Dear Supratim, Based on DDR simulations I have carried out using XTK, it is very = helpful (necessary) to obtain the board (i.e. .brd) file of the DIMM together = with stackup information and DIMM's bill of material. The nets which need to be simulated can then be examined for routing and component types. The models for passive components (such as capacitors or termination resistors) can be readily constructed from knowledge of package type and component values. The models for the ICs (such as DDR SDRAMs, = Registers, PLLs,) can be obtained in IBIS format. Knowing the board routing (plus stackup geometry) and the components on = each net, allows extraction/creation of topology, model and other files as required for (hierarchical) DDR simulations. Best Regards, Abe Riazi ServerWorks -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] = On Behalf Of Supratim Sent: Thursday, October 20, 2005 11:22 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] IBIS for DDR2 DIMM Hi All, I want to do SI for my ASIC interface to DDR2 DIMM Module (micron).I = down=20 loaded the IBIS for DIMM but I am looking different IBIS not for DIMM. I have confusion in collecting IBIS models for it. The problem is I am not = sure do I need to collect IBIS for DIMM module alone or for all = components=20 of DIMM module. Any suggestions appreciated. Regards, Supratim =20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu