Date: Tue May 29 2007 - 03:14:16 PDT
Hello Experts, I am trying to model a buffer whose freq of operation is 1.5Ghz (time period = 666ps). While extracting the V/T curve for the buffer we need to take up a window of not less than 800ps to cover all the three waveforms. The buffer delay in MAX,NOM and MIN CORNERS is 130.31ps, 228.44ps and 424.08ps respectively. Please find the snapshot view of the rising output waveform "TXP" of the buffer in three corners, "SB" is the Input data given to the buffer (the delay values are almost same for the falling stimuli also) Now the problem is that if I extract and dump these values in the IBIS model, the model will certainly fail in the worst and typical cases as the bit time is 333ps (< V/T window size). Although it will give a good match only if MAX corner is considered. Can anybody please suggest, what could be done for this case in order to model the behaviour of the buffer correctly in all three corners ? Regards Shiv Harit Mathur STMICROELECTRONICS PVT LTD INDIA -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -------------------------------------------------------------------- |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
