Subject: RE: net_resolution
From: Ian Wilson (imw@antrim.com)
Date: Mon Feb 26 2001 - 14:53:30 PST
> -----Original Message-----
> From: Jonathan Sanders [mailto:jons@cadence.com]
> Sent: Monday, February 26, 2001 8:19 AM
>
>
> It seems that you are implying that the only time driver receiver segregation
> occurs is if the user provides a rule that uses a bidir connect module. Thus
> the only cases where this can happen are:
>
> 1) A true digital inout port exists on the net
> 2) Coercion is used and the net is declared digital, thus the CM goes across
> the analog port that is inout
My statement was incorrect. Whenever there are both digital drivers and digital
loads on a mixed net, the inserted connect module should be bidrectional (i.e.
have a digital inout port).
>
>
> The additional clarification is that you are now forcing the CM to use a
> inout port
> rather than allowing any CM to support driver-receiver seg.
>
> Is there a reason why analog effects on the digital receivers should be
> limited
> to such conditions? Should not the digital drivers always be influenced by
> analog before the digital drivers are driven?
Agree.
Side note: obviously there need to be both drivers and receivers on a net in order
for there to be anything to segregate.
--ian
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