You can assign a clock to a QuadrantClock region either using the ChipPlanner tool in the MultiView Navigator or using a PDC file.
In ChipPlanner, you can assign a clock to a quadrant clock in one of the following ways:
Assign a clock macro (not hardwired to an I/O) to a QuadrantClock region using the ChipPlanner tool
Assign a clock macro (hardwired to an I/O) to an I/O location using either the PinEditor or I/O Attribute Editor tool, or to an I/O module location that drives a QuadrantClock region using the ChipPlanner tool
Assign a regular net to a QuadrantClock region
Using a PDC file, you can assign a clock to a QuadrantClock in one of the following ways:
Assign a clock macro (not hardwired to an I/O) to a QuadrantClock region using the assign_quadrant_clock command
Assign a clock macro (hardwired to an I/O) to an I/O location (set_io) or to an I/O module location (set_location) that drives a QuadrantClock region
Assign a net driven by
a regular net or a clock net to a specific QuadrantClock region using
the following command:
assign_quadrant_clock -net <net name> -quadrant <QuadranClock
region>
where
<net name> is the name of the net assigned to the QuadrantClock
region
<QuadrantClock region> is the QuadrantClock region to
which the net should be assigned. QuadrantClock regions are defined as
UL (upper left), UR (upper right), LL (lower left), and LR (lower right)
Example: assign_quadrant_clock -net
FRAMEN_in -quadrant
UL
Note: If the net assigned to the QuadrantClock is a regular net, Designer inserts a QCLKINT on the net.