Figure 1. Single-Ended Input Buffer Primitives
| Attribute | Values | Description |
|---|---|---|
| IOSTANDARD | See HD IOB Supported Standards | Assigns an I/O standard to the element. |
| USE_IBUFDISABLE | FALSE | IBUFDISABLE is not supported in HD IOB and must be set to FALSE. (IBUF_INTERMDISABLE only) |
| Port | I/O | Description |
|---|---|---|
| O | Output | Buffer output representing the input path to the device. |
| I | Input | Input port connection. Connect directly to top-level port in the design. |
| IBUFDISABLE | Input | The IBUFDISABLE pin can disable the input buffer and force the O output to the internal logic to a logic High when the IBUFDISABLE signal is asserted High. (IBUF_INTERMDISABLE only) |
| INTERMDISABLE | Input | IBUFDISABLE is not supported in HD IOB. (IBUF_INTERMDISABLE only) |