中图分类号： TN402
文献标识码： A
DOI：10.16157/j.issn.0258-7998.209803
中文引用格式： 曾晋伟. 基于Innovus的复杂时钟结构分析及实现[J].电子技术应用，2020，46(8)：64-67.
英文引用格式： Zeng Jinwei. Complicated clock structure analysis and implementation with Innovus implementation system[J]. Application of Electronic Technique，2020，46(8)：64-67.

Complicated clock structure analysis and implementation with Innovus implementation system

Abstract： In advanced process node, as the design scale becomes larger and larger, the clock frequency becomes higher and the clock structure becomes more and more complicated, it is increasingly found that the closure of the design depends more and more on the clock quality. For complicated clock structures such as multi-input dynamic mux, IP modules with multiple internal output clocks, etc., the clock structure is analyzed, and the clock structure is extracted from the netlist based on the Innovus tool, clock spec will be updated based on these analysis. At the same time, CTS is performed on an ultra-large 16 nm top design based on the optimized clock spec, combined with the multi-tap clock tree methodology. From the results obtained, it can be found that the run time, clock latency and other aspects have been greatly improved. It can meet the requirements such as the clock length required by the project, and effectively avoid the timing conflict of the block interface.

Key words : Innovus；physical design；clock tree；multi-tap CTS