When I try to map a design with a single-ended BREFCLK, I receive the following error:
ERROR:LIT - BREFCLK2 of GT symbol "MY_MGT_INST" is chosen and must be driven by differential input buffer. The current driver of this pin is pin O of IBUF symbol "BREFCLK_IBUF" [output signal=brefclk).
Is this due to a software limitation or lack of silicon support?
The silicon will not support a single-ended BREFCLK. A differential input must be used for this signal.