| 专用进位链优化设计 |
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| 引用本文： | 龙飞,刘桥.专用进位链优化设计[J].贵州大学学报(自然科学版),2007,24(4):385-389. |
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| 作者姓名： | 龙飞 刘桥 |
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| 作者单位： | 贵州大学,计算机科学与工程学院,贵州,贵阳,550025 |
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| 基金项目： | 教育部春晖计划科研项目 |
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| 摘 要： | 作者提出了一种适合FPGA高效运算的专用进位链结构。基于应用范围方面的考虑,作者先对典型的行波进位做了一定的改进,目的是增强逻辑模块的功能实现能力和提高运算速度。提出进位链设计的策略,设计一种基于高效加法器像选择进位、超前进位的进位新结构。结果表明这种优化提高了芯片的运算速度,同时比现有的结构要快2倍左右。
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| 关 键 词： | FPGA 超前进位 行波进位结构 反向传输 优化设计 |
| 文章编号： | 1000-5269（2007）04-0385-05 |
| 修稿时间： | 2007-05-07 |
Optimizing Design of Carry Chains |
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| LONG Fei,LIU Qiao.Optimizing Design of Carry Chains[J].Journal of Guizhou University(Natural Science),2007,24(4):385-389. |
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| Authors: | LONG Fei LIU Qiao |
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| Institution: | College of Computer Science and Engineering, Guizhou University, Guiyang 550025, China |
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| Abstract: | Presents a high-performance carry chains for FPGAs.we redesign the standard ripple carry chain to enhance logic functionality.With its regular structure,we also develop entirely new carry structures based on high performed adders such as Carry Select,Carry Lookahead.Overall,these optimizations achieve a speedup in carry performance of 2 times over current architectures. |
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| Keywords: | FPGA Carry lookahead Ripple carry architecture inverse propagate optimizing design |
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