SelectIO IOB Interface Primitives - SelectIO IOB Interface Primitives - UG861

The Vivado Design Suite library includes an extensive list of primitives supporting many I/O standards available in the IOB primitives. These generic primitives can each support most of the available single-ended I/O standards.

• IBUF (input buffer)
• IBUF_ANALOG (input buffer specific to system monitor inputs). The IBUF_ANALOG is used by the Vivado Design Suite tools to route analog signals to the SYSMONE4 primitive. It is not a physical buffer and is purely a software construct that should be viewed as a physical pass through.
• IBUF_IBUFDISABLE (input buffer with buffer disable control)
• IBUF_IBUFDISABLE_XP5 (input buffer with buffer disable control (XP5IO I/O banks only))
• IBUFE3 (input buffer with offset calibration and V_REF tuning, along with buffer disable control (HP I/O banks only))
• IBUFE3_XP5 (input buffer with offset calibration and V_REF tuning, along with buffer disable control (XP5IO I/O banks only))
• IOBUF (bidirectional buffer)
• OBUF (output buffer)
• OBUFT (3-state output buffer)
• IOBUF_DCIEN (bidirectional buffer with input buffer disable and on-die input termination disable control (HP I/O banks only))
• IOBUFE3 (bidirectional buffer with offset calibration and V_REF tuning, along with input buffer disable and on-die input termination enable control (HP I/O banks only))
• IOBUFE3_XP5 (bidirectional buffer with offset calibration and V_REF tuning, along with input buffer disable and on-die input termination enable control (XP5IO I/O banks only))

These generic primitives can each support most of the available differential I/O standards:

• IBUFDS (differential input buffer)
• IBUFDS_DIFF_OUT (differential input buffer with complementary outputs). The IBUFDS_DIFF_OUT primitive can be beneficial to accommodate the need to invert differential pins that might have been inadvertently swapped
• IBUFDS_DIFF_OUT_IBUFDISABLE (differential input buffer with complementary outputs and buffer disable (HP and HD I/O banks only)
• IBUFDS_DIFF_OUT_IBUFDISABLE_XP5 (differential input buffer with complementary outputs and buffer disable (XP5IO I/O banks only))
• IBUFDS_IBUFDISABLE (differential input buffer with buffer disable control)
• IBUFDS_IBUFDISABLE_XP5 (differential input buffer with buffer disable control (XP5IO I/O banks only))
• IBUFDSE3 (differential input buffer with offset calibration along with buffer disable control (HP I/O banks only))
• IBUFDSE3_XP5 (differential input buffer with offset calibration along with buffer disable control (XP5IO I/O banks only))
• IBUFDS_DPHY (Differential input buffer for the MIPI D-PHY. Only supported in HP and XP5IO I/O banks.)
• IOBUFDS (differential bidirectional buffer)
• IOBUFDS_DCIEN (differential bidirectional buffer with on-die input termination disable control and input buffer disable (HP I/O banks only))
• IOBUFDS_DCIEN_XP5 (differential bidirectional buffer with on-die input termination disable control and input buffer disable (XP5IO I/O banks only))
• IOBUFDS_DIFF_OUT (differential bidirectional buffer with complementary outputs from the input buffer)
• IOBUFDS_DIFF_OUT_XP5 (differential bidirectional buffer with complementary outputs from the input buffer (XP5IO I/O banks only))
• IOBUFDS_DIFF_OUT_DCIEN (differential bidirectional buffer with complementary outputs from the input buffer with on-die input termination disable controls and input buffer disable controls (HP I/O banks only))
• IOBUFDS_DIFF_OUT_DCIEN_XP5 (differential bidirectional buffer with complementary outputs from the input buffer with on-die input termination disable controls and input buffer disable controls (XP5IO I/O banks only))
• IOBUFDSE3 (differential bidirectional buffer with offset calibration along with input buffer disable and on-die input termination enable control (HP I/O banks only))
• IOBUFDSE3_XP5 (differential bidirectional buffer with offset calibration along with input buffer disable and on-die input termination enable control (XP5IO I/O banks only))
• OBUFDS (differential output buffer)
• OBUFTDS (differential 3-state output buffer)
• OBUFDS_DPHY (Differential output buffer for the MIPI D-PHY. Only supported in HP and XP5IO I/O banks.)
• HPIO_VREF (V_REF scan feature (HP I/O banks only))
• XP5IO_VREF (V_REF scan feature (XP5IO I/O banks only))

More information including instantiation techniques and available attributes for these and all other design primitives is available in the UltraScale Architecture Libraries Guide (UG974).