本文介绍了集成电路设计中标准单元库的几种关键文件：.lef文件包含工艺实现的层规格信息及标准单元库布局；.tlf文件定义了单元库的时序与功率参数约束；.sdc文件提供了用于满足时序约束的合成约束信息；.conf文件则记录了设计导入的重要设置。
The .lef file contains information about the layer specifications for the technology implemented by the
library (in this case AMI .5). Specs like default sizes, minimum widths, and minimum spacing
dimensions. It also contains information about the layout of the standard cell library, for routing
purposes.
The .tlf file constraints information on the timing and power parameters of the cell library. It is used to
determine delays of I/O ports and interconnects of the final design.
The .sdc file contains information about timing constraints on nets, derived from the synthesis
constraints. It is used to help the routing tool meet timing constraints.
The .conf file contains the import settings for your code, in the event that you want to quickly reload a
design. You can select Load from the import design menu and quickly reload your import settings.
library (in this case AMI .5). Specs like default sizes, minimum widths, and minimum spacing
dimensions. It also contains information about the layout of the standard cell library, for routing
purposes.
The .tlf file constraints information on the timing and power parameters of the cell library. It is used to
determine delays of I/O ports and interconnects of the final design.
The .sdc file contains information about timing constraints on nets, derived from the synthesis
constraints. It is used to help the routing tool meet timing constraints.
The .conf file contains the import settings for your code, in the event that you want to quickly reload a
design. You can select Load from the import design menu and quickly reload your import settings.
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