...set, but its I/O Standard, DIFF_HSTL_I_12, does not support thi...
[DRC PORTPROP-6] I/O standard compatibility with attribute usage: Port clk has property DIFF_TERM_ADV set, but its I/O Standard, DIFF_HSTL_I_12, does not support this property. 该错误提示约束属性中约定了DIFF_TERM_ADV,但是D