K60P100M100SF2RM Datasheet, PDF (1181/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Field Name
Code
Checksum
Chapter 44 10/100-Mbps Ethernet MAC (ENET)
Table 44-62. IP Header Fields (continued)
Description
8-bit code that is related to the message type
16-bit one's complement checksum over the complete ICMP datagram
44.4.2.5 User Datagram Protocol (UDP) Datagram Format
Following the IP header, a user datagram protocol header is found when the protocol
identifier is 17.
Following the UDP header is the payload of the datagram. The header byte order follows
the conventions given for the IP header above.
Table 44-63. UDP Header Format
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
8
7
6
5
4
3
2
1
0
Source Port
Destination Port
Length
Checksum
Field Name
Source port
Destination port
Length
Checksum
Table 44-64. UDP Header Fields
Description
Source application port
Destination application port
Length of user data which follows immediately the header including the UDP header. That is, the
minimum value is 8.
Checksum over the complete datagram and some IP header information
44.4.2.6 TCP Datagram Format
Following the IP Header, a TCP header is found when the protocol identifier has a value
of 6.
The TCP payload immediately follows the TCP header.
Table 44-65. TCP Header Format
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
8
7
6
5
4
3
2
1
0
Source port
Destination port
Table continues on the next page...
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1181