Pattern agnostic on-die scope

An on-die scope is described. The on-die scope can include one or more scope slicers, phase sweeping circuitry, voltage sweeping circuitry, and eye-diagram data collection circuitry. The clock and data recovery circuitry can receive an input signal, and output a recovered clock signal and a recovere...

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Bibliographische Detailangaben
Hauptverfasser: FLYNN JAMES P, LEFFERTS ROBERT B, WEINLADER DANIEL K, YOKOYAMA-MARTIN DAVID A, HUA JUNQI, STONICK JOHN T, STEEVES RICHARD H, WEN JIANPING, WOLFER SKYE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An on-die scope is described. The on-die scope can include one or more scope slicers, phase sweeping circuitry, voltage sweeping circuitry, and eye-diagram data collection circuitry. The clock and data recovery circuitry can receive an input signal, and output a recovered clock signal and a recovered bit-stream. The phase sweeping circuitry can receive the recovered clock signal, and output the scope clock signal by adding a phase offset to the recovered clock signal. A scope slicer can receive the voltage threshold, the scope clock signal, and the input signal, and output a scope bit-stream. The eye-diagram data collection circuitry can detect one or more bit-patterns in the recovered bit-stream, and modify values of one or more scope counters based solely or partly on the scope bit-stream and the recovered bit-stream.