Abstract: Methods and systems for performing data correction and phase optimization are disclosed herein. In some implementations, a system for performing data correction comprises: an analog to digital converter (ADC) configured to receive differential data from a continuous time linear equalizer (CTLE) and generate a bitstream comprising a plurality of data bits and a corresponding plurality of data sign bits; a decision feedback equalization (DFE) block configured to receive the bitstream from the ADC and provide data to a clock and data recovery (CDR) block; and data correction circuitry. In some implementations, the data correction circuitry is configured to: receive the bitstream from the ADC; determine whether to correct a data sign bit; responsive to determining the data sign bit is to be corrected, flip the data sign bit; and provide the plurality of data sign bits, including the flipped data sign bits, to the DFE.

Abstract: Disclosed are some examples of Phase interpolator circuitry used in retimer systems. The phase interpolator circuitry includes a phase interpolator configured to: receive the phase control signal, generate, based on the phase control signal, an output clock signal, and provide the output clock signal to the transmitter to track a plurality data packets. Phase interpolator circuitry is coupled with clock data recovery circuitry. In some implementations, clock data recovery circuitry is coupled between a receiver and a transmitter. The clock data recovery circuitry is configured to: extract a data component from an input data signal associated with the receiver, provide the data component to the transmitter, and generate a phase control signal.

Abstract: Disclosed are some examples of Phase interpolator circuitry used in retimer systems. The phase interpolator circuitry includes a phase interpolator configured to: receive the phase control signal, generate, based on the phase control signal, an output clock signal, and provide the output clock signal to the transmitter to track a plurality data packets. Phase interpolator circuitry is coupled with clock data recovery circuitry. In some implementations, clock data recovery circuitry is coupled between a receiver and a transmitter. The clock data recovery circuitry is configured to: extract a data component from an input data signal associated with the receiver, provide the data component to the transmitter, and generate a phase control signal.

Abstract: Disclosed are some examples of retimer circuitry, systems and methods. In some implementations, clock data recovery circuitry is coupled between a receiver and a transmitter. The clock data recovery circuitry is configured to: extract a data component from an input data signal associated with the receiver, provide the data component to the transmitter, and generate a phase control signal. Phase interpolator circuitry is coupled with the clock data recovery circuitry. The phase interpolator circuitry includes a phase interpolator configured to: receive the phase control signal, generate, based on the phase control signal, an output clock signal, and provide the output clock signal to the transmitter to track data packets of the data component.