Mixed-signal nets with digital wreal and wire ports

From: Graham Helwig <graham.helwig_at_.....>
Date: Tue Feb 17 2009 - 16:30:33 PST
Hello,

I have encountered some problems simulating 'electrical' net connecting 
to both 'logic/wire' and 'logic/wreal' ports. The ACMI algorithm is 
inserting only one connectmodule (either electrical_wire or 
electrical_wreal) and both digital wire/wreal ports are connected to it. 
Simulation failure occurs due to the resulting incompatible wire/wreal 
net connection. Using the split connectrule option makes no difference 
because the same connectmodule is inserted for each digital ports. 
Basically the ACMI algorithm is insensitive the net type of the digital 
port.

Looking at the LRM, I could not see any documentation requiring the 
discipline resolution and ACMI mechanisms to handle the incompatible 
wreal and non-wreal net types separately when resolving a mixed-signal 
net. Should the LRM's discipline resolution and ACMI mechanism be 
updated to be sensitive to incompatible digital net types?

Regards
Graham


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