Mentor v8.6_4 manual Add Nonscan Handling, ADD NOnscan Handling learnedbehavior elementpathname

Command Dictionary Add Nonscan Handling

Add Nonscan Handling

Tools Supported: FlexTest

Scope: Setup mode

Prerequisites: Your design must have scan in order to be able to add nonscan handling.

Usage

ADD NOnscan Handling learned_behavior element_pathname...

[-Instance -Module]

Description

Overrides behavior classification of non-scan elements that FlexTest learns during the design rules checking process.

When you exit the Setup mode, the design rules checker classifies each non-scan element into a type of learned behavior. FlexTest then uses this information when simulating the operation of the scan chains.

However, due to limitations on modeling and simulation capabilities, FlexTest can sometimes pessimistically classify a non-scan element. If you want to override the behavior classification of a particular non-scan element, you can use the Add Nonscan Handling command.

The Set Nonscan Model command continues to have the same effect on HOLD and INITX for behaviors learned from the design rules checker, or that you set with the Add Nonscan Handling command.

Arguments

∙learned_behavior

A required literal argument that specifies the classification of learned behavior that you want to assign to the named non-scan element. The choices for the learned_behavior argument, from which you can select only one, are:

TIE0 — A literal that specifies for the non-scan element to always be at a low state when FlexTest operates the scan chain.

TIE1 — A literal that specifies for the non-scan element to always be at a high state when FlexTest operates the scan chain.

FastScan and FlexTest Reference Manual, V8.6_4 2-87