US 2007/0166041 A1Published application

Reprogrammable device address for a serial interface in an optic module

AssigneeMindspeed Technologies, Inc.

InventorsMike Le, Keith Jones

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Abstract

An optic module is disclosed having a shared bus interface, a transmit disable line, a memory and control logic or a processor configured to facilitate address modification via a bus shared by multiple optic modules. A single housing may contain multiple modules, all of which are preferably accessible via a shared host via a shared bus. Standard compliant modules share a common address, which inhibits communication with only a particular optic module, via the shared bus, in a housing containing multiple optic modules. Using a common message to all modules to treat a transmit disable line as a module select line, a single module may be active during an address re-write operation. This process may repeat until all the modules within the housing have unique addresses.

Claims19

Dependent claims

A method for modifying an address of two or more optic modules comprising:

providing a host and two or modules, wherein the host is connected to a first module and a second module via a shared two line path and to the first module via a first transmit disable path and to the second module via a second transmit disable path;
sending a first command to the first module and the second module via the shared two line path;
receiving the first command at the first module and the second module;
responsive to the first command, modifying operation of the first module and the second module to react to signals received by the first module and the second module via a transmit disable path as instructions to enable or disable module communication with the host;
sending a disable signal from the host to the second module via the second transmit disable path thereby disabling communication via the shared two line path between the second module and the host;
and
sending an address change signal to the first module from the host via the shared two line path to thereby change the address of the first module.

4 more elements

Dependencies are inferred from the claim text.