SLAU723A October 2017 ā October 2018 MSP432E401Y , MSP432E411Y
The IEEE 1588-2008 version supports Peer-to-Peer PTP (Pdelay) message in addition to SYNC, Delay Request, Follow-up, and Delay Response messages. Figure 15-12 shows the method to calculate the propagation delay in clocks supporting peer-to-peer path correction.
Figure 15-12 Propagation Delay Calculation in Clocks Supporting Peer-to-Peer Path Correction As shown in Figure 15-12, the propagation delay is calculated in the following way:
To minimize errors because of any frequency offset between the two ports, Port-2 returns the Pdelay_Resp message as quickly as possible after the receipt of the Pdelay_Req message. The Port-2 returns any one of the following: