[IBIS-Users] Input model really needed?

The following is posted on behalf of John Phillippe at Frescale Semiconductor. Please send any private replies to john.phillippe@freescale.com only.

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Does anyone know how an IBIS simulator handles an input model? I've got a cmos output buffer that also has an input buffer. The input buffer is identical to the pad being in tristate. So I'm wondering if it is just redundant in this case to include an input model. My thought was that maybe the IBIS tools see the input model, and then allow for some kind of vih/vil measurement to convey logic levels. Are there any reasons that I'm just not seeing?
 

--
John Phillippe
32 Bit Embedded Controller Division, IC Creation
Freescale     -  512-895-1835
Austin, TX    -  john.phillippe@freescale.com
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