Systems and methods for performing clock gating checks

1. Field of the Invention A gating signal checker system and method are provided to perform clock gating check on a logic cell. In accordance with one aspect of the invention, the system includes logic that determines a clock transition time of a clock input into the logic cell, and logic that deter...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Mielke, David James, Stong, Gayvin E
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:1. Field of the Invention A gating signal checker system and method are provided to perform clock gating check on a logic cell. In accordance with one aspect of the invention, the system includes logic that determines a clock transition time of a clock input into the logic cell, and logic that determines a transition time of at least one gating signal input into the logic cell. Also included in the gating signal checker system is logic that calculates a clock difference time between the clock transition time and the transition time of the at least one gating signal input into the logic cell, and logic that determines that the logic cell fails the clock gating check if the clock difference time is negative. In accordance with another aspect of the invention, a method performs a clock gating check on a logic cell by determining a clock transition time of a clock input into the logic cell, and determining a transition time of at least one gating signal input into the logic cell. Then, the method calculates a clock difference time between the clock transition time and the transition time of the at least one gating signal input into the logic cell, and determines that the logic cell passes the clock gating check if the clock difference time is positive.