Forum Discussion

Lambert's avatar
Lambert
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Does the arrow in Figure 9 and in Figure 25 about the holdup relationship of Same-Edge Capture Center-Aligned Output contradict each other in AN433?

Hi everyone, I don't know the thing in AN433, I feel it's wrong. Use the same edge to launch and latch data, How could two instructions appear？
BoonT_Intel's avatar
BoonT_Intel
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Yes, Figure 25 better illustrate the setup and hold requirement for the data latching.

Lambert's avatar
Lambert
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Hi BCT_Intel

I am leaning the source synchronization constrains, but I am confused about centric-FPGA method just because that there is no complete diagram to illustrate the relationship about vritual clk, input/output clk and data input/output liking internal reg-to-reg. And I don't know how the quartus II to complete route based on the information. Can you provide me some help about this? I have watch the training class, I can't complete understand this method.

​

Best regards,

Lambert​