Dec 14, 2006 #1 rajakash Member level 2 Joined Nov 9, 2006 Messages 53 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,608 critical to estimate frequency setup hold time which one is critical to estimate maximum frequency..............
critical to estimate frequency setup hold time which one is critical to estimate maximum frequency..............
Dec 14, 2006 #2 cfriend Full Member level 1 Joined Oct 31, 2005 Messages 97 Helped 2 Reputation 4 Reaction score 0 Trophy points 1,286 Activity points 1,869 setup time
Dec 14, 2006 #3 R rakesh1234 Member level 5 Joined Dec 12, 2006 Messages 93 Helped 13 Reputation 26 Reaction score 7 Trophy points 1,288 Activity points 1,872 setup time is more important deciding maximum frequency .when we decide frequency we r consider set up time
setup time is more important deciding maximum frequency .when we decide frequency we r consider set up time
Dec 14, 2006 #4 rajakash Member level 2 Joined Nov 9, 2006 Messages 53 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,608 mux thanks friends. .......... do u know in 2:1 mux if select line is 'x' then wat is output.
Dec 14, 2006 #5 salma ali bakr Advanced Member level 3 Joined Jan 27, 2006 Messages 969 Helped 104 Reputation 206 Reaction score 21 Trophy points 1,298 Activity points 7,491 the clock period has be greater than the max critical path time in the circuit
Dec 14, 2006 #6 I Iouri Advanced Member level 2 Joined Aug 17, 2005 Messages 678 Helped 87 Reputation 174 Reaction score 8 Trophy points 1,298 Activity points 4,814 you have to be more specific, are you asking what will happen in the simulation or "real" hardware? Becides theis no X in real hardware...
you have to be more specific, are you asking what will happen in the simulation or "real" hardware? Becides theis no X in real hardware...
Dec 15, 2006 #7 rajakash Member level 2 Joined Nov 9, 2006 Messages 53 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,608 am asking in simulator
Dec 15, 2006 #8 L LLxios Newbie level 4 Joined Nov 29, 2006 Messages 5 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,297 rajakash said: which one is critical to estimate maximum frequency.............. Click to expand... hold time is 0 for modern FF => setup time is to watch
rajakash said: which one is critical to estimate maximum frequency.............. Click to expand... hold time is 0 for modern FF => setup time is to watch
Dec 17, 2006 #9 C caplash_vlsi Member level 2 Joined Nov 1, 2006 Messages 45 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,502 setup time is the limiting factor for max. freq. as for ur second ques. if i/p of mux is 'X' then o/p is also 'x' but if u use casex statement in verilog then this problem will not occur
setup time is the limiting factor for max. freq. as for ur second ques. if i/p of mux is 'X' then o/p is also 'x' but if u use casex statement in verilog then this problem will not occur
Dec 27, 2006 #10 A anmolvlsi13 Member level 1 Joined Dec 26, 2006 Messages 38 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Location INDIA Activity points 1,444 We calculate max. freq by using set up time parameter only. For hold time we chck only whether our circuit works correctly or not.
We calculate max. freq by using set up time parameter only. For hold time we chck only whether our circuit works correctly or not.