RPM_GRID Coordinates VHDL Example - RPM_GRID Coordinates VHDL Example - 2026.1 English

RPM_GRID Coordinates VHDL Example - RPM_GRID Coordinates VHDL Example - 2026.1 English - UG903

Vivado Design Suite User Guide: Using Constraints (UG903)

Document ID

UG903

Release Date

2026-07-01

Version

2026.1 English

The following VHDL example defines RLOC constraints with RPM_GRID coordinates:

Place two shift registers relative to a block RAM.
Connect four stages to the input.
Connect four stages to the output.

attribute RLOC : string; 
attribute RPM_GRID : string;
attribute RLOC of di_reg3 : label is "X25Y0"; 
attribute RLOC of di_reg2 : label is "X27Y0"; 
attribute RLOC of di_reg1: label is "X29Y0"; 
attribute RLOC of di_reg0 : label is "X31Y0"; 
attribute RLOC of ram0 : label is "X34Y0"; 
attribute RLOC of out_reg3 : label is "X37Y0"; 
attribute RLOC of out_reg2 : label is "X39Y0"; 
attribute RLOC of out_reg1 : label is "X41Y0"; 
attribute RLOC of out_reg0 : label is "X43Y0";