Etopus Technology Inc.

Tze Yin Cheung

Danfeng Xu

Yu Kou

Kai Keung Chan

Paul K Lai

A transmitter device includes a configurable timer circuit that adjusts timing of input data for serial transmission of the input data. The configurable timer circuit may be configured depending on the configured data rate of the transmitter device. In one embodiment, the configurable timer circuit includes a plurality of configurable retimers that retime the input data where at least a portion of one of the plurality of configurable retimers is enabled based on the configured data rate.

Configurable transmitter device based on data rate

A multi-mode viterbi decoder supporting different decoding modes. The viterbi decoder comprises circuitry to output one or more data symbol values. The circuitry sets the one or more data symbol values to a first quantity of unit intervals in a first decoding mode (e.g. PAM-4). The circuitry sets the one or more data symbol values to a second quantity of unit intervals in a second decoding mode (e.g. NRZ). The second quantity of unit intervals is greater than the first quantity of unit intervals. A branch metric circuit is adapted to, in the first decoding mode, generate a set of viterbi branch metrics based on the data symbol values for the first quantity of unit intervals. The branch metric circuit is adapted to, in the second decoding mode, generate the set of viterbi branch metrics based on the data symbol values for the second quantity of unit intervals.

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Hong Kong, China

Tze Yin Cheung