15.7.7 Using Local Clock and Quadrant Clock Regions

Use a quadrant clock when you want to drive all instances within one quadrant. Use a local clock when you want to drive instances within the entire chip.

Table 15-6. Local Clock and Quadrant Clock Regions by Family
Families	Create Local Clock Region in ChipPlanner?	Create Local Clock Region using PDC or GCF file?	Create Quadrant Clock Region in ChipPlanner?	Create Quadrant Clock Region using PDC or GCF
IGLOO	No	Yes, PDC file	Yes	Yes, PDC file
Fusion	No	Yes, PDC file	Yes	Yes, PDC file
ProASIC3	No	Yes, PDC file	Yes	Yes, PDC file
ProASIC^PLUS	Yes	Yes, GCF file	No	No
Axcelerator	Yes	Yes, PDC file	No	No

Note: The IGLOO family includes IGLOOe, IGLOO PLUS, and IGLOO devices. The ProASIC3 family includes ProASIC3L, ProASIC3E, and ProASIC3 devices.

For more information about assigning LocalClocks, see the Floorplanning ProASIC/ProASIC ^PLUS Devices for Increased Performance application note.