vivado约束时钟256m

要在Vivado中对时钟进行约束，可以使用set_clock_groups命令。您可以使用以下语法对256MHz时钟进行约束：

set_clock_groups -asynchronous -group [get_clocks -include_generated_clocks clk_256m]

这将创建一个异步时钟组，并将clk_256m添加到该组中。这样可以确保正确处理异步时钟，并提高FPGA设计的稳定性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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