外部振荡器没有一套要求，因为它完全取决于它们在FPGA中的用途。
------您是否尝试在Google中输入问题？
如果没有，你应该在发布之前。太多结果？
尝试添加网站：www.xilinx.com
以上来自于谷歌翻译
以下为原文
There is no single set of requirements for external oscillators as it entirely depends on what they will be used for in the FPGA.------Have you tried typing your question into Google? If not you should before posting.
Too many results? Try adding site:www.xilinx.com
外部振荡器没有一套要求，因为它完全取决于它们在FPGA中的用途。
------您是否尝试在Google中输入问题？
如果没有，你应该在发布之前。太多结果？
尝试添加网站：www.xilinx.com
以上来自于谷歌翻译
以下为原文
There is no single set of requirements for external oscillators as it entirely depends on what they will be used for in the FPGA.------Have you tried typing your question into Google? If not you should before posting.
Too many results? Try adding site:www.xilinx.com
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