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How to find the number of pins of a given macro by using commands

Ashok Nellore

 Hi

In my design i need to find the number of pins of a macro by using commands 

  • I think there might be a dbInstNrTerm command. If not, you could use something like the following (sorry, I'm not at a computer right now): llength [dbGet [dbGetInstByName $inst].terms] Let me know if that doesn't work and I can look it up tomorrow. Btw, that number won't include power pins.

  •  Hey jg thanks u .i got the answer 

    But i need all the macros pin count at a time 

    any command to get the all the macros ?

  • Thanks for the help jg!

    Hi Ashok,

    To get a pointer for all the hard macros in the design:

    encounter 22> dbGet -p2 top.insts.cell.baseClass block                                                                                    
    0x2aaab42e95a0 0x2aaab42ea0e0 0x2aaab435b020 0x2aaab44b6bb0

    To get the number of pins on all of the hard macros in the design:

    encounter 23> llength [dbGet [dbGet -p2 top.insts.cell.baseClass block].instTerms]                                                        
    121

    To get the number of pins for each hard macro in the design:

    encounter 24> foreach inst [dbGet -p2 top.insts.cell.baseClass block] {Puts "[dbGet $inst.name] [llength [dbGet $inst.instTerms]]"}
    DTMF_INST/PLLCLK_INST 7
    DTMF_INST/RAM_128x16_TEST_INST/RAM_128x16_INST 43
    DTMF_INST/ARB_INST/ROM_512x16_0_INST 27
    DTMF_INST/RAM_256x16_TEST_INST/RAM_256x16_INST 44

    To learn more about dbGet, check out these slides on support.cadence.com:

    http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q
    =Training/Digital_IC_Design/dbGet.pdf

    Hope this helps,
    Bob

  • Thanks Bob..its working ..it helped me a a lot

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