2.7 Clock Macros

Clock macros provided in the Libero SoC macro catalog are used to assign signals to the global buffers and row global buffers.

Table 2-1. Clock Macros

Macro Name	Description	Functional Symbol
CLKINT	Routes clock signal from the fabric routing or regular I/O to the global clock network.
CLKINT_PRESERVE	Similar to CLKINT, but the signals routed through the CLKINT_PRESERVE macro will never be demoted or optimized by the Libero Compile tool.
GCLKINT	Gated version of CLKINT with an enable signal (EN) from the FPGA fabric to gate the clock.
RCLKINT	Routes clock signal from global buffers, regional clock buffers, or fabric routing to RGBs.
RGCLKINT	Gated version of RCLKINT with an enable signal (EN) from the FPGA fabric to gate the clock.
CLKBUF	Drives a global buffer from a preferred clock input pad.