A high-packing density module generator for bipolar analog LSIs
A high-packing density module generator for bipolar analog LSIs
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用于双极模拟LSI的高封装密度模块生成器
DOI：
10.1109/iccad.1990.129878
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
M. Kusaoke
中科院分区：
文献类型：
--
作者：
Y. Shiraishi;Mitsuyuki Kimura;Kazuhiko Kobayashi;Tetsuro Hino;Miki Seriuchi;M. Kusaoke
提出了一种双极型模拟大规模集成电路的布局布线算法。在模拟模块的版图设计中，需要采用无网格技术来最小化模块面积，并且几何约束的遵守对于电路性能的优化是必要的。布局算法通过对表示输入电路图中的相对器件位置的约束图进行顶点分组来确定观察几何约束的单元位置。该布线算法基于迷宫式细网格布线器的特点，通过动态生成布线禁止，实现了无网格布线和可变宽度布线。这些算法被应用到模拟模块的设计中。自动设计的模块结构紧凑，满足性能要求。<<ETX>>
Efficient placement and routing algorithms are presented for the modules of a bipolar analog LSI. In the layout of an analog module, a grid-free technique is required to minimize the module area and geometric constraint observance is necessary for the circuit performance optimization. The placement algorithm determines cell positions observing the geometric constraints by vertex-grouping of the constraint graph representing the relative device positions in the input circuit diagram. The routing algorithm, based on the characteristic fine-grid maze router, allows grid-free routing and variable width routings observing the geometric constraints by dynamically generating wiring prohibition. These algorithms are applied to the design of the analog modules. Automatically designed modules are compact and the performance requirements are met.<<ETX>>