virtual clock
时间: 2023-08-09 08:07:56 浏览: 83
虚拟时钟(Virtual Clock)是一种在时序分析中使用的概念,它与实际的时钟信号(real clock)不同。虚拟时钟不会连接到任何端口或引脚上,而是在分析过程中虚拟创建出来的时钟。\[1\]在某些情况下,当需要设置输入输出延迟的参考时钟时,共用一个实际时钟是不可行的,因为给参考时钟添加延迟会对所有相关路径产生影响。因此,需要创建一个虚拟时钟作为参考时钟,并根据路径的实际情况为虚拟时钟添加延迟或进行其他设置。\[2\]而对于实际时钟(real clock),在时钟树合成(CTS)之后,需要将其设置为传播时钟(propagated clock)而不是理想时钟(ideal clock),这样就不能使用set_clock_latency来设置时钟网络延迟。\[3\]
#### 引用[.reference_title]
- *1* [时序分析基本概念介绍<Virtual Clock>](https://blog.csdn.net/Tao_ZT/article/details/102456842)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [虚拟时钟(Virtual Clock)](https://blog.csdn.net/qq_39507748/article/details/114758920)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [关于Virtual clock](https://blog.csdn.net/graymount/article/details/106640854)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
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