UM10503
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User manual
Rev. 1.3 — 6 July 2012
733 of 1269
NXP Semiconductors
UM10503
Chapter 26: LPC43xx Ethernet
[1]
PTP event messages are SYNC, Delay_Req (IEEE 1588 version 1 and 2) or Pdelay_Req, Pdelay_Resp
(IEEE 1588 version 2 only).
26.7.4.3.2
PTP Frames Over IPv6
provides information about the fields that are matched to control the snapshots
for the PTP packets sent over UDP over IPv6 for IEEE 1588 version 1 and 2. The octet
positions for the tagged frames are offset by 4. This is based on Annex D of IEEE
1588-2008 standard and the message format defined in
PTP Control Field
(IEEE version 1)
74 0x00/0x01/0x02/
0x03/0x04
0x00 – SYNC,
0x01 – Delay_Req
0x02 – Follow_Up
0x03 – Delay_Resp
0x04 – Management
PTP Message
Type Field (IEEE
version 2)
42 (nibble)
0x0/0x1/0x2/0x3/
0x8/0x9/0xB
/0xC/0xD
0x0 – SYNC
0x1 – Delay_Req
0x2 – Pdelay_Req
0x3 – Pdelay_Resp
0x8 – Follow_Up
0x9 – Delay_Resp
0xA – Pdelay_Resp_Follow_Up
0xB – Announce
0xC – Signaling
0xD - Management
PTP Version
43 (nibble)
0x1 or 0x2
0x1 – Supports PTP version 1
0x2 – Supports PTP version 2
Table 581. IPv4-UDP PTP Frame Fields Required for Control and Status
Field Matched
Octet Position
Matched Value
Description
Table 582. IPv6-UDP PTP Frame Fields Required for Control and Status
Field Matched
Octet Position
Matched Value
Description
MAC Frame Type 12, 13
0x86DD
IP datagram
IP version
14(bits [7:4])
0x6
IP version is IPv6
Layer 4 Protocol
20 (
) 0x11 UDP
PTP Multicast
Address
38 – 53
FF0x:0:0:0:0:0:0:
181 (Hex)
FF02:0:0:0:0:0:0:
6B (Hex)
PTP – Primary multicast address:
FF0x:0:0:0:0:0:0:0:0:181 (Hex)
PTP – Pdelay multicast address:
FF02:0:0:0:0:0:0:0:0:6B (Hex)
UDP Destination
Port
)
0x013F, 0x140
0x013F – PTP event message
0x0140 – PTP general messages