Mentor v8.6_4 manual ∙ primaryinputpin, ∙ constraintformat

Command Dictionary Add Pin Constraints

Group 3 Return-one waveform; the pin value may fall to a 0 and then return to a 1. Includes the R1, SR1, and CR1 constraint formats. Group 3 waveforms require you to specify the period, offset, and pulse width.

The “Arguments” subsection that follows describes the constraint formats in more detail.

Arguments

∙primary_input_pin

A required repeatable string that specifies the primary input pins that you want to constrain.

∙constraint_format

An argument that specifies the constant value with which you want to constrain the primary input pins. The constraint format choices are as follows:

NR period offset (FlexTest Only) — A literal and two integer triplet that specifies application of the non-return waveform value to the chosen 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 pins. For FlexTest, if the value of the pins change during the scan operation, FlexTest uses the non-return waveform.

C1 — A literal that specifies application of the constant 1 to the chosen primary input pins. For FlexTest, if the value of the pins change during the scan operation, FlexTest uses the non-return waveform.

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

CX — A literal that specifies application of the constant X (unknown) to the chosen primary input pins.

FastScan Specifics:

FastScan does not use the specified primary_input_pin for control.

FastScan and FlexTest Reference Manual, V8.6_4 2-95