Hello IBIS Experts,
I have been looking at the dependency features in the IBIS specification
and have a question about "Usage Dep" parameters. First, here is a quote
from the spec to give some background:
[cid:image001.png@01D168D0.8432C0E0]
[cid:image003.emz@01D16818.62182B70]
From this, we know that certain parameters are directed to the
EDA tool and others to the AMI executable model. But from this:
[cid:image005.png@01D168D0.8432C0E0]
we do not know whether a parameter whose value is assigned by the
new AMI_Resolve function is intended to be used by the EDA tool or
the AMI model. Am I missing something?
For example, in the case of Reserved_Parameters, such as "Tx_Jitter",
one might argue that from the rules spelled out in the specification
we will know that if it is declared as Usage Dep, the value returned
by AMI_Resolve will have to be directed to the EDA tool. But what
if there is a Model_Specific parameter declared as Usage Dep in the
.ami file? How does the EDA tool know whether it should get the value
from the AMI_parameters_out string returned by AMI_Resolve and pass
it to the AMI_Init function through the AMI_parameters_in string, or
just keep it to itself?
Thanks,
Arpad
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