Mentor v8.6_4 manual Report Control Data

Report Control Data Command Dictionary

Report Control Data

Tools Supported: FastScan

Scope: Atpg, Fault, and Good modes

Prerequisites: You must use the Analyze Control command prior to this command.

Usage

REPort COntrol Data [filename] [-Replace] [-Po]

Description

Displays information from the last Analyze Control command.

The Report Control Data command displays a summary of the information that FastScan obtains from the preceding Analyze Control command.

When the Analyze Control command fails to detect a 0 or 1 on an output pin for a minimum number of the random patterns (as defined by the control threshold), FastScan identifies the output pin as inadequately controlled. For each inadequately controlled output pin the Analyze Control command searches for the potential source of the pin’s control problem. This it calculates by tracing backward from the pin through its most difficult-to-control input until reaching a gate whose inputs all have a controllability value greater than the threshold.

The Report Control Data command’s summary report lists up to a maximum of 25 source gates, which if made controllable, would affect a maximum number of other gates. The command orders the list of gates by the low-controllability gates and includes the low-controllability pins, the gate values, the minimum threshold value, and the calculated source of the controllability problem.

You can report the controllability of all primary outputs by using the -Po switch.

You can write the summary report to a file by specifying a filename.

You use this command primarily when simulating Built-In Self Test (BIST) circuitry.

2-278 FastScan and FlexTest Reference Manual, V8.6_4