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Hi
Filler cells are used only for continuity of well .
Imagine there are two standard cells with some space left in between them. so there is a discontinuity in the NWELL (for a NWELL bulk process) in this empty space, which affects your lithography step. In order avoid this, designer...
Hi,
When i am invoking the redhawk in the static mode .i am getting the error in the pgarc of the std cells. only one lib that toooo. like(but in that lib i saw VDD and VSS arc are prasent)
ERROR(SLB-091): PGArcs derived from upf lib of cell "AND*****" is not complete.
ERROR(SLB-091): PGArcs...
Hi Fnd,
uncertainty will have 2 diff quintettes
1) Before cts treated as : Jitter+ Skew
2)After cts treated as : Jitter
Def Jitter:variation of edge in the clock from source point,ex: period 2,clock edges 0,2,4,6,8,...etc(ideal). In the real world no ideal component so from PLL edge may comes...
Hi fnd,
Cases where the clock is getting divided by two / clock generator circuit tool will balance the skew.In this case CP pin of the flop,tool can be define implicit NON STOP PIN.
Thanking you,
Praveen
Hi Fnd,
while doing the cts exclude pins (ignore pins) tool will implicitly defined. cases like 1) clock is going to D, RESET, ENABLE etc pins of flap 2) output ports 3) combinatorial inputs etc..
these all cases there is no use to balance the skew am i correct??So tool will only...
Hi ,
From my knowledge generated clock wont be consider as new clock domain.Reason behind is each clock source will have its own exception in terms of gitter,latence etc and these will be present in SDC. So generated clock will not consider as new clock domain so what ever exception for...
Hi friend,
Half cycle path scenario like data Launch through +ve edge and Capture through _ve edge fp.
L-clk period 2: +ve edge is occurred 0 2 4 6 8 10
C-clk period 2: -Ve edge is occurred 1 3 5 7 9 11
Setup check: at edge 2 at L-clk : C-clk setup check edge 3
Hold check : at edge 2 at...
Generally TOP metals only will use to power because it have less resistance.What i mean is if you use only top layers it will requires more VIAS means more area , because std cell pins are in metal 1 u have to connect from 1 to 8 (Ex see how much area you are wasting to connect power straps) to...
Hi Fnds,
can you explain how WLM depends on Frequency.The usage of WLM is only for estimation of timing. By increasing the frequency who to get RC values with out using WLM.(If you may consider ZERO WIRE LOAD models also how it will depends on frequency). By increasing the...
Hi Friends,
scenario like this :
one Aggressor and one Victim net(M1) in between coupling capacitance(C).
Setup case:Both are in Opp direction cases delay--Agg is switching from 0 to 1 and Vic is switching from 1 to 0 : total cap = -VDD (0-VDD= -VDD)...
Re: endcap decap well-tap
Hi saikrishna Reddy
Can you elaborate how it will reduce antenna effect.I Know only two methods two reduce antenna effect 1)Reducing the wire length near the gate 2)using the diode
Thanks
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