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 Need help with SPECCTRA length rules 

Last post Tue, Apr 19 2005 2:38 AM by archive. 0 replies.
Started by archive 19 Apr 2005 02:38 AM. Topic has 0 replies and 394 views
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  • Tue, Apr 19 2005 2:38 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
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    Need help with SPECCTRA length rules Reply

    Hi,

    I need help to implement a few design rules.

    Design Details

    Bus DATA1:
    Net DQ1 (fromto U1.1 to U10.1 to R11.1)
    Net DQ2 (fromto U1.2 to U10.2 to R12.1)

    Bus DATA2:
    Net DQ3 (fromto U2.1 to U20.1 to R21.1)
    Net DQ4 (fromto U2.2 to U20.2 to R22.1)

    Other Nets:
    ST1 (fromto U1.3 to U10.3 to R13.1)
    ST2 (fromto U2.31 to U20.3 to R23.1)

    The rules

    1. The nest must be routed according to the fromtos.
    2. Match net DQ1 & net DQ2, Tol = 1.0 mm
    3. Match net DQ3 & net DQ4, Tol = 1.0 mm
    4. DATA1 to DATA2 Tol = 5.0 mm
    5. Average length of bus DATA1 = Length of net ST1 +/- 0.5 mm
    6. Average length of bus DATA2 = Length of net ST2 +/- 0.5 mm

    Can someone please help me to right the DO file section for these rules?
    Any help will be greatly appreciated.

    Dewald


    Originally posted in cdnusers.org by Dewald
    • Post Points: 0
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Started by archive at 19 Apr 2005 02:38 AM. Topic has 0 replies.