公开(公告)号：US11582018B2

公开(公告)日：2023-02-14

申请号：US17394299

申请日：2021-08-04

Applicant: Faraday Technology Corp.

Inventor： Jing-Zhi Gao ,  Yu-Hsin Tseng ,  Yung-Sung Chang ,  Zhi-Xin Lin

IPC: H04L7/00

Abstract: A clock data calibration circuit including a first comparator, a multi-phase clock generator, a plurality of samplers, a plurality of data comparators and a data selector is provided. The first comparator compares first input data with second input data to generate a data signal. The multi-phase clock generator generates a plurality of clock signals, and the clock signals are divided into a plurality of clock groups. The sampler samples the data signal according to the clock groups to respectively generate a plurality of first sampled data signal groups. The data comparators respectively sample the first sampled data signal groups according to selected clocks to generate a plurality of second sampled data signal groups. Each data comparator generates a plurality of status flags according to a variation state of a plurality of second sampled data. The data selector generates a plurality of output data signals according to the status flags.

公开(公告)号：US20220337385A1

公开(公告)日：2022-10-20

申请号：US17394299

申请日：2021-08-04

Applicant: Faraday Technology Corp.

Inventor： Jing-Zhi Gao ,  Yu-Hsin Tseng ,  Yung-Sung Chang ,  Zhi-Xin Lin

IPC: H04L7/00

Abstract: A clock data calibration circuit including a first comparator, a multi-phase clock generator, a plurality of samplers, a plurality of data comparators and a data selector is provided. The first comparator compares first input data with second input data to generate a data signal. The multi-phase clock generator generates a plurality of clock signals, and the clock signals are divided into a plurality of clock groups. The sampler samples the data signal according to the clock groups to respectively generate a plurality of first sampled data signal groups. The data comparators respectively sample the first sampled data signal groups according to selected clocks to generate a plurality of second sampled data signal groups. Each data comparator generates a plurality of status flags according to a variation state of a plurality of second sampled data. The data selector generates a plurality of output data signals according to the status flags.