Method and system for a physical bus selector
First Claim
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1. An electronic application card performing communication functions, the application card comprising:
- a plurality of physical communication buses accessing the application card, wherein the physical communication buses have mutually exclusive access to the application card;
a physical interface switch interfaced to the plurality of communication buses, the physical interface switch monitoring the plurality of physical buses and selecting between a plurality of physical buses accessing the application card; and
a criterion to determine the appropriate physical bus to allow mutually exclusive access to the application card, the criterion determined at least in part by the monitoring of the plurality of physical buses by the application card.
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Abstract
A communication interface device with a card chassis capable of holding a number of electronic equipment or circuit cards. The card chassis provides a communication backplane that provides a plurality of communication buses accessing each of the equipment cards in the card chassis. To select between communication buses with mutually exclusive access to the electronic circuit card, an arbiter monitors the communication buses and determines which of the plurality of communication bus will be provided access to the electronic circuit card.
20 Citations
16 Claims
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1. An electronic application card performing communication functions, the application card comprising:
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a plurality of physical communication buses accessing the application card, wherein the physical communication buses have mutually exclusive access to the application card;
a physical interface switch interfaced to the plurality of communication buses, the physical interface switch monitoring the plurality of physical buses and selecting between a plurality of physical buses accessing the application card; and
a criterion to determine the appropriate physical bus to allow mutually exclusive access to the application card, the criterion determined at least in part by the monitoring of the plurality of physical buses by the application card. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An equipment card chassis for containing a plurality of application cards comprising:
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a plurality of communication buses for transmitting information between application cards;
a plurality of application cards, each of the application cards having more than one of the plurality of communication buses accessing the application card, each application card comprising;
a physical interface switch to select between the plurality of communication buses; and
a criterion to determine which of the plurality of buses has access to the application card. - View Dependent Claims (9, 10, 11)
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12. An electronic circuit card accessed by a plurality of communication buses, the circuit card comprising:
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a first communication bus accessing the electronic circuit card;
a second communication bus accessing the electronic circuit card;
wherein said first communication bus and said second communication bus require mutually exclusive access to the circuit card; and
a third communication bus, wherein the third communication bus provides a criterion to determine between which of the first and second communication bus has access to the electronic circuit card. - View Dependent Claims (13, 14, 15, 16)
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Specification
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Current AssigneeHewlett-Packard Development Company, L.P. (HP Inc.)
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Original Assignee3Com Corporation (HP Inc.)
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InventorsBrown, Steven R., Cranston, Michael T.
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Primary Examiner(s)Lefkowitz, Sumati
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Application NumberUS09/290,596Time in Patent Office1,211 DaysField of Search710/107-125, 710/305, 370/362-364, 370/395--39US Class Current710/107CPC Class CodesG06F 13/36 for access to common bus or...G06F 2213/0016 Inter-integrated circuit (I2C)
