The schematic was not included in the posting. But looking at the waveforms I’ll take a stab at this issue. What is your termination on the output? Is it a 50 Ohm resistor from each output to Vcc – 2V or is it a 100 Ohm resistor tied between the two outputs? The former should work, the latter will not work if this is a true ECL output. Tom Dagostino Teraspeed Labs 9999 SW Wilshire St. Suite 102 Portland, OR 97225 USA 971-279-5325 Office 971-279-5326 FAX 503-430-1065 Cell tom@teraspeed.com www.teraspeed.com <http://www.teraspeed.com/> Teraspeed Consulting Group LLC 16 Stormy Brook Road Falmouth, ME 04105 401-284-1827 From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Girija V Chougala Sent: Thursday, May 29, 2014 5:25 AM To: ibis-users@eda.org Cc: ibis-info@eda.org Subject: [IBIS-Users] Issue with LVPECL output Hi All, I have tried using 5p49v5901 (versaClock@5 ) IBIS model. I'm trying to observe LVPECL outputs with proper termination. Hyperlynx tool is used for simulation. Snapshot of the schematic and simulation output are attached. The LVPECL output is not at all differential output. VOH , VOL are secondary concern. Could anybody suggest what is wrong here. A quick reply would be highly appreciated. Thanks, Girija This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message. -- This message has been scanned for viruses and dangerous content by <http://www.mailscanner.info/> MailScanner, and is believed to be clean. -- 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 mikelabonte@eda-stds.org |or ibis-request@eda-stds.org | |IBIS reflector archives exist under: | | http://www.eda-stds.org/ibis/email_archive/ Recent | http://www.eda-stds.org/ibis/users_archive/ Recent | http://www.eda-stds.org/ibis/email/ E-mail since 1993Received on Thu May 29 10:19:41 2014
This archive was generated by hypermail 2.1.8 : Thu May 29 2014 - 10:20:32 PDT