混合模块TC^2CLA优化设计的结构参数约束

Configuration Parameter Constraints of the Optimizing Design of Hybrid-Modules TC^2CLA

在顶层进位级联超前进位加法器(TC2 CLA)基本单元及组合方案优化设计的基础上,将微电子技术工艺水平制约下的门电路最大扇入数Nfanin(max)和扇出数Nfanout(max)经分析、归纳转化为混合模块TC2 CLA全面优化设计的结构参数约束.推导出TC2 CLA结构参数组位数jm,模块层数Mj与Nfanin(max)、Nfanout(max)的约束公式,并列出优化分析表.公式和优化表给出了TC2 CLA结构参数(jm、Mj)在全面优化设计中的约束,为混合模块TC2 CLA及优化序列、无等待时间序列的优化设计及操作位的扩展奠定了基础.

The maximum fanin number and maximum fanout number Nfanin（max） of gate circuit under the constraint of the microelectronic technological lever were translated into configuration parameter constraints based on the optimizing design of basic circuit unit and combination scenario of TC2CLA by means of analytic and induction inculcation.The constraint formula of these bit number of classes jm,maximum hierarchy number of the module Mj of configuration parameter of TC2CLA and Nfanin（max） Nfanout（max） of gating circuit were deducted.The optimizing parsing table were given at the of the paper.The constraints of configuration parameter（jm、Mj） of TC2CLA were given in the formulae and optimizing table,the foundation for the overall optimal design and expanding operand bit of hybrid-modules TC2CLA and its optimizing sequence without writing time sequence was laid.