Method for interfacing two buses

Details Method for interfacing two buses Method for interfacing two buses

1999-02-25

2002-01-22

Etienne, Ario (Department: 2781)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

C710S120000, C710S120000, C710S052000, C710S053000

Reexamination Certificate

active

06341322

ABSTRACT:

The following patent applications and patents, all of which were filed on Oct. 1, 1997 and were commonly owned, are hereby incorporated herein in their entirety by reference thereto:
Patent No./Application
Title
No.
“System Architecture for Remote Access and
6,266,721
Control of Environmental Management”
“Method of Remote Access and Control of
08/942,215
Environmental Management”
“System for Independent Powering of Diagnostic
08/942,410
Processes on a Computer System”
“Method of Independent Powering of Diagnostic
6,134,668
Processes on a Computer System”
“Diagnostic and Managing Distributed Processor
08/942,402
System”
“Method for Managing aDistributed Processor
08/942,448
System”
“System for Mapping Environmental Resources to
6,122,758
Memory for Program Access”
“Method for Mapping Environmental Resources
08/942,214
to Memory for Program Access”
“Hot Add of Devices Software Architecture”
08/942,309
“Method for The Hot Add of Devices”
08/942,306
“Hot Swap of Devices Software Architecture”
6,192,434
“Method for The Hot Swap of Devices”
08/942,457
“Method for the Hot Add of a Network Adapter
5,892,928
on a System Including a Dynamically Loaded
Adapter Driver”
“Method for the Hot Add of a Mass Storage
08/942,069
Adapter on a System Including a Statically
Loaded Adapter Driver”
“Method for the Hot Add of a Network Adapter
08/942,465
on a System Including a Statically Loaded
Adapter Driver”
“Method for the Hot Add of a Mass Storage
08/942,963
Adapter on a System Including a Dynamically
Loaded Adapter Driver”
“Method for the Hot Swap of a Network Adapter
5,899,965
on a System Including a Dynamically Loaded
Adapter Driver”
“Method for the Hot Swap of a Mass Storage
08/942,336
Adapter on a System Including a Statically
Loaded Adapter Driver”
“Method for the Hot Swap of a Network
6,170,028
Adapter on a System Including a Statically
Loaded Adapter Driver”
“Method for the Hot Swap of a Mass Storage
6,173,346
Adapter on a System Including a Dynamically
Loaded Adapter Driver”
“Method of Performing an Extensive Diagnostic
6,035,420
Test in Conjunction with a BIOS Test Routine”
“Apparatus for Performing an Extensive
6,009,541
Diagnostic Test in Conjunction with a BIOS
Test Routine”
“Configuration Management Method for Hot
6,148,355
Adding and Hot Replacing Devices”
“Configuration Management System for Hot
08/942,408
Adding and Hot Replacing Devices”
“Apparatus for Interfacing Buses”
6,182,180
“Method for Interfacing Buses”
5,987,554
“Computer Fan Speed Control Device”
5,990,582
“Computer Fan Speed Control Method”
5,962,933
“System for Powering Up and Powering Down a
6,122,746
Server”
“Method of Powering Up and Powering Down a
6,163,849
Server”
“System for Resetting a Server”
6,065,053
“Method for Resetting a Server”
08/942,405
“System for Displaying a Flight Recorder”
6,138,250
“Method for Displaying a Flight Recorder”
6,073,255
“Synchronous Communication Interface”
08.943,355
“Synchronous Communication Emulation”
6,068,661
“Software System Facilitating the Replacement or
6,134,615
Insertion of Devices in a Computer System”
“Method for Facilitating the Replacement or
6,134,614
Insertion of Devices in a Computer System”
“System Management Graphical User Interfacr”
08.943,357
“Display of System Information”
6,046,742
“Data Management System Supporting Hot Plug
6,105,089
Operations on a Computer”
“Data Management Method Supporting Hot Plug
6,058,445
Operations on a Computer”
“Alert Configuration and Manager”
08/942,005
“Managing Computer System Alerts”
08/943,356
“Computer Fan Speed Control System”
08/940,301
“Computer Fan Speed Control System Method”
08/941,267
“Black Box Recorder for Information System
08/942,381
Events”
“Method of Recording Information System
08/942,164
Events”
“Method for Automatically Reporting a System
08/942,168
Failure in a Server”
“System for Automatically Reporting a System
6,170,067
Failure in a Server”
“Expansion of PCI Bus Loading Capacity”
08/942,404
“Method for Expanding PCI Bus Loading
08/942,223
Capacity”
“System for Displaying System Status”
6,145,098
“Method for Displaying System Status”
6,088,816
“Fault Tolerant Computer System”
6,175,490
“Method for Hot Swapping of Network
08/943,044
Components”
“A Method for Communicating a Software
6,163,853
Generated Pulse Waveform Between Two Servers
in a Network”
“A System for Communicating a Software
08/942,409
Generated Pulse Waveform Between Two Servers
in a Network”
“Method for Clustering Software Applications”
6,134,673
“System for Clustering Software Applications”
08/942,411
“Method for Automatically Configuring a Server
08/942,319
after Hot Add of a Device”
“System for Automatically Configuring a Server
08/942,331
after Hot Add of a Device”
“Method of Automatically Configuring and
6,154,835
Formatting a Computer System and Installing
Software”
“System for Automatically Configuring and
6,138,179
Formatting a Computer System and Installing
Software”
“Determining Slot Numbers in a Computer”
08/942,462
“System for Detecting Errors in a Network”
08/942,169
“Method of Detecting Errors in a Network”
08/940,302
“System for Detecting Network Errors”
6,105,151
“Method of Detecting Network Errors”
08/942,573
PRIORITY CLAIM
The benefit under 35 U.S.C. § 119(e) of the following U.S. provisional application(s) is hereby claimed:
Application
Title
No.
Filing Date
“Remote Access and Control of
60/046,397
May 13,
Environmental Management System”
1997
“Hardware and Software Architecture for
60/047,016
May 13,
Inter-Connecting an Environmental
1997
Management System with a Remote
Interface”
“Self Management Protocol for a Fly-By-
60/046,416
May 13,
Wire Service Processor”
1997
“Hot Plug Software Architecture for Off the
60/046,311
May 13,
Shelf Operating Systems”
1997
“Means for Allowing Two or More Network
60/046,491
May 13,
Interface Controller Cards to Appear as One
1997
Card to an Operating System”
COPYRIGHT RIGHTS
A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to interfaces between communication buses in electronic systems. Additionally, the invention relates to an interface between two buses in a computer system.
2. Description of the Related Technology
In the electronics industry, and more particularly in the computer industry, various bus architectures are used to permit parts of computer systems, multiple processors, and controllers to communicate. However, different bus architectures which are governed by different standards are frequently used within a single overall system. Therefore, there is a continuing need to develop interface methods and systems to permit communication between different buses.
One such bus architecture is the Inter-IC control bus (I
2
C bus). The I
2
C bus is a bi-directional two-wire bus (a serial data line and a serial clock line). Advantages of the I
2
C bus architecture are that it provides flexibility and lowers interconnecting costs by reducing board space and pin count. The I
2
C bus has particular application in video cards for computer systems and electronic components such as television tuners, AM/FM tuners, video decoders, video encoders, television audio decoders and video cross bars).
Another common bus architecture is the Industry Standard Architecture (ISA bus). The ISA bus is commonly used in computer systems to transfer data to and from the central processing unit or units.
There is a need for a method and apparatus for interfacing an I
2
C with an ISA bus. Such an interface would permit a CPU in a computer system to communicate with devices interconnected over an I
2
C bus.
SUMMARY OF THE INVENTION
The invention addresses the above and other needs by providing an interface apparatus and method, which in one embodiment includes a system interface processor coupled to a first bus and includ

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