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 Special route "Error" in Encounter (error in Reading LEF technology) 

Last post Thu, Jun 7 2012 7:09 PM by QQEDA. 2 replies.
Started by QQEDA 07 Jun 2012 03:14 AM. Topic has 2 replies and 2214 views
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  • Thu, Jun 7 2012 3:14 AM

    • QQEDA
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    • Joined on Thu, Jun 7 2012
    • Posts 4
    • Points 65
    Special route "Error" in Encounter (error in Reading LEF technology) Reply
    Hi all,

    When I trying to do Special route for Pad pins just after the power ring has done, the terminal shows the following err msg:

    Reading LEF technology information...
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 374: cannot add PIN QA[0] to MACRO dp_rf_256x8 at or near "QA[0]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 386: cannot add PIN QA[1] to MACRO dp_rf_256x8 at or near "QA[1]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 398: cannot add PIN QA[2] to MACRO dp_rf_256x8 at or near "QA[2]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 410: cannot add PIN QA[3] to MACRO dp_rf_256x8 at or near "QA[3]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 422: cannot add PIN QA[4] to MACRO dp_rf_256x8 at or near "QA[4]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 434: cannot add PIN QA[5] to MACRO dp_rf_256x8 at or near "QA[5]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 446: cannot add PIN QA[6] to MACRO dp_rf_256x8 at or near "QA[6]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 458: cannot add PIN QA[7] to MACRO dp_rf_256x8 at or near "QA[7]"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 473: cannot add PIN VDD to MACRO dp_rf_256x8 at or near "VDD"
    *ERROR* "data_files/macro/dp_rf_256x8/dp_rf_256x8.vclef", line 488: cannot add PIN VSS to MACRO dp_rf_256x8 at or near "VSS"
    A total of 10 errors.



    I had check the QA pins in netlist, it is connected. I also try to re-generate the memory model again and again, but still fails with the err msg.

    Does anyone know how to fix it?

    please help, thanks ^_^
    • Post Points: 20
  • Thu, Jun 7 2012 8:35 AM

    • wally1
    • Top 50 Contributor
    • Joined on Mon, Aug 4 2008
    • Bellevue, WA
    • Posts 151
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    Re: Special route "Error" in Encounter (error in Reading LEF technology) Reply

    This typically occurs when you've read in a LEF already that has MACRO dp_rf_256x8 defined. The cell can only be defined in multiple LEFs if one LEF contains the logical/physical info and the other LEF contains the process antenna info. When reading in the LEF files you must specify the antenna LEF file after the LEF containing the logical/physical info. Here is the order the LEFs should be listed so they are read in the proper order:

    1. Technology LEF

    2. LEF containing logical and physical information for the cells

    3. LEF containing process antenna rules and information.

    Hope this helps,

    Brian

    • Post Points: 20
  • Thu, Jun 7 2012 7:09 PM

    • QQEDA
    • Not Ranked
    • Joined on Thu, Jun 7 2012
    • Posts 4
    • Points 65
    Re: Special route "Error" in Encounter (error in Reading LEF technology) Reply

    Dear  Brian(wally1) , thank you!!

     

    It's really work, I switch the order of those lef file like you said, and I can do the special route now, the msg has gone, yes!

     

    You just save my weekend. ^_^ ~~ yes!!  

    • Post Points: 5
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Started by QQEDA at 07 Jun 2012 03:14 AM. Topic has 2 replies.