Hello Lynne, Thanx for your reply. For VInh and Vinl it's OK. I have problem to extract VINH+, VINH-, VINL+ & VINL- values. How can I extract these values on one PVTSC by simulation. Regards Akhilesh Lynne D. Green wrote: >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 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 1993Received on Mon Feb 20 04:02:36 2006
This archive was generated by hypermail 2.1.8 : Mon Feb 20 2006 - 04:10:14 PST