公开(公告)号：US11477004B1

公开(公告)日：2022-10-18

申请号：US17379732

申请日：2021-07-19

Applicant: NVIDIA Corp.

Inventor： Pervez Mirza Aziz ,  Vishnu Balan ,  Viswanath Annampedu

IPC: H04L25/49 ,  H04L7/00

Abstract: A clock data recovery circuit detects illegal decisions for received data, accumulates a phase gradient for the data, determines a number of the illegal decisions in a configured window for receiving the data, and if the number of the illegal decisions exceeds a pre-defend number in the window, applies a sum of the accumulated phase gradient and a phase increment having a sign of the accumulated phase gradient to a clock circuit for the data receiver.

公开(公告)号：US20220311592A1

公开(公告)日：2022-09-29

申请号：US17379732

申请日：2021-07-19

Applicant: NVIDIA Corp.

Inventor： Pervez Mirza Aziz ,  Vishnu Balan ,  Viswanath Annampedu

IPC: H04L7/00

Abstract: A clock data recovery circuit detects illegal decisions for received data, accumulates a phase gradient for the data, determines a number of the illegal decisions in a configured window for receiving the data, and if the number of the illegal decisions exceeds a pre-defined number in the window, applies a sum of the accumulated phase gradient and a phase increment having a sign of the accumulated phase gradient to a clock circuit for the data receiver.

公开(公告)号：US11212073B2

公开(公告)日：2021-12-28

申请号：US16802437

申请日：2020-02-26

Applicant: NVIDIA Corp.

Inventor： Pervez Mirza Aziz ,  Vishnu Balan ,  Viswanath Annampedu

IPC: H04L7/033 ,  H04L25/03 ,  H04L7/00

Abstract: A system for data and clock recovery includes a timing error detector, a phase detector, and a phase increment injector. The phase increment injector may be used to determine an increment to affect an output of the phase detector or a clocking element. A sign of the increment is determined from a sign or direction of an accumulated version of a clock and data recovery gradient value.

公开(公告)号：US20200336286A1

公开(公告)日：2020-10-22

申请号：US16802437

申请日：2020-02-26

Applicant: NVIDIA Corp.

Inventor： Pervez Mirza Aziz ,  Vishnu Balan ,  Viswanath Annampedu

IPC: H04L7/033 ,  H04L25/03 ,  H04L7/00

Abstract: A system for data and clock recovery includes a timing error detector, a phase detector, and a phase increment injector. The phase increment injector may be used to determine an increment to affect an output of the phase detector or a clocking element. A sign of the increment is determined from a sign or direction of an accumulated version of a clock and data recovery gradient value.

公开(公告)号：US10700846B1

公开(公告)日：2020-06-30

申请号：US16386029

申请日：2019-04-16

Applicant: NVIDIA Corp.

Inventor： Pervez Mirza Aziz ,  Vishnu Balan ,  Viswanath Annampedu

IPC: H04L7/033 ,  H04L25/03 ,  H04L7/00

Abstract: A system for data and clock recovery includes a timing error detector, a phase detector, and a phase increment injector. The phase increment injector may be used to determine an increment to affect an output of the phase detector or a clocking element. A sign of the increment is determined from a sign or direction of an accumulated version of a clock and data recovery gradient value.