MDK-ARM Keil, MDK-ARM Datasheet - Page 64

• Manufacturer Part Number: MDK-ARM
• Description: KIT REALVIEW MCU DEVELOPMENT
• Manufacturer: Keil
• Type: Compiler and IDEr

Specifications of MDK-ARM

• For Use With/related Products: ARM MCUs
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

64
Chapter 4. RL-TCPnet Introduction
In a typical microcontroller-based system, this layer corresponds to the Ethernet
MAC with PHY chip and the low-level device driver. The TCP/IP stack handles
the transport and network routing layers.
The network layer handles the transmission of data packets between network
stations using the Internet Protocol (IP). The transport layer provides the
connection between application layers of different stations. Two protocols; the
Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP)
handle this. The application layer provides access to the communication
environment from your user application. This access is in the form of well-
defined application layer protocols such as Telnet, SMTP, and HTTP. It is
possible to define your own application protocol and communicate between
nodes using custom TCP and UDP packets.
The main three protocols used to transfer application data are: the Internet
Protocol (IP), the Transmission Control Protocol (TCP), and the User Datagram
Protocol (UDP). A typical application will also require the Address Routing
Protocol (ARP) and Internet Control Message Protocol (ICMP). In order to
reduce the size of a TCP/IP implementation for a small microcontroller, some
embedded stacks only implement a subset of the TCP/IP protocols. Such stacks
assume that communication will be between a fully implemented stack, i.e. a PC
and the embedded node. The RL-TCPnet is a full implementation that allows the
embedded microcontroller to operate as a fully functional internet station.