What are all floor Plan Controlling Parameters

• Aspect Ratio
• Utilization
• IO clearance

Aspect Ratio : It is defined as the Ratio of vertical routing resources to the horizontal routing resources is Called as Aspect Ratio

• If Aspect ratio is more than one (AR>1) The block shape is Vertical Rectangle which means height is more than the width
• If Aspect ratio is lesser than one (AR<1) The block shape is Horizontal Rectangle which means width is more than the height
• If aspect ratio is equals to one the block shape is SQUARE 

Utilization :

• Area of the core that is used by placed Standard Cells and Macros expressed in percentage

IO clearence:

• The spacing between the core boundary to die boundary is called as IO clearance