Cypress S6J3200 Series, Manual

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CHAPTER 21:Ethernet MAC
602 S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
224.0.1.129/130/131/132, the destination UDP port is 319 and the control field is correct. The control field
is 00
h
for Sync frames and 01
h
for Delay_Req frames.
For IEEE Std 1588 version 2 messages the type of frame is determined by looking at the message type
field in the first byte of the PTP frame. Whether a frame is version 1 or version 2 can be determined by
looking at the version PTP field in the second byte of version 1 and version 2 PTP frames.
In version 2 messages Sync frames have a message type value of 0
h
, Delay_Req frames have 1
h
,
Pdelay_Req frames have 2
h
and Pdelay_Resp frames have 3
h
.
Example of a Sync frame in the IEEE Std 1588 version 2 (UDP/IPv4) format:
Preamble/SFD 55555555555555D5
h
DA (Octets 0 – 5)
SA (Octets 6 – 11)
Type (Octets 12 – 13) 0800h
IP stuff (Octets 14 – 22)
UDP (Octet 23) 11h
IP stuff (Octets 24 – 29)
IP DA (Octets 30 - 33) E0000181h
source IP port (Octets 34 – 35)
dest IP port (Octets 36 – 37) 013Fh
other stuff (Octets 38 – 41)
message type (Octet 42) 00h
version PTP (Octet 43) 02h
Example of a Pdelay_Req frame in the IEEE Std 1588 version 2 (UDP/IPv4) format:
Preamble/SFD 55555555555555D5
h
DA (Octets 0 – 5)
SA (Octets 6 – 11)
Type (Octets 12 – 13) 0800h
IP stuff (Octets 14 – 22)
UDP (Octet 23) 11h
IP stuff (Octets 24 – 29)
IP DA (Octets 30 - 33) E000006Bh
source IP port (Octets 34 – 35)
dest IP port (Octets 36 – 37) 013Fh
other stuff (Octets 38 – 41)
message type (Octet 42) 02h
version PTP (Octet 43) 02h
Example of a Sync frame in the IEEE Std 1588 version 2 (UDP/IPv6) format:
Preamble/SFD 55555555555555D5
h
DA (Octets 0 – 5)
SA (Octets 6 – 11)
Type (Octets 12 – 13) 86DDh
IP stuff (Octets 14 – 19)
UDP (Octet 20) 11h
IP stuff (Octets 21 – 37)