ERROR:Pack:1654 - The timing-driven placement phase encountered an error.
原因:时钟输出引脚直接接在I/O上了;
方法:在时钟输出I/O之前,需接上ODDR2原语模块;
ERROR:Pack:1654 - The timing-driven placement phase encountered an error.
原因:时钟输出引脚直接接在I/O上了;
方法:在时钟输出I/O之前,需接上ODDR2原语模块;
转载于:https://www.cnblogs.com/geekite/p/5041668.html