Spoke Clamped Patents (Class 152/235)
  • Patent number: 10749661
    Abstract: Digital serializer/deserializer circuitry includes a data path and a date eye monitoring path. The data path includes a first analog-to-digital converter (ADC) to sample incoming data at a first rate, first digital filter circuitry to filter output of the first ADC, and a data slicer coupled to output of the first digital filter circuitry to output data above a threshold. The monitoring path includes a second ADC to sample the incoming data at a second rate lower than the first rate and to take samples at varying points along the incoming data waveform, second digital filter circuitry to filter output of the second ADC, and another data slicer coupled to output of the second digital filter circuitry to output data above an adjustable threshold and to sweep through varying threshold values. Error rate circuitry compares outputs of the data slicers to determine a data eye error rate.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: August 18, 2020
    Assignee: Marvell International Ltd.
    Inventors: Davide Visani, Min Wu, Paulo Isagani M. Urriza, Mehedi Hasan