誰能解釋壹下FPGA中的流水線？

In hardware the function of pipeline is implemented by inserting registers in the combinational logic. Long combinational path tends to cause low maximum frequency. If there is critical path in your design, you can use the pipeline to insert registers in the long combinational path to shorten it. Then the timing performance will be improved.

翻譯壹下，大概意思就是：流水線就是在延時較長的組合邏輯（壹般是多級組合邏輯）中插入寄存器，將較長的組合邏輯拆分為多個較短的組合邏輯，以提高設計的最大時鐘速率。流水線的缺點是會在設計中引入流水線延時，插入壹級寄存器帶來的流水線延時是壹個時鐘周期