使用report_cdc 分析 CDC 结构问题 (英文版) 学习如何使用命令 report_cdc 分析、调试和修复您设计中的 CDC 问题。命令 report_cdc 仅支持 TCL 命令,用于分析设计和识别在您设计中潜在的 CDC 结构性问题,并标记为安全或未知。 Related Videos 时序分析控制...
FPGA User Guide 之 report_cdc report_cdc 可以报告设计中所有的cdc路径并将其分类(前提是时钟被约束好),我们可以基于该报告来检查设计中是否有不安全的 cdc 路径。 本文主要是总结几个不常见的 CDC 类别。 Combinatorial Logic 图1所示,LUT3是位于两个时钟域之间的组合逻辑。这样的设计一般是不建议的,因为组合...
Non-FD Primitive 如图3所以,在寄存器FDRE 和RAMB 之间是有 CDC 路径的。RAMB 内部没有同步器,所以这个 CDC 路径会被认为是不安全的。 图3 CE-ControlledCDC 如图4所示,clock enable 信号经过两级寄存器已经被同步到 clk_b 时钟域,vivado会认为其是一条安全的cdc path。用户需要自己约束从clk_a到FF3的CDC pat...
CDC ReportTalan, Jamie
了解如何使用命令report_cdc分析、调试和修复设计中的CDC问题。 命令report_cdc是一个仅限TCL的命令,用于分析您的设计并识别设计中潜在的CDC结构问题并将其标记为安全或 声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如...
A new government report adds to evidence that the HPV vaccine, once called dangerous by Health and Human Services Secretary Robert F. Kennedy Jr., is preventing cervical cancer in young women.
A new government report says that rates for precancerous lesions decreased about 80% among younger women who were screened for cervical cancer
Table 11. CDC Viewer Report Controls ControlDescription From Clock: and To Clock: Filters the display according to the clock names you specify. Click From Clock: or To Clock: to search for specific clock names. Legend Defines the status colors. A color coded grid displays the clock transfe...
report_cdc_viewer. Report Clock Domain Crossing Viewer Settings OptionDescription Clocks From Clock and To Clock filter paths in the report to show only the launching or latching clocks you specify. Analysis type Options are Setup, Hold, Recovery, or Removal. The Timing Analyzer reports the ...
The Centers for Disease Control and Prevention (CDC) has released a report on the Foodborne Diseases Active Surveillance Network (FoodNet) results for 1996 through 2012. The findings,publishedin the April 19 issue of theMorbidity and Mortality Weekly Report, indicate that the overall incidence of ...