Mentor v8.6_4 manual Add Tied Signals, ∙ Z

Command Dictionary Add Tied Signals

Add Tied Signals

Tools Supported: FastScan and FlexTest

Scope: Setup mode

Usage

ADD TIed Signals {0 1 X Z} floating_object_name... [-Pin]

Description

Adds a value to floating signals or pins.

The Add Tied Signals command assigns a specific value to not-clearly-defined floating signals or pins. If there are floating signals or pins in the design, a warning appears when you leave the Setup mode. If you do not assign a specific value, the tool ties the signal or pin values to the default value. You can change the default tied value by using the Setup Tied Signals command.

When you add tied signals or pins, the tool places them into the user class. When the netlist ties signals or pins to a value, the tool places them into the system class.

The tool will not tie a signal that is connected to I/O pins. This causes a problem if you are considering UDD as an I/O pin.

Note

Arguments

∙0

A literal that ties the floating nets or pins to logic 0 (low to ground).

∙1

A literal that ties the floating nets or pins to logic 1 (high to voltage source).

∙X

A literal that ties the floating nets or pins to unknown.

∙Z

A literal that ties the floating nets or pins to high-impedance

FastScan and FlexTest Reference Manual, V8.6_4 2-117