Reconfigurable network interface apparatus and method

• US 5,671,355 A
• Filed: 09/13/1996
• Issued: 09/23/1997
• Est. Priority Date: 06/26/1992
• Status: Expired due to Fees

• Current Assignee: Predacomm, Inc.
• Original Assignee: Predacomm, Inc.
• Inventors: Collins, Mark Andrew
• Primary Examiner(s): Treat, William M.
• Assistant Examiner(s): VU, VIET DUY
• Application Number:
  US08/713,755
• Time in Patent Office: 375 Days
• Field of Search: 395/500, 395/200.02, 395/200.13, 395/200.2, 395/680, 395/681, 395/285, 395/306, 395/309, 395/828, 395/831, 395/834, 395/835, 395/882, 395/884
• US Class Current: 709/250
• CPC Class Codes: G06F 13/128 for dedicated transfers to a network for protocol converters G06F13/387
• CPC Class Codes: H04L 12/5692 Selection among different networks

Abstract

A reconfigurable computer network interface device (10) includes a reconfigurable controller (12), reconfigurable bus interface (22), and reconfigurable transceiver (14). The device (10) also includes a configuration control arrangement (20) and on-board memory (16) for storing configuration instructions. The preferred form of the invention also includes an arrangement for receiving configuration instructions from an external source. The reconfigurable bus interface (22) may be configured by hardware set-up and operational software instructions to emulate a bus interface for any of a number of different computer bus architectures. A bus adapter (26) connects between a bus port (39) associated with the reconfigurable bus interface (22) and the computer bus to provide the physical connection between the device (10) and the host computer. The reconfigurable transceiver (14) is reconfigurable by hardware set-up and operational software instructions to communicate in any one of a number of different network hardware protocols. A media connector (24a, 24b) cooperates with a transceiver port (23a, 23b) associated with the reconfigurable transceiver (14) to provide the physical connection between the device (10) and network medium (32a, 32b). The reconfigurable controller (12) is configurable by hardware set-up and operational software instructions to communicate in any of a number of different software protocols. Thus, the reconfigurable computer network interface device (10) may operate as a network card, bridge, router, brouter, or gateway between substantially any type of computer and any type of computer network.

Claims

1. A reconfigurable computer network interface apparatus comprising:

(a) a reconfigurable transceiver having a transceiver port associated therewith for operatively connecting with a transceiver connector of a media adapter, and further including a transceiver configuration input for receiving hardware and software transceiver configuration instructions, and a circuit array that is reconfigurable by the transceiver configuration instructions to communicate across the transceiver port in any one of a plurality of network hardware protocols;

(b) a media adapter having a media connector for operatively connecting to a desired computer network communications medium, and further having the transceiver connector for operatively connecting to the transceiver port, the transceiver connector being in communication with the media connector for enabling data to be passed back and forth between the transceiver port and the communications medium to which the media connector is connected;

(c) a reconfigurable bus interface having a bus port associated therewith, and further including a bus configuration input for receiving hardware and software bus configuration instructions, and a circuit array that is reconfigurable by the bus configuration instructions to communicate across the bus port in any one of a plurality of bus architecture protocols;

(d) a bus adapter having a bus port connector for operatively connecting with the bus port associated with the reconfigurable bus interface, and also having a bus socket connector for operatively connecting to a socket of a particular computer bus type, the bus port connector and the bus socket connector being in communication for passing data back and forth between a computer bus to which the bus socket connector is connected and the bus port associated with the reconfigurable bus interface;

(e) a device bus connected to the reconfigurable transceiver and the reconfigurable bus interface;

(f) a reconfigurable controller connected to the device bus, the reconfigurable controller including a controller configuration input for receiving hardware and software controller configuration instructions, and further including a circuit array that is reconfigurable by the controller configuration instructions to communicate with the reconfigurable transceiver across the device bus in any one of a plurality of different network software protocols and to communicate with the reconfigurable bus interface across the device bus;

(g) configuration control means connected to the reconfigurable transceiver, the reconfigurable controller, and reconfigurable bus interface for directing the transceiver configuration instructions to the transceiver configuration input, for directing the controller configuration instructions to the controller configuration input, and for directing the bus configuration instructions to the bus configuration input; and

(h) memory means connected to the device bus for storing digital data.

2. The apparatus of claim 1 wherein the configuration control means includes:

(a) external configuration input means for receiving controller configuration instructions, transceiver configuration instructions and bus configuration instructions.

3. The apparatus of claim 2 wherein the configuration control means includes:

(a) bus type determination means connected to the bus port for identifying the type of computer bus to which the bus adapter is connected;

(b) wherein the memory means includes a non-volatile memory device for storing bus configuration instructions for a plurality of different bus architectures; and

(c) a configuration controller connected to the device bus for directing bus configuration instructions from the non-volatile memory device to the bus configuration input in response to a bus type signal produced by the bus type determination means.

4. The apparatus of claim 1 wherein the configuration control means comprises:

(a) network type and bus type determination means connected to the transceiver port and to the bus port for identifying the type of network to which the media adapter is connected and for identifying the type of computer bus to which the bus adapter is connected;

(b) wherein the memory means includes a non-volatile memory device for storing bus configuration instructions for a plurality of different bus architectures, transceiver configuration instructions for a plurality of different network hardware protocols, and controller configuration instructions for a plurality of different network software protocols; and

(c) a configuration controller connected to the device bus for directing transceiver configuration instructions from the non-volatile memory device to the transceiver configuration input in response to a network type signal produced by the network type and bus type determination means, and for directing bus configuration instructions from the non-volatile memory device to the bus configuration input in response to a bus type signal produced by the network type and bus type determination means.

5. The apparatus of claim 4 wherein the network type and bus type determination means includes:

(a) means for passively monitoring a network signal pattern received at the transceiver port;

(b) means for passively monitoring a bus signal pattern received at the bus port; and

(c) wherein the configuration controller compares the network signal pattern with stored network signal patterns, each associated with a particular computer network type, and also compares the bus signal pattern with stored bus signal patterns, each associated with a particular bus type.

6. The apparatus of claim 5 wherein the configuration controller includes:

(a) external configuration input means for receiving controller configuration instructions and transceiver configuration instructions associated with computer network types which the network type and bus type determination means cannot identify, and for receiving bus configuration instructions associated with computer bus types which the network type and bus type determination means cannot identify.

7. The apparatus of claim 6 wherein the external configuration input means includes a serial data port.

8. The apparatus of claim 1 wherein the reconfigurable transceiver further includes:

(a) at least one other transceiver port associated therewith, each such other transceiver port for operatively connecting with a transceiver connector of a separate media adapter, and the circuit array included in the reconfigurable transceiver is reconfigurable by the transceiver configuration instructions received at the transceiver configuration input to communicate in any one of a plurality of network hardware protocols across each transceiver port.

9. The apparatus of claim 1 wherein the reconfigurable transceiver, reconfigurable controller, and reconfigurable bus interface each comprise a field programmable gate array.

10. A method of configuring an interface device between a computer and a computer network, the method comprising the steps of:

(a) connecting a bus port to a computer bus slot with a suitable bus adapter, and connecting a transceiver port to a network medium with a suitable media adapter;

(b) monitoring the signals received at the bus port;

(c) comparing a pattern of signals received at the bus port to bus signal patterns stored in memory to identify a bus type;

(d) loading bus configuration instructions from memory onto a reconfigurable bus interface circuit to enable the bus interface circuit to communicate with the computer across the bus port in a bus architecture protocol associated with an identified bus type;

(e) loading transceiver configuration instructions into a reconfigurable transceiver circuit to enable the reconfigurable transceiver circuit to communicate with the computer network across the transceiver port in a network hardware protocol associated with a network type; and

(f) loading controller configuration instructions into a reconfigurable controller circuit to enable the controller circuit to communicate with the bus interface circuit and communicate with the reconfigurable transceiver in a network software protocol associated with the network type.

11. The method of claim 10 wherein the steps of loading transceiver configuration instructions into the reconfigurable transceiver circuit and loading controller configuration instructions into the reconfigurable controller circuit is performed through an external configuration input port for receiving configuration instructions originating at a location external to the interface device.

12. The method of claim 10 further comprising the steps of:

(a) monitoring the signals received at the transceiver port;

(b) comparing a pattern of signals received at the transceiver port with network signal patterns stored in memory to identify a network type; and

(c) wherein loading transceiver configuration instructions into the reconfigurable transceiver circuit comprises loading transceiver configuration instructions associated with the identified network type.

13. The method of claim 10 wherein:

(a) the reconfigurable bus interface circuit, the reconfigurable controller circuit, and the reconfigurable transceiver circuit each comprise a field programmable gate array; and

(b) the steps of loading bus configuration instructions, loading controller configuration instructions, and loading transceiver configuration instructions into the respective reconfigurable circuit comprises applying the respective configuration instructions to a configuration input associated with the respective reconfigurable circuit.

14. The method of claim 12 including the steps of:

(a) loading controller configuration instructions and transceiver configuration instructions from an external source when the signal pattern monitored at the transceiver port does not match any of the network signal patterns in memory; and

(b) loading bus configuration instructions from the external source when the signal pattern monitored at the bus port does not match any of the bus signal patterns in memory.

15. A method of configuring an interface device between a computer and a computer network, the method comprising the steps of:

(a) connecting a bus port to a computer bus slot with a suitable bus adapter, and connecting a transceiver port to a network medium with a suitable media adapter;

(b) loading bus configuration instructions from memory external to the interface device into a reconfigurable bus interface circuit to enable the bus interface circuit to communicate with the computer across the bus port in a bus architecture protocol associated with a computer bus type;

(c) loading transceiver configuration instructions from memory external to the interface device into a reconfigurable transceiver circuit to enable the reconfigurable transceiver circuit to communicate with the computer network across the transceiver port in a network hardware protocol associated with a network type; and

(d) loading controller configuration instructions from memory external to the interface device into a reconfigurable controller circuit to enable the controller circuit to communicate with the bus interface circuit and communicate with the reconfigurable transceiver in a network software protocol associated with the network type.

16. The method of claim 15 wherein the steps of loading bus configuration instructions, loading transceiver configuration instructions, and loading controller configuration instructions are each performed through the bus adapter and bus port.