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How to report list of flops whose clock port is driven by test clock in test mode

diablo

 Hi all,

  I have functional and test analysis views. The Test clock is muxed with functional clock whose selector is TEST_EN net.

  In my functional SDC, I have "set_case_analysis 0 TEST_EN" and in test SDC, I have "set_case_analysis 1 TEST_EN". I want to verify  whether in test analysis view, the Test clock is seen by all the flops. 

  How to report the list of flops whose clock port is driven by test clock in test analysis view.

 Thanks for your time.

  

 

Parents
  • BobD

    I altered my testcase such that no clock gets to the pin in the b view and I see what you're seeing:

    encounter 17> get_property -view a [get_pins i1/CK] clocks
    clka
    0x24
    encounter 18> get_property -view b [get_pins i1/CK] clocks

    0x26

    A modification to the script could catch the cases where the clock pin doesn't receive a clock:

    foreach_in_collection register [all_registers] {
      foreach_in_collection pin [filter_collection [get_pins [get_property $register hierarchical_name]/*] {is_clock == true}] {
        set clocks [get_property -view b $pin clocks]
        if {[sizeof_collection $clocks > 0]} {
          set clk [get_property -view b $clocks clk]
          if {$clk == "clkb"} {
            Puts "Pin: [get_property $pin hierarchical_name] in view \"b\" is driven by \"clkb\""
          }
        } else {
          Puts "Pin: [get_property $pin hierarchical_name] in view \"b\" is not driven by a clock"
        }
      }
    }

    Pin: i1/CK in view "b" is not driven by a clock
    Pin: i2/CK in view "b" is not driven by a clock

    Not sure that's going to pinpoint why the pins aren't receiving a clock.  You might want to check the report_case_analysis command for some insight into what's going on relateive to those constraints.

    -Bob

     

Reply
  • BobD

    I altered my testcase such that no clock gets to the pin in the b view and I see what you're seeing:

    encounter 17> get_property -view a [get_pins i1/CK] clocks
    clka
    0x24
    encounter 18> get_property -view b [get_pins i1/CK] clocks

    0x26

    A modification to the script could catch the cases where the clock pin doesn't receive a clock:

    foreach_in_collection register [all_registers] {
      foreach_in_collection pin [filter_collection [get_pins [get_property $register hierarchical_name]/*] {is_clock == true}] {
        set clocks [get_property -view b $pin clocks]
        if {[sizeof_collection $clocks > 0]} {
          set clk [get_property -view b $clocks clk]
          if {$clk == "clkb"} {
            Puts "Pin: [get_property $pin hierarchical_name] in view \"b\" is driven by \"clkb\""
          }
        } else {
          Puts "Pin: [get_property $pin hierarchical_name] in view \"b\" is not driven by a clock"
        }
      }
    }

    Pin: i1/CK in view "b" is not driven by a clock
    Pin: i2/CK in view "b" is not driven by a clock

    Not sure that's going to pinpoint why the pins aren't receiving a clock.  You might want to check the report_case_analysis command for some insight into what's going on relateive to those constraints.

    -Bob

     

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