Inphi Corporation

Travis William Lovitt

Arash Farhoodfar

Benjamin P Smith

Stephane Dallaire

An SR latch circuit with single gate delay is provided. The circuit has an enable input and an SR latch. There is first input stage having an input for receiving a set input and having an output for producing a first component of the SR latch circuit output, the first input stage having only one transistor that receives the enable input, the first input stage becoming transparent while enabled, the first input stage having a single gate delay between the input of the first input stage and the output of the first input stage. There is a second input stage having an input for receiving a reset input and having an output for producing a second component of the SR latch circuit output, the second input stage having only one transistor that receives the enable input, the second input stage becoming transparent while enabled, the second input stage having a single gate delay between the input of the second input stage and the output of the second input stage.

SR latch circuit with single gate delay

Receiver circuitry is disclosed that can take circuit branches offline to possibly adapt an offset value. In one embodiment, a circuit in a receiver has at least two branches. Each branch includes an adjustor to adjust the branch signal by an offset value. Selection circuitry takes one of the branches offline by selecting the output of that branch as an offline value, and by selecting the output of one or more of the other branches as a data decision value. The selection circuitry changes which branch is taken offline during the operation of the circuit. When a branch is taken offline, an offset value associated with that branch may be updated, if necessary.

Circuit and method for performing adaption on all receiver branches

Circuit and method for performing adaptation on all receiver branches

A combined multiplexer and latch circuit is provided that has only a single gate delay between the input of the overall circuit and the output of the circuit. Two complementary input signal stages each receive a complementary input signal and a multiplexer input. A clocked preset circuit presets a signal at the output of the combined multiplexer and latch circuit with timing based on a first phase of an input clock. A storage circuit stores a value based on the output of the combined multiplexer and latch circuit with timing based on a second phase of the input clock. The circuit has a preset mode during which the output of the combined multiplexer and latch circuit is preset, and has a latch mode during which a value output by the selected complementary signal input stage is output by the circuit and also stored in the storage circuit.

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Ottawa, Canada

Travis William Lovitt