Mentor v8.6_4 manual Reset Au Faults, Untestable Fault Fault Re-classification

Reset Au Faults Command Dictionary

Reset Au Faults

Tools Supported: FastScan and FlexTest

Scope: Atpg and Fault modes

Usage

RESet AU Faults

Description

Re-classifies the faults in certain untestable categories.

The Reset Au Faults command re-classifies the following untestable faults as shown:

Untestable Fault	Fault Re-classification
Oscillatory untestable (OU)	Oscillatory testable (OT)
Hypertrophic untestable (HU)	Hypertrophic testable (HT)
Possibly detected untestable (PU)	Possibly detected testable (PT)
ATPG untestable (AU)	Uncontrolled (UC)
Un-initialized (UI)	Uncontrolled (UC)

HU, UI, and OU categories are specific to FlexTest only and do not exist in FastScan.

Note

Deterministic fault simulators classify some untestable faults differently depending on the algorithm. You can use the Reset Au Faults command to align those potentially misclassified faults.

When the command changes the fault classification, the tool then has the ability to analyze and further reclassify each previously-untestable fault. Allowing the tool the ability to analyze and reclassify those particular untestable faults increases the tool’s efficiency.

2-394 FastScan and FlexTest Reference Manual, V8.6_4