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看sta那个文档时,对于源同步,有如下一些描述:
In source synchronous interfaces, the clock also appears along with the data as an output. In such cases, there is normally a requirement for a timing relationship between the clock and the data. For example, the output data may be required to change only within a specific window around the rising edge of the clock.
为什么output data会在clock rising edge的周围变化啊?
对于普通的情况,往往是要求data在clock的周围保持稳定不变。
求助各位大大,请不吝赐教,谢谢。 |
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