Instance

Common section for discussion of glossary terms. Please create a new topic for each term.
User avatar
Bradford Van Treuren
SJTAG Chair Emeritus
Posts: 152
Joined: Fri Nov 16, 2007 2:06 pm
Location: VT Enterprises Consulting Services, USA

Instance

Post by Bradford Van Treuren »

This post is about the term "Instance" and how that relates to P2654, P1687.1, 1687, and 1149.1-2013. This forum also deals with "Instantiation."

From IEEE 1149.1-2013:
Instance and Instantiation: These terms refer to the hierarchical inclusion of an object within another object. For the normative purpose of this standard, these terms are used in the documentation of Test Data Registers, which may be composed of segments and fields, and of segments that may be composed of other segments and fields. A single field or segment definition is an object that may be used multiple times, and each use is termed an instance of that object. An instantiation is the statement that creates and names an instance of a child object within the definition of the parent object. (Similar terminology is used when discussing “instances” or “instantiations” of components on a board.) See also: hierarchy.
Bradford Van Treuren
Distinguished Member of Technical Staff
VT Enterprises Consulting Services