Due to a problem in the Intel® Quartus® Prime Pro Edition Software versions 19.3, 19.2, 19.1 and 18.1, you may see the following error messages when compiling for the Intel Arria® 10 PHYLite IP with a data width setting such as 24. This issue occurs when a x36 PHYLite (which instantiates 4 I/O lanes) has less than 27 I/Os (which requires 3 I/O lanes), and therefore, the "dangling" 4th I/O lane will have no buffer which causes the errors.
*** Fatal Error: Segment Violation: faulting address=0x30, PC=0x7fe2165bd868 : 0x7fe2165bd868: periph_emif!EMIF_GEN6_EMIF_SYSTEM::create_dq_group_cells() + 0x1cc
0xf935: ERR_UNWINDER_BACKTRACE::get_stack_trace(void const**, int, int, void*) + 0x101 (ccl_err)
0x73360: msg_ie_get_call_stack(void*) + 0xfb (ccl_msg)
0x74863: MSG_INTERNAL_ERROR::report_fatal(char const*, void*) + 0x3f (ccl_msg)