Hello, Akilesh, The interconnect specification (such as TTL or PCI) specifies the I/O characteristics, including Vinh and Vinl. For example, if I remember correctly, TTL specifications are Vinl=0.8V and Vinh=2.0V. If you are not using a standard interconnect, then see my paragraph about PVT simulations. Best regards, Lynne -----Original Message----- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Akhilesh CHANDRA Sent: Thursday, February 02, 2006 7:39 PM To: Lynne D. Green Cc: 'ibis-users'; 'ibis'; Akhilesh CHANDRA Subject: Re: [IBIS-Users] How I can extract two value for vinh and vinl Hello Lynne, I am not able to understand how these values come from interconnect specification. I am also not able to understand what is externel specification. In my view I have a spice netlist and run our simulation to extract VINH and VINL. According to me one design have one VINH and one VINL value at one process, voltage and temp. How I can extract two value of VINH and VINL at one process voltage and temp. Please correct if I am wrong. Regards Akhilesh Lynne D. Green wrote: >Hello, Akilesh, > >These values normally come from the interconnect specification. If >there are no parameters equivalent to Vinh+, Vinh-, Vinl+ & Vinl-, then >these parameters are not used in the IBIS model. > >If you are not following an external specification, then you need to do >a complete PVT (process, voltage, temperature) analysis for Vinh and >Vinl (not just one corner). > >- Lynne > > >"IBIS training when you need it, where you need it." > >Dr. Lynne Green >Green Streak Programs >http://www.greenstreakprograms.com >425-788-0412 >lgreen22@mindspring.com > > >-----Original Message----- >From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On >Behalf Of Akhilesh CHANDRA >Sent: Thursday, February 02, 2006 2:24 AM >To: ibis-users; ibis >Cc: akhilesh chandra >Subject: [IBIS-Users] How I can extract two value for vinh and vinl > > > >Hi, > > I have just one query. According to the IBIS specification we can >support Vinh+, Vinh-, Vinl+ & Vinl-. > > I extract these valuse by applying one pulse at the input and find >out the voltage at which it switch from 0->1 and 1->0. According to me >I have only one value at one process, voltage temp. How I can extract >two value for vinh and vinl for one process, voltage and temp. > >Regards >Akhilesh > >|------------------------------------------------------------------ >|For help or to subscribe/unsubscribe, email majordomo@eda.org with >|just the appropriate command message(s) in the body: >| >| help >| subscribe ibis <optional e-mail address, if different> >| subscribe ibis-users <optional e-mail address, if different> >| unsubscribe ibis <optional e-mail address, if different> >| unsubscribe ibis-users <optional e-mail address, if different> >| >|or email a written request to ibis-request@eda.org. >| >|IBIS reflector archives exist under: >| >| http://www.eda.org/pub/ibis/email_archive/ Recent >| http://www.eda.org/pub/ibis/users_archive/ Recent >| http://www.eda.org/pub/ibis/email/ E-mail since 1993 > > >|------------------------------------------------------------------ >|For help or to subscribe/unsubscribe, email majordomo@eda.org with >|just the appropriate command message(s) in the body: >| >| help >| subscribe ibis <optional e-mail address, if different> >| subscribe ibis-users <optional e-mail address, if different> >| unsubscribe ibis <optional e-mail address, if different> >| unsubscribe ibis-users <optional e-mail address, if different> >| >|or email a written request to ibis-request@eda.org. >| >|IBIS reflector archives exist under: >| >| http://www.eda.org/pub/ibis/email_archive/ Recent >| http://www.eda.org/pub/ibis/users_archive/ Recent >| http://www.eda.org/pub/ibis/email/ E-mail since 1993 > > |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org with just |the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ----------------------------------------------------------------- |For help or to subscribe/unsubscribe, email majordomo@eda.org |with the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993Received on Thu Feb 2 20:50:19 2006
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