Hewlett-packard Development Company, L.p.

Ray Woodward

Robert J Blakely

Christian Petersen

Samuel Martin Babb

Kelly Jean Pracht

Jack Lavier

Electronic circuits and methods are provided for use in hot-swappable circuit board applications. Circuitry detects an electrical ground connection and signals operation of a hot-swap controller. Detection of stable operating power causes a hierarchical startup of plural voltage regulators. Sensing stable output power from the last of the voltage regulators triggers the configuration of one or more programmable devices. Circuitry and other resources of a hot-swappable circuit board are protected against electrical transient-related damage by virtue of the present teachings.

Circuitry for hot-swappable circuit boards

A memory architecture includes at least one unbuffered dual inline memory module (DIMM). At least one advanced memory buffer (AMB) provides an interface between the at least one DIMM and a host memory controller.

Buffered memory architecture

A primary memory board is disclosed. The primary memory board comprises a printed circuit board (PCB) having a front side and a back side, a plurality of DIMM surface mount connectors, and at least one component. The plurality of DIMM surface mount connectors are mounted on the front side of the PCB. The at least one component is mounted on the back side of the PCB and is positioned opposite the location of at least one of the plurality of DIMM surface mount connectors mounted on the front side of the PCB.

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Windsor, CO, United States of America

Ray Woodward