Configurable two-wire interface module

• US 7,765,348 B2
• Filed: 03/07/2005
• Issued: 07/27/2010
• Est. Priority Date: 03/05/2004
• Status: Active Grant

• Current Assignee: II-VI Delaware, Inc. (Coherent Corp.)
• Original Assignee: Finisar Corporation (II-VI Incorporated)
• Inventors: Dybsetter, Gerald L.
• Primary Examiner(s): Tsai; Henry W. H.
• Assistant Examiner(s): Snyder; Steven G
• Application Number:
  US11/074,901
• Publication Number:
  US 20050243408A1
• Time in Patent Office: 1,968 Days
• Field of Search: 710/315, 710/105, 710/305, 710/309, 710/311, 710/312, 398/135, 398/138, 359/341.1, 359/337.11
• US Class Current: 710/105
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

A telecommunications system and constituent two-wire interface module. The two wire interface module includes a logic component configured to communicate over the same pair of wires using different two-wire interface protocols depending on an input signal presented on a configuration input. This configurability allows the two-wire interface module to use the same two wires to communicate with a variety of other two-wire interface modules, even if those two-wire interface modules communicate using different two-wire interface protocols.

Claims

1. An optical transceiver, the optical transceiver including:

a laser driver;

a post-amplifier; and

a digital core component, wherein the digital core component includes;

a register array component, wherein the register array component is configured to store one or more control values which control the laser driver and post-amplifier;

a slave component, wherein the slave component is configured to read data from and write data to the register array component; and

a boot component, wherein the boot component includes;

a two-wire interface module, the two-wire interface module including;

a first two-wire interface, wherein the first two-wire interface is configured to transmit data to and receive data from the slave component; and

wherein the first two-wire interface includes;

 

a first interface wire; and

 

a second interface wire;

a second two-wire interface, wherein the second two-wire interface is configured to transmit data to and receive data from an external control source; and

wherein the second two-wire interface includes;

 

a third interface wire; and

 

a fourth interface wire;

a configuration input; and

a logic component configured to;

 

communicate over the first two-wire interface with the slave component using a first two-wire interface protocol;

 

communicate over the second two-wire interface using a first two-wire interface protocol when the configuration input receives a first input signal correlating to the first two-wire interface protocol;

 

communicate over the second two-wire interface using the second two-wire interface protocol when the configuration input receives a second input signal correlating to the second two-wire interface protocol,

wherein the slave component includes a FSB slave component and the first two-wire interface protocol includes the Finisar Serial Bus (FSB) two-wire interface protocol and the Finisar Serial Bus (FSB) two-wire interface protocol includes;

a preamble field;

a frame start field;

an operation field;

a device identifier field;

a basic address field;

a first bus turnaround field;

a data field;

a second bus turnaround field; and

a frame end field.

2. An optical transceiver in accordance with claim 1, wherein the Finisar Serial Bus (FSB) two-wire interface protocol further includes:

an extended field;

an bus hold field;

an cyclic redundancy checking field;

an acknowledgement field; and

an error status field.

3. An optical transceiver in accordance with claim 1, wherein the logic component includes a master component, wherein the master component is configured to communicate with the slave component over the first two-wire interface module and wherein:

the first wire is configured to transmit a clock signal; and

the second wire is configured to transmit a data signal.