Serial bus system for shadowing registers
May 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInput/output data port with a parallel and serial interface Add-in board with enable-disable expansion ROM for PCI bus computers System management shadow port Bridge between two buses of a computer system with a direct memory access controller with accessible registers to support power management Method and apparatus for packing digital data Method and structure for data transfer between a standard port of a host computer and a custom port of a palmtop computer using a docking station Patent #: 5666495 InventorsAssigneeApplicationNo. 073135 filed on 05/05/1998US Classes:710/304Hot dockingExaminersPrimary: Sheikh, Ayaz R.Assistant: Wiley, David Attorney, Agent or FirmInternational ClassG06F 013/00AbstractThe present invention relates to a low latency serial bus system for shadowing registers between first and second digital devices. Either the first device or the second device may initiate a data transfer cycle on the serial bus when data in a shadowed register of that device has changed. The data transfer cycle includes a first frame where data is transferred from the first device to the second device and a second frame where data is transferred from the second device to the first device. The devices do not initiate a subsequent data transfer cycle for changed data if the changed data can be transferred in the current data transfer cycle.Other References
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