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 SPECCTRA: matched length THROUGH series resistors 

Last post Tue, Jul 5 2005 7:41 AM by archive. 1 replies.
Started by archive 05 Jul 2005 07:41 AM. Topic has 1 replies and 683 views
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  • Tue, Jul 5 2005 7:41 AM

    • archive
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    SPECCTRA: matched length THROUGH series resistors Reply

    I need to match lengths for signals from the microprocessor to the SDDRAM chips. Unfortunately, some signals go through series resistors.

    I have 3 senarios:
    ==================
    1) Micro -------------------------> SDRAM
    2) Micro --> resistor ------------> SDRAM

    I know how to set up a class for senario #1, and to match the routing length. How do you set up Specctra to match senario #2 to #1, i.e. the total length from the micro to the SDRAM is equal regardless if it goes through a resistor or not?

    Any help or tips are welcome!

    thanks in advance, claudio


    Originally posted in cdnusers.org by artaflex
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  • Wed, Aug 3 2005 5:30 AM

    • archive
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    RE: SPECCTRA: matched length THROUGH series resistors Reply

    Hi

    I had not faced like this problem !
    But as per my assumption

    Assign resistor spice model to component. Then define X net length.

    Hope it will work.


    Originally posted in cdnusers.org by naren_thesia
    • Post Points: 0
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Started by archive at 05 Jul 2005 07:41 AM. Topic has 1 replies.