Reliable transceiver microcode update mechanism

Details Reliable transceiver microcode update mechanism Reliable transceiver microcode update mechanism

2011-01-18

2011-01-18

Singh, Dalzid (Department: 2613)

Optical communications

Optical transceiver

C398S136000, C398S022000

Reexamination Certificate

active

07873281

ABSTRACT:
A method for dynamically updating an optical transceiver (or optical transmitter or optical receiver) that has at least one processor, a persistent memory, and a microcode loader mechanism. The persistent memory includes microcode comprising instructions that, when executed by the at least one processor, control at least one component of the optical transceiver, transmitter, or receiver. In order to implement the invention, data is written to the persistent memory of the optical transceiver to indicate that an updating of microcode currently stored on the persistent memory is to occur. The optical transceiver processes received microcode, which contains instructions that are structured such that when executed by the at least one processor of the optical transceiver, the execution of the instructions affects the operation of the optical transceiver. Then, the processed representation of the received microcode is written to the persistent memory. The optical transceiver then determines that all of the microcode that is to be written to the persistent memory during the update has been written to the persistent memory. Finally, the persistent memory is altered to reflect that the update is complete.

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