+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Newbie level 3
    Points: 28, Level: 1

    Join Date
    Nov 2012
    Posts
    4
    Helped
    0 / 0
    Points
    28
    Level
    1

    what design corners should be checked

    In analyzing the speed performance of a synchronous circuit, what design corners should be checked based on the factors listed to ensure the design will operate within a specified range of operating conditions.

    •   Alt1st December 2012, 03:21

      advertising

        
       

  2. #2
    Member level 1
    Points: 767, Level: 6
    hoanglongroyal's Avatar
    Join Date
    Nov 2012
    Posts
    36
    Helped
    20 / 20
    Points
    767
    Level
    6

    Re: what design corners should be checked

    normally, without OCV. we need to check setup with wcl-worst_case_low or wcz-worst_case_zero and with hold, we check bc-best_case or ml-max_leakage.
    ofcourse,when signoff, we need OCV check with many corner included.
    for synthesis, we just be careful with setup check (hold check will done at PnR)



    •   Alt1st December 2012, 09:52

      advertising

        
       

  3. #3
    Advanced Member level 4
    Points: 8,890, Level: 22
    Achievements:
    7 years registered

    Join Date
    May 2010
    Location
    Marin
    Posts
    1,485
    Helped
    353 / 353
    Points
    8,890
    Level
    22

    Re: what design corners should be checked

    1- synthesis should be done with the worst corner(s) to reach the setup constraints.
    2- place & route, I usefully have in MMMC flow, how many setup condition, where I want to be sure my design must reach the setup constraints, and for the hold condition, all corners I want to have my design to be functional. I mean, some corners do not have a specific setup condition, but I want to be sure the chip works properly.
    3- STA, I checks setup & hold, in all corners used before with the three RC extractions.



--[[ ]]--