Home > Community > Forums > Digital Implementation > Placement density

Email

* Required Fields

Recipients email * (separate multiple addresses with commas)

Your name *

Your email *

Message *

Contact Us

* Required Fields
First Name *

Last Name *

Email *

Company / Institution *

Comments: *

 Placement density 

Last post Fri, Sep 28 2012 3:42 AM by manu9. 2 replies.
Started by gops 03 Sep 2012 07:24 PM. Topic has 2 replies and 1106 views
Page 1 of 1 (3 items)
Sort Posts:
  • Mon, Sep 3 2012 7:24 PM

    • gops
    • Top 75 Contributor
    • Joined on Wed, Sep 24 2008
    • Trivandrum, Kerala
    • Posts 118
    • Points 2,505
    Placement density Reply

    What are the implications of placement density?

    How to determine the optimum placement density  for a design? 

    • Post Points: 35
  • Thu, Sep 6 2012 3:37 AM

    Re: Placement density Reply

    Placement density is the utilization of the cells in your design.

    In practical, the equation is the placement density should be less than 70%. so that remaining 30% can be utilized for routing.

    • Post Points: 5
  • Fri, Sep 28 2012 3:42 AM

    • manu9
    • Not Ranked
    • Joined on Tue, Aug 21 2012
    • Hyderabad, Andhra Pradesh
    • Posts 3
    • Points 30
    Re: Placement density Reply

     placement density is the amount of space utilised for placement of standardcell,sparecells,endcaps,tapcells,decaps etc(all kind of cells except fillers) out of total available space.

    Its better to close a design with 85-90% density beyong which tool actually takes huge time to move a cell or add extra repeater during timing optimizations

          We can anticipate the density by choosing the die area 20-35% more than the area which we get as output from synthesis.

     

    Thank you 

    • Post Points: 5
Page 1 of 1 (3 items)
Sort Posts:
Started by gops at 03 Sep 2012 07:24 PM. Topic has 2 replies.