FastScan and FlexTest Reference Manual, V8.6_4
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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.