了。
现在小弟我刚刚接触FPGA,对于资源占用,应该看哪一项/哪几项呢?
比如,我要说 “我对设计进行了改进,速度提上去了,但是资源占用变成了原来的2倍”,我应该强调哪些参数比较合理?
下面是我的综合报告:
#############################################################################
Device utilization summary:
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Selected Device : 6vlx240tff1156-1
Slice Logic Utilization:
Number of Slice Registers: 13780 out of 301440 4%
Number of Slice LUTs: 21813 out of 150720 14%
Number used as Logic: 21813 out of 150720 14%
Slice Logic Distribution:
Number of LUT Flip Flop pairs used: 21952
Number with an unused Flip Flop: 8172 out of 21952 37%
Number with an unused LUT: 139 out of 21952 0%
Number of fully used LUT-FF pairs: 13641 out of 21952 62%
Number of unique control sets: 40
IO Utilization:
Number of IOs: 5
Number of bonded IOBs: 5 out of 600 0%
Specific Feature Utilization:
Number of Block RAM/FIFO: 1 out of 416 0%
Number using Block RAM only: 1
Number of BUFG/BUFGCTRLs: 2 out of 32 6%
Number of DSP48E1s: 14 out of 768 1%
Total memory usage is 548168 kilobytes |
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