Apparatus, method and signal set for monoline serial interface
AssigneeElectronic Solutions, Inc.
InventorsJohn C. Duté, Laurence A. Boyd, II
Life of this patent
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Abstract
Circuit, apparatus, method, and signal set for sending and controlling bi-directional data flow between a microprocessor (or other device) and a peripheral device having a standard UART-based, SPI-based, or similar interface over a single input/output (I/O) port line, utilizing the differences of the instantaneous source impedance of the I/O port line operating with data in and data out states. Circuit, apparatus, method, and signal set for separating the 1-wire data into standard 2-wire and 3-wire UART-based, SPI-based, or similar interfaces for use with unmodified peripheral devices. The exchange of data on a bit-by-bit or analog basis, with insignificant return delay, allows operation independent of any signaling protocol.
Claims46
A circuit for controlling the direction of data traffic, between a first device and a second device, over only a single I/O line by utilizing the differences of instantaneous source impedance of the controlling I/O line during data out and data in modes.
An interface circuit for controlling the direction of date traffic, between a processor and a memory coupled to said processor, over only a single I/O line by utilizing the differences of instantaneous source impedance of the controlling I/O line during data out and data in transmission modes.
Dependencies are inferred from the claim text.