User guide

© 2010 Ingenieurbüro Für Ic-Technologie Page 76
Protocol Stack Fundamentals
 Example: UDP for UDP/IP
− User Datagramm Protocol - UDP
IP Data
4 Byte CRC
2 Byte Source Port
2 Byte Destination Port
2 Byte Length
2 Byte UDP Checksum
X Byte Data
IP Header
Destination Address
6 Byte MAC ID
Start-Frame-Delimiter
Source Address
6 Byte MAC ID
7 Byte Clocksynchronisation
2 Byte Length / Typ
You have to process all of your data to calculate the checksum