Local clock buffer (LCB) with asymmetric inductive peaking

A Local Clock Buffer (LCB), an IC chip including registers, some of which may include master/slave latches, locally clocked by the LCB, e.g., providing a launch clock and a capture clock each with an identified critical edge. The LCB includes asymmetrically inductively peaked series connected logic...

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1. Verfasser: FRANCH ROBERT L
Format: Patent
Sprache:eng
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Zusammenfassung:A Local Clock Buffer (LCB), an IC chip including registers, some of which may include master/slave latches, locally clocked by the LCB, e.g., providing a launch clock and a capture clock each with an identified critical edge. The LCB includes asymmetrically inductively peaked series connected logic gates (e.g., inverters and/or NAND gates), each with an inductor between gate devices and supply (Vdd) or ground. The series connected gates alternate between having the inductor located between gate devices and the supply and located between gate devices and ground, providing asymmetric inductive peaking to maintain the sharpness of the critical edges. Optionally, corresponding logic gates in multiple LCBs may share the same inductor. Asymmetric inductive peaking allows reducing LCB power without degrading performance.