The IOBUFDS_DIFF_OUT_DCIEN primitive shown in the following figure is available in the HP I/O banks. It has complementary differential outputs, an IBUFDISABLE port, and a DCITERMDISABLE port that can be used to manually disable the optional DCI on-die receiver termination features (uncalibrated or DCI). See DCI in the HP I/O and XP5IO I/O Banks and Uncalibrated Input Termination in HP and HD I/O Banks for more details. TM and TS must be connected to the same input from the interconnect logic for this primitive to have the expected behavior that is specific to the UltraScale architecture.
If the I/O is using any on-die receiver termination features (uncalibrated or DCI), this primitive disables the termination legs whenever the DCITERMDISABLE signal is asserted High and the output buffer is 3-stated. When the output buffer is 3-stated (T = High), any on-die receiver termination (uncalibrated or DCI) is controlled by DCITERMDISABLE. When the output buffer is not 3-stated (T = Low), the input buffer and on-die receiver termination (uncalibrated or DCI) are disabled and the O output (to the internal logic) is forced to a logic-Low.