逻辑参数自动提取工具的设计及实现

Tool for automatic logic parameter extraction

为了缩短建立逻辑参数库的时间以及减少逻辑参数提取过程中人为引入的误差，提出了一种逻辑参数自动提取工具的实现方法。该工具利用逻辑约简和一维边沿搜索方法完成单元电路逻辑参数提取的ＳＰＩＣＥ模拟激励波形自动生成和逻辑参数提取，它能根据用户指定的时延要求，自动生成模拟所需的ＳＰＩＣＥ激励波形并自动进行参数提取，最后自动生成单元的逻辑参数数据手册，并且能自动转换成ＳＹＮＯＰＳＹＳ和ＣＡＤＥＮＣＥ逻辑模拟和综合所需要的格式。该工具可应用于单个电路的逻辑参数的提取，也可应用于逻辑参数库的建立。

In order to shorten the development cycle of establishing logic parameter library and to diminish the errors caused by manual extraction, an automatic tool to extract logic parameter is proposed. The logic simplification method and one dimension binary edge search method are used for automatic SPICE waveform generation and logic parameter extraction of circuit cells. The tool can generate waveforms for SPICE input according to user timing specifications, extract the logic parameter and create the data book for library cells automatically. The results can be transferred to SYNOPSYS and CADENCE formats. It can be applied to extract logic parameters for circuit cell and establish logic parameter library.