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20 Threads found on edaboard.com: Hold Equation
Hello All, equation for setup : t(ck-q) + t(combo) < Clock period + clock skew - setup hold : t(ck-q) + t(combo) > clock skew +hold I want to know that how skew will calculated in following situation for setup and hold violation on the basis of above equation. (...)
To Check Setup : The setup multiplier Can be N. The launch will happen at 0th clock cycle and setup capture will happen at Nth clock cycle. To check zero cycle hold check : set_multicycle_path -hold 1 The rule is: hold cycle = (setup argument) -1 - (hold argument) Based on this (...)
Can anyone help me prove why there will not be any hold violations if launch ff is pos-edge and capture ff is neg-edge ? Also, can you help me understand setup scenario also ?
Hi Venkat, Can you elobrate this question little more? As in digital logic timing formulas, Skew time, Cylce time, Setup time, hold time play major role. I'm not sure about Tlaunch and Tlaunchclk. maight be similar terms with different name. BR Shashi
Setup is check at each step from synthesis to sta. hold time after the clock tree.
Setup time equation: Tcq + Tcomb> Tskew + Thold hold time equation: Tcq + Tcombhold violation depends on the clock path delay. Before CTS clock path is taken as ideal. We don't have skew and transition numbers of the clock path. (...)
hi Bhargav, Just wanted to know few things before answering your question.. hold Slack= Data arrival time - data required time and setup slack = data required time - data arrival time... keeping these 2 equation please let me know what exactly you want to ask ???
hello everyone i am working on simulink. i have a system where i sample my signal using sample and hold block from simulink library. Then i have to use a "Matlab Embedded" block from the "User defined" sublibrary. The "Matlab Embedded" block should have the equation of charging a capacitor which charges during thr hold time of the (...)
hello everyone, i am trying to write the equation for charging of a capacitor. Vo = Vin(nT)*(1-exp(-t/30)); for nT< t<(n+1)T. where, the T=hold time for a sample and hold circuit. I have to write this equation in matlab. Can anyone suggest me the code....
Dear EDA Form Members, I was wondering if anyone knew where I could buy/find solutions to Balanis Antenna Theory (Third Editon). I now hold a job with an RF company and many of the things people are asking me questions about I have not used in a long time. therefore I am trying to teach myself out of Balanis Antenna Theory book and I am
Hi All, Can any body tell me What are the possible questions on SET-UP and hold time for interview.
hi every body again and again the SFDR, i am designing sample and hold my target to get high SFDR, but in fact How much SFDR needed for sample and hold circuit 10bit 50 MS/s? i am loking to equation explain the relation between the sampling frequency, No of bits and the SFDR. regards
Can anyone explain me these equations with the help of a diagram bcz slight confusion is there late launch clock delay+late data path delay <=Tclk +early capture cck delay-Tsetup In this equation we are indirectly satisfying the hold not setup......bcz if we make the data late then we will get setup violation no
equation for set up and hold time
Since most standard cell flops have hold time very close to 0 (much smaller than CK->Q time) so unless there is a fair amount of clock skew it is next to impossible to not meet hold time.
There are two type of propagation delay: 1) propagation delay min (sometime we call it contamination delay) 2) propagation delay max In setup time calculation, we apply max propagation delay on other hand we use contamination delay in holdtime expression. Hence the equation should be: Tc-q_max + Tsetup + Tcskew + Tcomb_max <= T (se
The maximum time is governed by the setup time equation and the minimum time is defined by the hold time equation. If you don't know the way to analyse for setup time and hold time analysis let me know. I'll write up that stuff and attach it. Make sure you put it as personal message least I miss this post.
the equations u need: (1) time constant of load (τ) =Rload*Cload=50*5=250 ps (2) for any N-bit resolution converter, the following equation must be hold. 2^N*LSB*exp(-t/τ) < LSB/2 ==> t > τ*(N+1)*ln(2) ==> 1/f > τ*(N+1)*ln(2) (3) in ur case, f=1GHz, τ=250ps, ln(2)~=0.7, ==> N < 4.8 So, in theorem, u will (...)
tpd - propagatinal delay tco - combinational delay to satisfy setup conditions, Tclk >= Tsu + Tco,max + Tcq to satisfy hold conditions, Th > Tcq + Tco,min
1) x^2 + y^2 - 64(x^2)*(y^2) = x^4 + y^4 - 62(x^2)*(y^2) x^2 + y^2 = x^4 + y^4 + 2(x^2)*(y^2) x^2 + y^2 = (x^2 + y^2)^2 now let a:= x^2 + y^2 then: a = a^2 a^2 - a = 0 a(a-1) = 0 => a=0 or a=1 => x^2 + y^2=0 or x^2 + y^2=1 which means the equation doesnt hold for any x,y. 2) √(