IBIS Interconnect Modeling Specification
Encyclopedia
The IBIS Interconnect Modeling Specification (ICM) is a behavioral, ASCII
-based file format for distributing passive interconnect modeling information. The format and style of ICM are highly similar to the Input Output Buffer Information Specification
(IBIS), and both specifications are managed by the same organization, the IBIS Open Forum. Interconnects under ICM may be represented through tabular frequency-dependent RLGC matrices
or through S-parameters in separate Touchstone files. ICM models define interconnects as consisting of one or more segments. Segment topologies are described in terms of the arrangements of their nodes relative to pin or port lists. The electrical behaviors for each segment are then defined. Interconnects may be grouped into families with similar characteristics or sharing identical segment definitions.
As of 2006, ICM version 1.1 has been standardized in the US through both the GEIA and ANSI
as ANSI GEIA-STD-0001.
ASCII
The American Standard Code for Information Interchange is a character-encoding scheme based on the ordering of the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that use text...
-based file format for distributing passive interconnect modeling information. The format and style of ICM are highly similar to the Input Output Buffer Information Specification
Input Output Buffer Information Specification
IBIS is a method for integrated circuit vendors to provide information about the input/output buffers of their product to their prospective customers without revealing the intellectual property of their implementation and without requiring proprietary encryption keys...
(IBIS), and both specifications are managed by the same organization, the IBIS Open Forum. Interconnects under ICM may be represented through tabular frequency-dependent RLGC matrices
Matrix (mathematics)
In mathematics, a matrix is a rectangular array of numbers, symbols, or expressions. The individual items in a matrix are called its elements or entries. An example of a matrix with six elements isMatrices of the same size can be added or subtracted element by element...
or through S-parameters in separate Touchstone files. ICM models define interconnects as consisting of one or more segments. Segment topologies are described in terms of the arrangements of their nodes relative to pin or port lists. The electrical behaviors for each segment are then defined. Interconnects may be grouped into families with similar characteristics or sharing identical segment definitions.
As of 2006, ICM version 1.1 has been standardized in the US through both the GEIA and ANSI
Ansi
Ansi is a village in Kaarma Parish, Saare County, on the island of Saaremaa, Estonia....
as ANSI GEIA-STD-0001.