The easy solution is to comment out the VT tables you do not want to use. The second easiest solution is to understand the simulator you are using. Some SI simulators will only look at the first 4 VT tables, so reordering the tables will solve the problem. Other simulators will try to use all the data so either use all or comment out what you don't want to use. 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@server.eda.org [mailto:owner-ibis-users@server.eda.org]On Behalf Of seshadri.kirankumar@wipro.com Sent: Wednesday, May 03, 2006 6:47 AM To: ibis-users@server.eda.org; ibis@server.eda.org Subject: [IBIS-Users] Question regarding V-T data of IBIS model Hi Experts, I have a doubt on IBIS modeling regarding to V-T data using a Signal Integrity tool. Suppose if IBIS model contains V-T data generated for different R_fixtures . how SI engineer is able to make the tool to use required R_fixture data from all V-T tables? As an example if I am generating V-T data(2 Risings and 2 Fallings) against 2 Rloads i.e RLOAD1 and RLOAD2 both are less than 100 Ohms, then s2ibis3 will put V-T will be in the below following order based on assumption RLOAD1 > RLOAD2 Rising connected VSS using RLOAD1 Rising connected VDDS using RLOAD1 Rising connected VSS using RLOAD2 Rising connected VDSS using RLOAD2 Falling connected VSS using RLOAD1 Falling connected VDDS using RLOAD1 Falling connected VSS using RLOAD2 Falling connected VDSS using RLOAD2 So how a person using SI tool will chose the required V-T table data based on RLOAD1 and RLOAD2 ? or will these be taken care automatically by the tool? Thanks for providing information on this Best Regards Kiran Kumar The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com |------------------------------------------------------------------ |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 Wed May 3 09:31:30 2006
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