Honored ContributorHi all
I am trying to study a report for the setup times of signals. I am not able to understand what the rise and fall indicates with respect to clock and the signal. IF anybody can guide me would be very grateful I have attached the report if my question is not clear
Honored ContributorI believe it's when the data is rising and when it is falling coming into the device. I would recommend using set_input_delay to constrain the ports rather than using the datasheet report, as running report_timing on a constrained path will give a lot more detail.
Honored ContributorThis report was generated after giving the constraint...its top.sta.rpt...but i understood since you mentioned datasheet report...if i wudnt have given the constarint then i wud have got the correct setup and hold times for the given signals..
Is it so or am i still wrongHonored ContributorThe datasheet report is given independent of constraints. Obviously constraints will affect the value, but the datasheet report doesn't give any sort of slack(to determine if it passed or failed, and by how much), and it doesn't give detailed reports. I recommend looking at the report_timing and seeing if it's meeting your constraints and not worrying about the datasheet report. (Or minimally, use the report_timing to get details that should help with the datasheet report)
Honored ContributorYes RYSC I am using the report timing only to get the setup,hold slacks my problem was not regarding the values or wether i am meeting timings or not i was just curious to know about this .sta.rpt file generated by quartus...and thanks for guiding me regarding that...I was just wondering if these details which is the datasheet report might help me in constraining in a better way or any advantage these values might have to know more about timings..
Still thanks... :)
