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OLevy1's avatar
OLevy1
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

one of the 'Timing Optimization Advisor' recommendations for my design is to define a list of clocks as Global Clock in the Assignment editor. how do i do that?

i have tried to enter one of the clocks to the 'Assignment Editor' list in the 'To' column, i selected 'Global Signal' in the 'Assignment Name' column, i selected 'Global Clock' in the 'Value' column. compiling the design i get a message "136021 Ignored assignment GLOBAL which contains an invalid node name THE_NAME_OF_THE_CLOCK_FROM_THE_RECOMMENDATIONS_LIST" so i guess i do not configure it right.

13 Replies

  • sstrell's avatar
    sstrell
    Icon for Super Contributor rankSuper Contributor
    6 years ago

    The To column must be the exact name of your clock. Click the little browse button in the To column cell to open up the Node Finder and search for and select the name of your clock to apply the assignment to.

    #iwork4intel

    • OLevy1's avatar
      OLevy1
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago

      thanks for the answers but what i get in the report are names that can not be found by the Node Finder.

      for example (one of the clocks i get in the report):

      'crm_inst|freeclk_pll_inst|pll_inclk50mhz_normal_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[0]'

      i have found 'crm:crm_inst|pll_inclk50MHz_normal:freeclk_pll_inst|outclk_0' in the Node Finder. configured it as 'Global Signal' in the 'Assignment Name' column and 'Global Clock' in the 'Value' column.

      and after the compilation i still get the same line in the report (Node Name - crm_inst|freeclk_pll_inst|pll_inclk50mhz_normal_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[0], Global Resource Used - No)

  • KennyT_altera's avatar
    KennyT_altera
    Icon for Super Contributor rankSuper Contributor
    6 years ago

    usually, if the name was correct after doing the above suggestion. You will find a green tick there in the assignment editor.

    • OLevy1's avatar
      OLevy1
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago

      thanks for the answers but what i get in the report are names that can not be found by the Node Finder.

      for example (one of the clocks i get in the report):

      'crm_inst|freeclk_pll_inst|pll_inclk50mhz_normal_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[0]'

      i have found 'crm:crm_inst|pll_inclk50MHz_normal:freeclk_pll_inst|outclk_0' in the Node Finder. configured it as 'Global Signal' in the 'Assignment Name' column and 'Global Clock' in the 'Value' column.

      and after the compilation i still get the same line in the report (Node Name - crm_inst|freeclk_pll_inst|pll_inclk50mhz_normal_inst|altera_pll_i|general[0].gpll~FRACTIONAL_PLL|vcoph[0], Global Resource Used - No)

  • KennyT_altera's avatar
    KennyT_altera
    Icon for Super Contributor rankSuper Contributor
    6 years ago

    You can always look into your reports files to check on the correct name to look for in your assignment editor. got to processing -> compilation report.

    • OLevy1's avatar
      OLevy1
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago
      Hi, I have checked the ‘Compilation report - > TimeQuest Timing Analyzer -> Clocks’ and the names are the same to what I see in the ‘Timing Optimization Advisor’ recommendations. Do you have any other ideas? Thanks, Oren
  • KennyT_altera's avatar
    KennyT_altera
    Icon for Super Contributor rankSuper Contributor
    6 years ago

    Did you manage to find the name? If no, I will attached a screenshot.

    • OLevy1's avatar
      OLevy1
      Icon for Occasional Contributor rankOccasional Contributor
      6 years ago
      Hi, No I didn’t. Can you please attach the screenshot? Thanks, Oren