UltraScale Architecture SelectIO Resources User Guide (UG571)

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1.14 English

The IBUFDS_DIFF_OUT_INTERMDISABLE primitive shown in This Figure is available in the HR I/O banks. It has complementary differential outputs and an INTERMDISABLE port that can be used to manually disable the optional on-die receiver termination features (uncalibrated). See Uncalibrated Input Termination in I/O Banks for more details.


TIP:   The IBUFDISABLE feature is not supported with this primitive in the UltraScale architecture.

Figure 1-25:      Differential Input Buffer with Complementary Outputs, Input Path Disable, and On-Die Input Termination Disable (IBUFDS_DIFF_OUT_INTERMDISABLE)

X-Ref Target - Figure 1-25


If the I/O is using any on-die receiver termination features (uncalibrated), this primitive disables the termination legs whenever the INTERMDISABLE signal is asserted High.