Digital Equipment Corporation

Digital Euipment Corporation

William J Bowhill

William C Madden

W Hugh Durdan

Robert Dickson

A method for synchronizing data transfers in a data processing system is presented. The invention includes two separate clocks generated by a slave processor, one of which is used to synchronize outgoing signals from the communicating elements and the second of which is used to synchronize incoming signals to the communicating elements.

Efficient protocol for communicating between asychronous devices

A general purpose sense amplifier, suited for memory and level shifting applications, is provided. The present invention provides a high input impedence for less loading of bit line voltages, wherein operation is relatively insensitive to capacitive mismatches on input bit line pairs. Inherent in the high input impedence design is the built-in isolation between input and output circuitry. The present invention also provides a full rail to rail separation of the output bit line voltages without requiring additional pull-up or pull-down circuitry. The present invention also provides a single strobing input for activating and deactivating the sense amplifier. The present invention also provides minimal circuitry with high speed characteristics and low power dissipation.

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Marlborough, MA, United States of America

William J Bowhill