Hi Tom, Thanks for the information. I have tried with a prototype file and it passes the IBISCHK. The problem is that the description does not show any specific example for the multiple fork-end fork statement and I am not sure if the format of the path description is being interpreted correctly. For example if "Node" in the ebd file if used outside the fork statement it will still pass the IBISCHK parser without generating any warning due to floating node. I am trying to confirm if I use multiple fork and endfork statements the data will interpreted correctly by the EDA simulator or if I have to use a different format for example a dummy series section between every fork endfork statements to make it working properly. Best Regards Moshiul Haque Micron Technology Inc. -----Original Message----- From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Tom Dagostino Sent: Friday, December 30, 2005 2:51 PM To: mhaque; ibis-users@eda.org; ibis@eda.org Subject: [IBIS] RE: [IBIS-Users] Fork-Endfork in IBIS EBD Models There is a great example of this in the EBD section of the IBIS specification, its a good read. Also, you can always make a prototype file and pass it by the IBIS Golden Parser. Which is a good idea whenever you create an IBIS file. 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 mhaque@micron.com Sent: Friday, December 30, 2005 1:33 PM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS-Users] Fork-Endfork in IBIS EBD Models Hi All, When creating IBIS EBD model for multi die package, is multiple fork and endfork statement allowed for one main branch? For example if the device has 4 die and from each pad bondwires are connected to one external ball is it okay to describe the path description as below? Note the last fork-endfork statement. Is it necessary that the original path needs to be continued and therefore the path description has to end with a series path? [Path Description] QUAD_DIE_SIGNAL A1 Len=0 R=16.646m L=1.406n C=0.456p / |Substrate R, L and C Fork Len=0 R=10m L=1nH C=1p / |Bondwire r,l,c from pin A1 to U1, pad #21 Endfork Node U1.21 Fork Len=0 R=10m L=1nH C=1p / |Bondwire r,l,c from pin A1 to U2, pad #21 Endfork Node U2.21 Fork |Bondwire r,l,c from pin A1 to U3, pad #21 Len=0 R=10m L=1nH C=1p Endfork Node U3.21 Fork |Bondwire r,l,c from pin A1 to U4 , pad #21 Len=0 R=10m L=1nH C=1p Endfork Node U4.21 Best Regards Moshiul Haque Micron Technology Inc. |------------------------------------------------------------------ |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 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 Jan 2 10:16:26 2006
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