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| Info |
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Check if PTPv2 is supported? To check whether support IEEE 1588-2008 standard (a.k.a PTP Version 2), read HW feature register bit 13 and bit 24. SP7350 does not support PTPv2. |
Compare with NTP
NTP | IEEE 1588 | |
|---|---|---|
Communication | Internet | LAN |
Accuracy | msec | <usec |
H/W Support | No | Usually required, doable without |
Network Time Protocol (NTP) has been the traditional way to synchronization time over Ethernet networks. NTP allows time synchronization up to 100 milliseconds. The IEEE 1588 PTP is required to achieve tighter synchronization. In software PTP applications, single link synchronization in the range of 100 microseconds can be reached. As can be seen in Figure 2, hardware assistance is required to achieve time synchronization in the nanosecond region.
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Hardware Timestamping of PTP
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