IBIS Output File (.ibs) Definition

An industry-standard I/O Buffer Information Specification (IBIS) file format for electronic behavioral specifications (with the extension .ibs) that is generated by the Quartus® Prime software for performing board-level signal integrity verification of Intel devices with other EDA tools. An IBIS Output File contains IBIS models for the specific voltage, inductance, capacitance, and resistance values for the I/O pins in a specific Intel device.

You can direct the Compiler to generate an IBIS Output File after successful compilation by selecting IBIS in the Board-Level Signal Integrity Analysis section of the Board-Level page of the EDA Tool Settings dialog box. The Compiler places the generated IBIS Output File in the /< project directory >/board/ibis directory by default.

The file name of the IBIS Output File is the top-level design entity name with an .ibs extension and conforms to the IBIS version 3.2 standard. You can use the IBIS Output File for board-level simulation in the Mentor Graphics® ICX Pro and HyperLynx, Cadence Allegro PCB SI, and Zuken CADSTAR and CR-5000 Lightning signal integrity verification tools.