Patent ID: 11870554
Assignee: ANALOG DEVICES, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A network node device of an area network, the network node device comprising:
physical layer (PHY) circuitry configured to transmit and receive frames of data via a communication link of the communication network;
medium access control layer (MAC) circuitry;
a receive interface between the PHY circuitry and the MAC circuitry, wherein the receive interface includes a receive clock signal and a delay locked loop (DLL); and
timestamp circuitry configured to:
produce multiple sample signals derived from the receive clock signal using the DLL and a local clock signal of the network node; and
produce a timestamp offset using the multiple sample signals, wherein the timestamp offset is representative of an instantaneous phase offset between the local clock signal of the network node and a local clock signal of a neighbor node of the network node.