【摘要】 提出了一种应用于芯片物理设计过程中IO单元自动排布的新算法。IO单元排布是芯片物理设计过程中长期依赖经验的环节。IO单元排布的优化对布线,电源网格和设计收敛性的优化有很大贡献。文章重点研究边缘IO单元排布,提出了IO单元自动排布算法(IOAP)。此算法及其相关软件直接应用于视频解码芯片和无线传感器网络处理器芯片(已流片成功)的物理设计流程中。结果表明,IOAP有效改善了芯片的电源网格,时序和布线结果,减少了布线努力,提高了设计收敛性。更多还原

【Abstract】 A novel algorithm for automatic I/O cell placement is presented.Initial I/O placement has a great effect on the final solution.Optimized I/O placement will contribute to routing,power grid and design convergence.This work is focused on peripheral I/O designs that fit most wire bond packages.A novel automatic I/O cell placement algorithm,IOAP(I/O automatic placement),is put forward.Experiments were conducted on a video decoder chip and a wireless network processor chip.Results show that the routing effort,IR drop,timing and total net length are comprehensively optimized.更多还原