Kukai, The impulse response of the channel must be determined before the AMI DLL is called. The AMI file contains the switches that program the Tx or Rx model. The value of these switches determine the analog model of the driver that is required to determine the impulse response of the channel. Walter From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Taranjit Kukal Sent: Thursday, January 13, 2011 2:11 AM To: IBIS-ATM Subject: [ibis-macro] BIRD-124: Dependency tables - question? Hi, The dependency tables would be useful only if we want to keep same AMI-code (dll) and just change the dependency outside of the code using .ami file. However, I do not see this as common use-model - I would assume that all such dependency should be handled inside of c-code (Algorithmic...) and that we should avoid overloading of .ami file such tables. AMI-code should be able to handle such dependency by coding the right values for dependent parameters based on Key parameters in ami file. Please let me know if I am missing a use-case where this cannot be handled inside the dll. rgds ..kukal Taranjit Kukal | Product Engineering Architect P: 91 120 3984000 <http://www.cadence.com/> www.cadence.com