Virtualizing serial bus information point by address mapping via

Details Virtualizing serial bus information point by address mapping via Virtualizing serial bus information point by address mapping via

1998-08-04

2000-09-12

Etienne, Ario

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710 62, 710 63, 710 71, 710126, 710130, G06F 1300, G06F 1340

Patent

active

061191957

ABSTRACT:
The present invention is a method and apparatus for virtualizing a serial bus information source/sink point of a serial bus device into an address space of a processor. A register unit is coupled to a parallel port device to support a serial bus transaction between the processor and the serial bus device. The register unit has a plurality of registers which are mapped into the address space of the processor via the parallel port device. One of the plurality of registers corresponding to the serial bus information source/sink point. A control circuit is coupled to the register unit to allow the processor to access the information source/sink point via the parallel port device.

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patent: 5978870 (1999-11-01), Warren
"Interface Chip Supplies Universal Serial Bus to Parallel-Port Conversion", Article from "Electronic Design", Feb. 1997.
"Chip bridges USB to parallel port", Article from "EDN Leading Edge", Feb. 1997.

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