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中文摘要：
FPGA基本逻辑单元结构对其性能有着巨大的影响．采用实验的方法，基于三种不同的FPGA内基本逻辑单元（BLE）结构，分别对一系列的基准电路进行装箱和布局布线，研究了不同BLE结构对FPGA布局布线性能的影响．研究揭示了不同BLE结构对布局质量，布局、布线延时和面积有较大的影响，BLE_C结构在布局、布线延时和面积上有较好的优化效果．实验结果对FPGA的结构设计以及相应EDA工具的设计具有参考意义．
英文摘要：
FPGA basic logic elements structure has a huge impact on its performance. By experimental method, a series of benchmark circuits to be packed, placed and routed, and study the place and route effects of the different structures based on three different FPGA basic logic elements （BLE） structure. Our research shows that different BLE structures have a large impact on placement cost, place and route＇s delay, and area. BLE_C structure has better optimization results in placement, routing delay and area. The experimental results have some reference value to FPGA architecture designand EDA tools design.
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