RE: [SI-LIST] : simple ?? newbie issue

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From: Lai, Ricky (Eng Hou) (Ricky.Lai@compaq.com)
Date: Mon Aug 28 2000 - 07:27:57 PDT


I have run Hspice 99.2 with IBIS models. Although Hspice 99.2 does not
fully support IBIS, but I have not seen what you described.

Your connector model looks very simple, so I don't think it will mess up
your signals.

You may want to verify your IBIS model first by connecting the driver to the
receiver thru a straight 6" T-line. Also check if the buffer model requires
pull-up instead of series termination.

You may also double check the IBIS model in other IBIS simulators, like
Interconnectix or Hyperlynx.

Rgds,
Ricky Lai
Compaq Computer

-----Original Message-----
From: Ken Egan [mailto:kegan@interactivesi.com]
Sent: Saturday, August 26, 2000 2:32 PM
To: silist
Subject: [SI-LIST] : simple ?? newbie issue

I'm relatively new to si, but not HSpice. I'm rather confused on how to
accurately simulate
a simple signal.

I've got an IBIS model for the driver/reciever pair.

network looks like this....

    |\ |\
    | \ 1" 4" 1" | \
    | /------- TL--------R--L-------TL_-------R--L--------TL---------| /
    |/ (R) | | | | |/
                       C C C C
                       | | | | <----- this mess is a
connector model
                       GND GND GND GND

   No matter the series termination, this resultant signal looks like sh***.
( no the rs is not shown above ).

   Basically, I'm trying out the circuit shown in Intel's Low-Power Module
Memory Bus Simulation Methodology.

   Thanks,
   Ken

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