On 28 Abr, 17:28, Riad KACED <riad.ka...@[EMAIL PROTECTED]
> wrote:
> Hi There,
>
> SpectreS is obsolete and is there for compatibility with old stuff
> only, don't use it unless in this case.
> Well, Spectre is a Direct Simulation based whereas SpectreS is Socket
> Simulation based. I think spectre was spectreD at the very first but
> not sure ... (The suffux D stands for direct adn S for Socket, same as
> for Hspice, Eldo). The direct simulation has been introduced by
> Cadence in 4.4.3 release.
>
> There are fundamental differences between them, the best for you is to
> give a look at the following doc in your Cadence stream :
> Virtuoso=AE Analog Design Environment User Guide : $CDSHOME/doc/
> anasimhelp/anasimhelp.pdf
>
> These are bits of comments from this doc :
>
> For the 4.4.3 and later releases, direct simulation is preferred over
> socket simulation.
> Cadences development is focused on direct simulation. Socket
> simulation is given minimal
> development. This means that only a limited number of enhancements are
> made to these
> products, and only im****tant bugs are fixed. Inherited connections,
> for example, is available
> for both spectre and spectreS. Direct simulation is available in the
> 4.4.3 release for spectre,
> and, of course, spectreVerilog.
>
> Note: An im****tant difference between direct and socket simulation is
> that in case of socket
> netlisting (with simulators such as spectreS, hspiceS and cdsSpice),
> AEL keywords and
> constants such as boltzman, charge, degPerRad, epp0, pi, sqrt2, twoPi
> and so on
> are evaluated and passed to the final netlist via Cadence SPICE. In
> case of direct netlisting
> (with simulators such as spectre, hspiceD and UltraSim), these
> keywords are treated as
> design variables and the netlister expects values for these variables
> to be defined during
> netlisting.
>
> Im****tant Benefits of Direct Simulation =3D> Continue reading the
> doc ...
> .....
> Im****tant Use-Model Differences between spectreS and spectre =3D>
> Continue reading the doc again ;-) ...
>
> Hope it helps !
>
> Riad.
Excellent explanation!
Thanks =3D)
|
