Macro Placement Guide lines

Macro Placement Guidelines

• Fly-line Analysis (For Connectivity information)
• Macro keep-out (For Uniform Standard Cell Region)
• Channel Calculation (Critical for Congestion and Timing)
• Avoid the odd-shaped area for Standard Cells
• Funnel-shaped Macro Placements are preferred
• Fix the Macro locations, so that tool won't alter during Optimization
• Place macros around the chip periphery, so that core area will be clustered
• Consider connections to fixed cells when placing Macros
• In Advanced Technology Nodes Macro Orientation is fixed since the Poly Orientation can’t vary, so there will be restrictions in Macro Orientation
• Reserve enough room around Macros for IO Routing
• Reduce open fields as much as possible
• Provide necessary Blockages around the Macro