IBUFE3

UltraScale Architecture SelectIO Resources User Guide (UG571)

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

The input buffer (IBUFE3) primitive (shown in This Figure) is only supported in HP I/O banks. This UltraScale architecture specific primitive has functions similar to the IBUF_IBUFDISABLE with added controls for offset calibration and VREF tuning, along with input buffer disable (IBUFDISABLE). The offset calibration feature is accessed using the OSC_EN and OSC[3:0] ports. The VREF scan feature is accessed using the HPIO_VREF primitive in conjunction with IBUFE3.

Figure 1-21:      IBUFE3 Primitive—Input Buffer with Offset Calibration and VREF Tuning (HP I/O Banks Only)

X-Ref Target - Figure 1-21

X16080-ibufe3-primitive-input-buffer-w-offset-calib-and-vref-tuning-hp-io-banks-only.jpg