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Max Transition Time

17 Threads found on edaboard.com: Max Transition Time

[moved] How gray coding solve metastabiltiy issues ?

it reduces the error to max 1 LSB It allows consistent transfer of numeric values (e.g. counters) between asynchronous clock domains if the value changes only by an unit at a time.

Place and Route - Slew rate outbound

Hi guys, I am trying to place and route a digital design. During the pre place time analysis, the software (Innovus) issues a warning alerting that the slew rate of the several cells is out of bounds with regard to the value specified in timing lib. The weird thing is that I am specifying a maximum slew rate (max (...)

MAX delay in HSPICE

Hi, I want to measure max delay of a full adder,So I use .measure for compare the max of inputs to outputs Rise and Fall times in group of two, but there is negative value in several rise or fall times! .measure tran delay_ar_C TRIG v(A) val='Supply*0.5' td=5ns cross=1 + TARG (...)

what is the max transition and max capacitance

hi can any one tell me what's are max transition and max capacitance and how we can juge if they are good or not !!! thanks

difference between set_max_transition and set_input_transition

Hello Can anybody please explain the difference between set_max_transition and set_input_transition constraints?

What do you mean equal? transition, is the time needed to the signal to goes to zero to one or one to zero. Load, is the capacitance seems by the output pin of the std cell. Both are used in the liberty to characterize the timing, and the maximum constraint should not be violated, because the timing will be extrapolate, and we don't know if (...)

How to calculate that max transition value for design?

Guys, One question. If you do some new design, how to decide max_transition constraint for synthesis and place&route/STA? Is this something based on experince or there is a right way to decide the maximum allowed value for transition time? Thanks in advance. Hi: As "phoenixpavan" as said, there is (...)

Actually, for each design(EDA), We often set the DRC rules, ie. max_transition max_fanout max_capacitance... You can find "max transition" "max_fanout" ... in a library (.lib synopsys format) If you dont set a "max transition" in (...)

max tran rule criteria

Hi All, On what basis max tran rule is defined? Is it same for all the nets? How is it different and why ? Should we fix all tran violations in the design? Regards Tachyons

hi guys , i have an elementary question about transistor , how can i know the bandwidth of the transistor ? in the data sheet i just found "transition frequency" which didn't have a max value , or it is just the inverse of the "storage delay time" tsd?

Transition time violations

One more reason of fixing max transition violation is that bigger transition will result in bigger DC power consumption

about "Max Transition Time Violation" in Encounter

Depends on the logic you can ignore those violations but some times it matters... For example you have some combo logic between two different blocks and you are assuming that the logic is going to take time less than 1 clk cycle.. but for the worst case it may takes more than that and this reports to max transviolations... this can be (...)

Effects of Max Tran Violations

I am trying to understand what will happen if I do not fix the max tran violations . If my timing i smeeting and I have max transition violations will my design work ? Please comment. Thanks ..

The effect of clock values when inserting clock tree in SE

max skew means the difference between the clock arrive the cloest and furthest register. transition time: decided by the drive capacitance of the cell. Both them can impact the performance of the chip such as the highest working frequency

Max Transition Violation Fix

Hi , I would like to know the causes for the max transition time violation ??? I heard that two reasons may lead to this violation 1) input delay of the pin is very high ( more than ) the set value in libary 2) do the wire length that leads to the delay. I would like to know in each case how (...)

How to connect 2 h-bridges in parallel? L293 h-bridge driver

But if i remove enable, than setup control inputs. Wait for max transition and setup time, and than set enable high?

What max transition value should be set in .18/.13 process?

For a non-linear delay model library, the output transition is a function of input transition and your output load. therefore if you define your input transition time and the output load your design is driving, then, there is no need to change_maximum transition which is already defibed in (...)