IBUFDS_IBUFDISABLE

UltraScale Architecture SelectIO Resources User Guide (UG571)

Document ID
UG571
Release Date
2022-08-31
Revision
1.14 English

The IBUFDS_IBUFDISABLE primitive shown in This Figure is a differential input buffer with a disable port that can be used as an additional power saving feature for periods when the input is not used.

Figure 1-26:      Differential Input Buffer with Input Buffer Disable (IBUFDS_IBUFDISABLE)

X-Ref Target - Figure 1-26

X16085-diff-input-buffer-w-input-buffer-disable-ibufds_ibufdisable.jpg

The IBUFDS_IBUFDISABLE primitive can disable the input buffer and force the O output to the internal logic to a logic-Low when the IBUFDISABLE signal is asserted High. The USE_IBUFDISABLE attribute must be set to TRUE, the IBUFDISABLE port must be controlled, and SIM_DEVICE set to ULTRASCALE for this primitive to have the expected behavior that is specific to the UltraScale architecture. This feature can be used to reduce power whenever the I/O is idle.