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IBIS Models Support in Eldo<br />

Electrical Board Description<br />

Electrical Board Description<br />

A “board level component” is a term describing a printed circuit board (PCB) or substrate which<br />

can contain components or even other boards, and which can connect to another board through a<br />

set of <strong>user</strong> visible pins. The electrical connectivity of such a board level component is referred<br />

to as an Electrical Board Description (EBD). An EBD file (.ebd) describes the connections of a<br />

board level component between the board pins and its components on the board. An .ebd file is<br />

intended to be a stand-alone file, not referenced by or included in any .ibs or .pkg files.<br />

The IBIS EBD describes the connection between the <strong>user</strong> accessible pins of a board level<br />

component and other pins of the board or pins of the ICs mounted on that board. Each pin-tonode<br />

connection is divided into one or more cascaded sections, where each section is described<br />

in terms of its L/R/C per unit length. The Fork and Endfork subparameters allow any path to<br />

branch to multiple nodes, or another pin. A path description is required for each pin whose<br />

signal name is not GND, POWER or NC.<br />

Related Topics<br />

IBIS Electrical Board Description<br />

Supported Keywords and Sub-Parameters<br />

IBIS AMI<br />

Eldo supports the IBIS Algorithmic Model Interface (AMI). IBIS AMI addresses the modeling<br />

of the advanced Serializer-Deserializer (SERDES) devices. For more details about AMI please<br />

refer to the IBIS v5.0 specifications document.<br />

Related Topics<br />

IBIS Algorithmic Model Interface (AMI)<br />

748<br />

Eldo® User's Manual, 15.3

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