OCV, AOCV and POCV : a comparative study | difference among OCV, AOCV and POCV | Process Variations

[@syedzeeshanhussain2680]

one doubt i have what is systematic and random variations

[@TeamVLSI]

Well Zeeshan, It has not been explained here as I have already explained this concept in the previous video of OCV.
Kindly watch the previous video which I have mentioned in the description of this video.
For your convenience, here I am providing the link in which I have explained the systematic and random variation.
ruclips.net/video/XlvHQD8NCOY/видео.html

[@surbhiagrawal6006]

Very less information is available about this issues on youTube. Thanks a lot sir for selecting such topics

[@TeamVLSI]

Thanks and welcome Surbhi.
It's my pleasure that you liked it. Keep connected, Keep supporting.

[@habibakhatunnesaragi6259]

Thank you sir ....it's really great concept.I was waiting for the long time.thankyou for uploading

[@TeamVLSI]

You are most welcome

[@sudhirkambhampati9027]

If possible , try doing a video on Glitch analysis .. something like -- what is within the rail , beyond the rails , best filtering strategies , etc.

[@TeamVLSI]

Thanks for the idea!

[@shivangimittal7482]

is there a video to understand graph based and path based analysis?

[@formohit]

During the last stage of the presentation , its highlighted that both distance and depth based derate are handled through coefficient which is not true , only depth based derate are handled through coefficient but distance based is same as in AOCV.

[@TeamVLSI]

Hi Mohit,
I agree with you. But I am not able to find where I have mentioned this exactly. Could you please send the time stamp where I mentioned this?

[@sreepathidinakar6250]

Hi..
Could you please tell about socv

[@sudhirkambhampati9027]

Hi TeamVLSI ,
I am just trying to understand , how the cell delay calculation will be accurate , if we completely ignore the input tran and output cap and completely rely on the POCV coefficient ..
Ex : if a BUFF2X ( having C value of say 0.1 ) cell is having 10fF in one case and where as it is having 100fF in another case , will the cell delay be same in these 2 cases , because it has single C value?

[@TeamVLSI]

No delay could not be same in both the cases. Actually concept of POCV is not like that. Cell delay will be different as per the delay table of BUFF2X or by the interpolation calculations which will come as per the timing library. POCV will add additional variation in delay over the delay comes from timing library.

[@sudhirkambhampati9027]

@@TeamVLSI As i understand , the regular delay comes from the CCS lookup table , but how much to derate that delay will be determined either by the Sigma Coefficient in case of POCV or The LUT sigma value in case of LVF . Thanks for clarifying..

[@TeamVLSI]

@@sudhirkambhampati9027 Yes right.

[@vamshikrishna5408]

@@sudhirkambhampati9027 from where we do get the coefficient value?

[@abhayengineer3435]

is socv and pocv different or same , can you bring some insight on that as well , or its just two industry standard

[@TeamVLSI]

Same.

[@syedzeeshanhussain2680]

Excellent Video , now i understood what exactly POCV , also difference btw OCV n AOCV

[@TeamVLSI]

Thanks @Zeeshan,
Glad it was helpful!

[@9336611680]

in prime time AOCV flow, 3rd step is to " include coordinates for distance based AOCV " . what about path depth based AOCV ? how it is taken care or included in PT AOCV flow???

[@manasavankadaru1290]

Can you tell me difference between graph based and path based analysis?

[@TeamVLSI]

Good question @Mansasa.
Wait for sometime, you will have a interesting video on the said topic in this place.

[@Anjay17680]

hello sir, i am not getting how if dist is const but depth is increasing we need lower value?

[@TeamVLSI]

Hi dear,
So actually as the logic depth increases, random variation increases but it is not necessary that all the random variation will occur in the same direction and so there is cancellation of random variation occurs and that's why we could take lower derate value.
10:39 Go to this timeline, I tried to explain this concept while talking about OCV falt derate.

[@kvenkatamohanreddy1223]

your just amazing sir u clarified many of m doubts sir thank u so much.......

[@TeamVLSI]

Thanks a lot Venkata for liking the contents. Stay tuned for more such updates.

[@richmondmagallon6948]

hello, thanks for the wonderful video. In AOCV, is the same derate applied to all the cells in clock/data path or the derate is applied differently on the cells depending on how far it is or its depth? Hope you can read this.

[@TeamVLSI]

Thanks Richmond,
It depends on distance and depth.

[@abhayengineer3435]

can you explain LVF and socv as well .

[@karanaggarwal1905]

WhatsApp group seems full
Any link can we get ?

[@TeamVLSI]

Yes we have started a new group and link is here:
chat.whatsapp.com/C6etLHR6oAf6G9bLGDwdOf

[@INDIAN-wx3us]

@@TeamVLSI this group is full kindly provide if any new link available
[e-mail]

[@georgehovhannisyan5003]

please make second part about SOCV

[@TeamVLSI]

Hi George,
Sure, will try.

[@shashankkhope5666]

Why do random variations cancel each other as the depth increases? Related to AOCV

[@User--jm5916]

Sir can you explain CRPR concept

[@TeamVLSI]

Hi Radha,
Sure I will do that soon.

[@habibakhatunnesaragi6259]

Nicely well explained

[@TeamVLSI]

Thank you so much 🙂

[@lakshmimukkera6202]

Whatsapp group is full any other groups to connect

[@TeamVLSI]

Will inform you soon.

[@TeamVLSI]

A new WhatsApp Group has been created for new members only who are not in either of our WhatsApp Group. Please join through the bellow link.
chat.whatsapp.com/HVyyJRmKDXQJFvBs7ko5qf

[@lakshmimukkera6202]

Thnq

[@INDIAN-wx3us]

@@TeamVLSI sir please provide new link [e-mail]

[@arunpandiyananbarasu1455]

thanks upload LVF,SOCV also

[@karanaggarwal1905]

Too much great session

[@TeamVLSI]

Thanks Karan.
Keep watching, keep learning!!!

[@navinbhaskar1412]

Good information. If possible, please make video on various layout effect i.e LDE(layout dependent effect), WPE,DFM.

[@TeamVLSI]

Thanks Navin. We will try to cover the said topic.

[@navinbhaskar1412]

@@TeamVLSI Thank u

[@ramesh355]

Can you please anyone provide me POCV Analysis for INNOVUS/ Tempus

[@seemanagendra5777]

Very nice information sir. But unable to join Whatsapp group , can u please share the valid one ?

[@sanketrahane8623]

WhatsApp group mentioned is full, can we have a telegram group ?. so more people can learn and teach.

[@TeamVLSI]

Thanks, Sanket for your feedback.
Yes, WhatsApp group is full but we have a telegram group also. you can find it with the name of team VLSI
or here is the link.
t.me/teamvlsi

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[@TeamVLSI]

Thank you!

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