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Sequencing CNT/DLY Blocks
Sequencing CNT/DLY Blocks
Timing Functions Technique
This technique will work with any GreenPAK.
DLY blocks can be chained together to sequence signals. By chaining the output of one delay block to the input of another a sequential set of delays can be made.
图10顺序上升沿延迟
序列集中的DLY块应设置为延迟in theModesetting within the特性window. Typically, the边缘选择setting should be the same for all sequenced components. Figure 11 shows the effect of the two sequential CNT/DLY blocks set to rising-edge, 8ms delays of the Power-On-Reset (POR) signal.
Figure 11 Sequential Delay Simulation
人们还可以将CNT块连接在一起以进行更长的计数时间。当CNT块链接在一起时，CNT的CLK应由上一计数器的输出驱动。这可以通过选择CNT块和在属性中完成特性窗口，选择钟连接与以前的CNTX / DLYX是源。
Figure 12 Sequential Counters