Toshiba V Series User Manual page 115

Packets
flowing on the
transmission
line
(72 -
1526 bytes)
6F8C0904
IP datagram
(46 -
1500 bytes)
Data field of
IP data field
The packet (up to
flowing on the
1480 bytes)
transmission
line
Figure 6-8 Packet Format/IP Datagram
6.2 EN311 Socket Interface Usage Notes
Preamble (7 bytes)
Signal used to synchronize reception
SFD (Start Frame Delimiter) (1 byte)
Remote station address (6 bytes)
Local station address (6 bytes)
Ethernet type (2 bytes)
0800H:IP ､ 0 806H:ARP
IP header (20 bytes)
UDP header
(8 bytes)
UDP data field
(up to 1472 bytes)
(up to 1460 bytes)
FCS (Frame Check Sequence) (4 bytes)
32-bit CRC code for the sections of the packet other
than the preamble, the SFD, and the FCS.
(Packet error detection)
TCP header
(20 bytes)
TCP data field
95
6