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EP0742612A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Multi-connector termination method and apparatus

Assignee: LSI Logic FSI Corp
•
Filing: 1996-05-01
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Granted: —
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Expires: 2016-05-01
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Abstract

Abstract The present invention provides for the automatic termination of cables (25,27,29) coupled to an adapter card (30). The presence or absence of devices (33,35,37) attached to such cables (25,27,29) are sensed and a terminator circuit (34) is selectively activated to provide termination for the cables (25,27,29) depending on the configuration of devices (33,35,37) attached to the adapter card (30). In one embodiment, a plurality of dissimilar types of devices (33,35) having different data widths are attached to a common adapter card (30) via a plurality of cables (25,27). The cables (25,27) provide for interconnection of devices (33,35) to the adapter card (30) via a bus protocol. The signals to/from the cables (25,27) are sourced/sinked from a controller chip (32). A terminator circuit (34) in close proximity to the controller chip (32) is selectively activated to provide termination for the host side of the bus, depending on the types of devices (33,35,37) attached to the bus.

Inventors

  • 👤 Brian E. Lamkin
  • 👤 Raymond S. Rowhuff
  • 👤 Kenneth J. Thompson

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 10:26
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/4068; G06F13/4086; H; H01; H01R; H01R29/00; H01R31/00; H01R31/005

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 81 words
A method of terminating at least one of a plurality of interconnect cables (25,27,29) of apparatus comprising an adapter card (30) and said plurality of interconnect cables (25,27,29) coupled thereto, characterized by the steps of determining whether a device (33, 133; 35, 135; 37, 137) is connected to at least one of the plurality of interconnect cables (25,27,29) and selectively coupling at least one terminator circuit (34) on the adapter card (30) to at least one of the interconnect cables (25,27,29).
Claim 2
Dependent Claim 22 words
A method as claimed in Claim 1, wherein the interconnect cables (25,27,29) are attached to devices (33,133;35,135;37,137) having dissimilar data path characteristics.
Claim 3
Independent Claim 59 words
A method of automatically terminating an SCSI bus (31) having a plurality of interconnect cables (25,27,29) coupled to an SCSI controller (32), characterized by the steps of sensing whether a device (33,133;35,135;37,137) is connected to each of the interconnect cables (25,27,29); and selectively coupling at least one terminator circuit on the SCSI controller (32) to the SCSI bus (31).
Claim 4
Dependent Claim 23 words
A method as claimed in claim 2 or 3, wherein at least two of said interconnect cables (25,27,29) have different data bus widths.
Claim 5
Dependent Claim 48 words
Multi-connector termination apparatus comprising a controller card (30) including a controller module (32), a plurality of connectors (24,26,28) having a plurality of electrical contacts, and a terminator circuit (34); and means for selectively coupling the terminator circuit (34) to at least one of the plurality of electrical contacts.
Claim 6
Dependent Claim 25 words
Apparatus as claimed in Claim 5, further comprising at least one interconnect cable (25,27,29) coupled to at least one of the plurality of connectors (24,26,28).
Claim 7
Dependent Claim 22 words
Apparatus as claimed in Claim 6, further comprising a plurality of devices (33,133;35,135;37,137) coupled to the at least one interconnect cable (25,27,29).
Claim 8
Dependent Claim 71 words
A computer system, comprising a central processing unit, a peripheral controller (32) having a terminator circuit (34), a bus interconnecting the peripheral controller to the central processing unit, and a plurality of interconnect cables (25,27,29) coupled to the peripheral controller (32), characterized by a circuit (40) for sensing whether a device (33,133;35,135;37,137) is connected to any one of the plurality of interconnect cables (25,27,29) and selectively enabling the terminator circuit (34).
Claim 9
Dependent Claim 30 words
A computer system as claimed in Claim 8, wherein the peripheral controller (32) is arranged to control a plurality of devices (33,133;35,135;37,137) coupled to the plurality of interconnect cables (25,27,29).
Claim 10
Dependent Claim 17 words
A computer system as claimed in Claim 9, wherein said plurality of devices (33,133;35,135;37,137) have dissimilar characteristics.

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