Re: Differential output buffers

Bill,

For a Diff receiver, once s2ibis2 creates a .spi for one leg of
the Rx input(PAD_N), you have to add the E element for the other leg
of the input(PAD_P)..manually..

This works fine for s2ibis2..

Syed

======================================================================
.<extracted from a input spi file generated by s2ibis2>
.
VOUTS2I PAD_N 0 DC 0
E1 PAD_P 0 POLY(2) VDD 0 PAD_N 0 0 1 -1 <--- Manually added this line
VCLMPS2I VDD1 0 DC 1.5
VGCLMPS2I VSS 0 DC 0
.TEMP 55
.OPTIONS INGOLD=2
.DC VOUTS2I -1.5 1.5 0.1
.PRINT DC I(VOUTS2I)
.END
=======================================================================

> From: "Bill Clifford" <bvc3@prodigy.net>
> To: "Syed Huq" <shuq@cisco.com>, <ibis-users@eda.org>
>
> Syed,
>
> <<snip snip.....>>
> .......
> But for the receiver I don't
> see how it can work, because s2ibis2 only gives one input pulse.
>
> Thanks again for any help you can give me on this. I hope these questions
> aren't too trivial, while I'm familiar with using IBIS models, I'm new to
> actually trying to make my own. I really appreciate the assistance.
>
> Regards,
> Bill Clifford
>

 
Received on Thu Jun 14 15:12:14 2001