K60P100M100SF2RM Datasheet, PDF (1182/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Functional Description
Table 44-65. TCP Header Format (continued)
Offset
Checksum
Sequence number
Acknowledgement number
Flags
Options
Window
Urgent pointer
Field Name
Source port
Destination port
Sequence
number
Ack. number
Offset
Flags
Window
Checksum
Options
Table 44-66. TCP Header Fields
Description
Source application port
Destination application port
Transmit sequence number
Receive sequence number
Data offset. Number of 32-bit words within the TCP header. If no options, a value of 5.
URG, ACK, PSH, RST, SYN, FIN flags
TCP receive window size information
Checksum over the complete datagram (TCP header and data) and IP header information
Additional 32-bit words for protocol options
44.4.3 IEEE 1588 Message Formats
The following sections describe the IEEE 1588 message formats.
44.4.3.1 Transport Encapsulation
The precision time protocol (PTP) datagrams are encapsulated in Ethernet frames using
the UDP/IP transport mechanism, or optionally, with the newer 1588v2 directly in
Ethernet frames (layer 2).
Typically, multicast addresses are used to allow efficient distribution of the
synchronization messages.
44.4.3.1.1 UDP/IP
The 1588 messages (v1 and v2) can be transported using UDP/IP multicast messages.
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K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.