Marvell Asia Pte., Ltd.

Tonmoy Shankar Mukherjee

Lenin Patra

Radhakrishnan L Nagarajan

Masaki Kato

Gary Mak

Interface circuitry for an active cable includes a first active cable interface configured for coupling to a first end of the active cable, and a second active cable interface configured for coupling to a second end of the active cable. The first active cable interface includes first transmitter circuitry including linear driving circuitry or non-linear driving circuitry, and first receiver circuitry including linear receiving circuitry or non-linear receiving circuitry. The second active cable interface includes second transmitter circuitry including linear driving circuitry when first transmitter circuitry includes non-linear receiving circuitry, and non-linear driving circuitry when first transmitter circuitry includes linear receiving circuitry. The second receiver circuitry includes linear receiving circuitry when first receiver circuitry includes non-linear driving circuitry, and non-linear receiving circuitry when first receiver circuitry includes linear driving circuitry.

Active cable interface with hybrid direct drive and re-timer integration

In an optical receiver apparatus for use with multiple optical modulation techniques, a photodiode circuit is configured to process optical signals corresponding to multiple optical modulation techniques, including a first modulation technique and a second modulation technique different from the first modulation technique. The photodiode circuit includes: a first photodiode configured to receive a first optical signal corresponding to a first modulation technique, and a multiple-input second photodiode coupled in series with the first photodiode. The multiple-input second photodiode is configured to receive i) a second optical signal corresponding to the first modulation technique, and ii) a third optical signal corresponding to the second modulation technique. An input of a transimpedance amplifier is coupled to the first photodiode and the second photodiode via a node between the first photodiode and the second photodiode.

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Camarillo, CA, United States of America

Tonmoy Shankar Mukherjee