Siva, In your comments, you imply that you are including the package when extracting the [Model] I-V and transient waveform information for your buffers. I would hope that this is not the case. The IBIS structure assumes that the buffer information is extracted separately from the package. Multiple package model sets, through the [Alternate Package Model] keyword, therefore enable users of the IBIS file for the component to use one set of buffer models with multiple package designs. - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum ________________________________ From: Siva Nageswara Rao Borra [mailto:siva@india.nsc.com] Sent: Thursday, September 07, 2006 01:32 To: Mirmak, Michael Cc: Siva Borra; ibis-users@eda.org; deepti@india.nsc.com Subject: Re: [IBIS-Users] Re: How and where Alternate Package Models of IBIS Version 4.x gets used? Hi Michael, Thank you very much. While obtaining data for Pullup,Pulldown and waveform data, we can consider only one package, the how would be the extra package information is useful to the user? Regards, Siva Borra. Mirmak, Michael wrote: Siva, The alternate package keywords simply enable model authors to reference different package electrical descriptions for components that feature identical buffer designs. For example, a component that is available in both DIP and surface-mount packages could be represented using one IBIS file. This file would contain the buffer information in the appropriate [Model] keywords and include one set of package information under the [Package Model] keyword. Electrical data for any other available package designs could be referenced under the [Alternate Package Model] keyword. - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum -----Original Message----- From: owner-ibis-users@server.eda.org [mailto:owner-ibis-users@server.eda.org] On Behalf Of Siva Nageswara Rao Borra Sent: Tuesday, September 05, 2006 00:20 To: ibis-users@server.eda.org Cc: Siva Nageswara Rao Borra; deepti@india.nsc.com Subject: [IBIS-Users] Re: How and where Alternate Package Models of IBIS Version 4.x gets used? Hi Expert, Can anybody give a clarity on how the additional/alternate package models are helpful and also how they can be supplied? This is regarding the [Alternate Package]/[End Alternate] Package models, available on IBIS version 4.x. Thanks in advance for your support. With best regards, Siva Borra. -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.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 e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993 -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.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 e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993 -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.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 e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993Received on Thu Sep 7 09:06:22 2006
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