Mentor v8.6_4 manual Setup Pin Constraints, ∙ constraintformat

Command Dictionary Setup Pin Constraints

Setup Pin Constraints

Tools Supported: FastScan and FlexTest

Scope: Setup mode

Prerequisites: You must execute the Set Test Cycle command before adding pin constraints.

Usage

SETUp PIn Constraints constraint_format

Description

Changes the default cycle behavior for non-constrained primary inputs.

The Setup Pin Constraints command changes the default cycle behavior for all primary inputs not specified with the Add Pin Constraints command. You must first specify the test cycle width with the Set Test Cycle command.

Arguments

∙constraint_format

A required argument that specifies the new constraint_format default for all primary inputs not specified with the Add Pin Constraints command. The constraint_format argument choices are as follows:

NR period offset — A literal and two integer triplet that specifies application of the non-return waveform value to the primary input pins. The test pattern set you provide determines the actual value FlexTest assigns to the pins.

C0 — A literal that specifies application of the constant 0 to the chosen primary input pin. If the value of the pin changes during the scan operation, the tool uses the non-return waveform.

C1 — A literal that specifies application of the constant 1 to the chosen primary input pins. If the value of the pin changes during the scan operation, the tool uses the non-return waveform.

CZ — A literal that specifies application of the constant Z (high impedance) to the chosen primary input pins. If the value of the pin changes during the scan operation, FlexTest uses the non-return waveform.

FastScan and FlexTest Reference Manual, V8.6_4 2-609