Internal Error: Sub-system: LCHIP, File: /quartus/legality/lchip/lchip_rowclock_router.cpp, Line: 1875 iterm && iterm->is_global()

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.2, you might see this fatal error during the Fitter stage when using a sector-level clock gate to clock divider. For example:

In the file /<path_to_file>/clk_gate_intelclkctrl_xx.v

.enable_type("sector")

Resolution

To work around this problem, change the parameter from "sector" to "root".

.enable_type("root")

 

This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition Software version 22.3.