Mentor v8.6_4 manual Delete Faults

Command Dictionary Delete Faults

Delete Faults

Tools Supported: FastScan and FlexTest

Scope: Atpg, Fault, and Good modes

Prerequisites: You must add faults with the Add Faults or Load Faults commands before you can delete them.

Usage

For FastScan

Path Delay Faults Usage:

DELete FAults {object_pathname... -All} [-Untestable] [-Both -Rise -Fall]

Stuck/Toggle/Iddq Faults Usage:

DELete FAults {object_pathname... -All} [-Stuck_at {01 0 1}] [-Untestable]

For FlexTest

DELete FAults {object_pathname... -Untestable -All} [-Stuck_at {01 0 1}]

Description

Removes faults from the current fault list.

The Delete Faults command deletes faults from the fault list added using the Add Faults command or the Load Faults command.

You can optionally specify faults with a specific stuck-at value. If you do not specify a stuck-at value when deleting a fault, the command deletes both the “stuck-at-0” and “stuck-at-1” faults from the fault list.

When you issue this command, the tool discards all patterns in the current test pattern. To save the current test patterns you must explicitly save them with the Save Patterns command prior to issuing the Delete Faults command.

In addition to specifying faults with a specific stuck-at value, FastScan lets you specify faults that are untestable. Untestable faults are common when using Built- In Self-Test (BIST) techniques or random patterns. This includes faults which the tool cannot detect due to either constraints or the use of a single capture clock. This also includes faults on circuitry which do not have a scan propagable path to

FastScan and FlexTest Reference Manual, V8.6_4 2-171