SelectIO Interface Primitives

UltraScale Architecture SelectIO Resources User Guide (UG571)

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

The Vivado Design Suite library includes an extensive list of primitives supporting many I/O standards available in the I/O 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 SYSMONE1 or 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_INTERMDISABLE (input buffer with buffer disable and on-die input termination disable controls (HR I/O banks only))

IBUFE3 (input buffer with offset calibration and VREF tuning, along with buffer disable control (HP 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))

IOBUF_INTERMDISABLE (bidirectional buffer with input buffer disable and on-die input termination disable control (HR I/O banks only))

IOBUFE3 (bidirectional buffer with offset calibration and VREF tuning, along with input buffer disable and on-die input termination enable control (HP 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)

IBUFDS_DIFF_OUT_IBUFDISABLE (differential input buffer with complementary outputs and buffer disable)

IBUFDS_DIFF_OUT_INTERMDISABLE (differential input buffer with complementary outputs, input buffer disable and on-die input termination disable control (HR I/O banks only))

IBUFDS_IBUFDISABLE (differential input buffer with buffer disable control)

IBUFDS_INTERMDISABLE (differential input buffer with input buffer disable and on-die input termination disable control (HR I/O banks only))

IBUFDSE3 (differential input buffer with offset calibration along with buffer disable control (HP I/O banks only))

IBUFDS_DPHY (differential input buffer for the MIPI D-PHY. Only supported by the HP I/O banks in the Virtex UltraScale+, Kintex UltraScale+, and Zynq UltraScale+ devices)

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_DIFF_OUT (differential bidirectional buffer with complementary outputs from the input buffer)

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_INTERMDISABLE (bidirectional buffer with on-die input termination disable control and input buffer disable (HR I/O banks only))

IOBUFDS_DIFF_OUT_INTERMDISABLE (bidirectional buffer with complementary outputs from the input buffer with on-die input termination disable control and input buffer disable (HR 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))

OBUFDS (differential output buffer)

OBUFTDS (differential 3-state output buffer)

OBUFDS_DPHY (differential output buffer for the MIPI D-PHY. Only supported by the HP I/O banks in the Virtex UltraScale+, Kintex UltraScale+, and Zynq UltraScale+ devices)

HPIO_VREF (VREF scan feature (HP 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) [Ref 5].