Vivek These parameters are found in the datasheet. They are the timing test load. When the manufacturer publishes the propagation delays, etc. these delays have to be into a known load. These parameters are the known load. Tom Dagostino Teraspeed(R) Labs 13610 SW Harness Lane Beaverton, OR 97008 503-430-1065 tom@teraspeed.com www.teraspeed.com Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 401-284-1827 -----Original Message----- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On Behalf Of Vivek Kumar Sundriyal Sent: Thursday, October 13, 2005 8:34 PM To: ibis-users@eda.org Subject: [IBIS-Users] VMeas, Rref, Rload parameters Hi all , Some basic questions. Can anyone elaborate more on the Vmeas, Rref and Rload parameter ? The IBIS documentation describes : [Vmeas] : Defines the reference voltage level for board-level timing simulation. [Rref] : Defines the resistive load used when specifying the propagation delay or output switching time. [Rload] : Describes the load resistance to use when performing the simulations for the ramp rate data. But could not get what exactly this means. Any help on this will be appriciated. Thanks , Vivek |------------------------------------------------------------------ |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 Thu Oct 13 21:25:16 2005
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