Cypress Semiconductor Corporation

Greg Verge

David Gordon Wright

Warren S Snyder

Timothy John Williams

Harold Kutz

Bert Sullam

Craig Nemecek

Eric D Blom

Melany Ann Richmond

Robert Walter Metzler, Jr

Jeffrey Erickson

A programmable system includes an input/output (I/O) pin that is configurable into multiple operational states. The programmable system further includes a memory device to store configuration data that, when provided to the I/O pin, causes the I/O pin to reconfigure into one of the operational states. When power is supplied to the system, the memory device is configured to provide the configuration data to the I/O pin prior to a system microcontroller becoming operational responsive to the power.

Configurable reset pin for input/output port

A system and method for bi-directional communication between a system controller and a fan controller: The system operates in two modes and there are two communication paths between the system controller and the fan controller. The first communication path provides a PWM signal the frequency of which indicates the mode in which the system is operating. During the first mode, the duty cycle of the PWM signal on the first signal path indicates the desired fan speed. In the first mode, the second communication path carries a conventional tachometer signal. In the second mode the second communication path operates as a bi-directional communications signal path between said system controller and said fan controller.

Fan control utilizing bi-directional communications

Fan control utilizing bi-directional communication

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Lynnwood, WA, United States of America

Greg Verge