公开(公告)号：US10784976B2

公开(公告)日：2020-09-22

申请号：US16196970

申请日：2018-11-20

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Kai Yang ,  Adrian Butter ,  Bin Sun ,  Yijian Qi ,  Jilei Yin

IPC: H04J3/06

Abstract: A system and apparatus for obtaining clock synchronization of networked devices and related method are provided. Embodiments include a computer-implemented system, including a primary device having a first high accuracy timestamping assist (HATA) unit attached to a first physical layer; a first time stamping unit; a first clock control; a first medium access control layer connected to the first time stamping unit and the first physical layer via a medium independent interface. A secondary device includes a second HATA unit attached to a second physical layer; a second timestamping unit; a second clock control. The first and second HATA units are configured to detect a departure time, an arrival time, or a combination thereof of a first alignment marker over transmitter serializer and receiver deserializer interfaces of a data transmission between the primary device and the secondary device.

公开(公告)号：US10104148B2

公开(公告)日：2018-10-16

申请号：US15397028

申请日：2017-01-03

Applicant: GLOBALFOUNDRIES INC.

Inventor： Kai Yang ,  Adrian Butter ,  Bin Sun ,  Bin Yu

IPC: H04L12/40 ,  H04L29/06 ,  H04L1/00 ,  H04L29/08 ,  H04L12/64

Abstract: In methods, systems, and devices, master and slave node timestamp synchronization units identify a node start frame delimiter of a time protocol message on transmission medium by matching patterns in the time protocol message to known start frame delimiter patterns. Master and slave node processors of such timestamp synchronization units capture a corresponding node clock time at which the node start frame delimiter is identified by referring to a corresponding node clock signal while each is identifying the node start frame delimiter. The master and slave node processors perform compensation of the node clock time by making adjustments to the node clock time for known time latency. The master and slave node timestamp synchronization units then output the node clock time as timestamps to corresponding timestamp units.

公开(公告)号：US20180191802A1

公开(公告)日：2018-07-05

申请号：US15397028

申请日：2017-01-03

Applicant: GLOBALFOUNDRIES INC.

Inventor： Kai Yang ,  Adrian Butter ,  Bin Sun ,  Bin Yu

IPC: H04L29/06 ,  H04L1/00

CPC classification number: H04L65/608 ,  H04L1/0018 ,  H04L69/323 ,  H04L2012/6454

Abstract: In methods, systems, and devices, master and slave node timestamp synchronization units identify a node start frame delimiter of a time protocol message on transmission medium by matching patterns in the time protocol message to known start frame delimiter patterns. Master and slave node processors of such timestamp synchronization units capture a corresponding node clock time at which the node start frame delimiter is identified by referring to a corresponding node clock signal while each is identifying the node start frame delimiter. The master and slave node processors perform compensation of the node clock time by making adjustments to the node clock time for known time latency. The master and slave node timestamp synchronization units then output the node clock time as timestamps to corresponding timestamp units.