Mellanox Technologies, Ltd.

Ofir Sadeh

Dotan David Levi

Natan Manevich

Jonathan Oliel

Wojciech Wasko

Bar Shapira

Arnon Sattinger

Doron Fael

Maciek Machnikowski

Maciej Machnikowski

Wojciech Waśko

In one embodiment, a processing system includes an interface controller to receive a data signal from a remote link partner over a link, and recover a clock signal from the received data signal, frequency generation circuitry to receive the recovered clock signal, and output a local clock signal responsively to the received recovered clock signal, wherein the interface controller is configured to drive a transmit symbol rate responsively to the local clock signal, and a digital control loop including the interface controller and the frequency generation circuitry, wherein the interface controller is configured to identify a clock drift, generate a digital control signal responsively to the clock drift, and send the digital control signal to the frequency generation circuitry, which is configured to adjust a frequency of the local clock signal responsively to the digital control signal in order to reduce the clock drift.

Hybrid clock synchronization

In one embodiment, a system includes a digitally controlled oscillator (DCO) to generate a local clock having a local clock frequency, and clock synchronization circuitry to receive from a device a signal indicative of a remote clock frequency, compare measures of the remote clock frequency and the local clock frequency; generate a digital control command based on the comparison; and provide the digital control command to the DCO, wherein the DCO is to adjust the local clock frequency responsively to the digital control command.

Physical layer syntonization using digitally controlled oscillator

Growing community of inventors

Shoham, Israel

Ofir Sadeh