W3150 Datasheet, PDF (33/59 Pages) List of Unclassifed Manufacturers – WIZnet’s Online Technical Support

5. Functional Description
By setting some register and memory operation, W3150 provides internet connectivity. This chapter
describes how it can be operated.
5.1. Initialization
Below register is for basic network configuration information to be configured according to the network
environment.
1. Gateway Address Register (GAR)
2. Source Hardware Address Register (SHAR)
3. Source IP Address Register (SIPR)
4. Subnet Mask Register (SUBR)
The Source Hardware Address Regiter (SHAR) is the H/W address to be used in MAC layer, and can be
used with the address that manufacturer has been assigned. The MAC address can be assigned from IEEE.
For more detail, refer to IEEE homepage.
5.2. Data communication
Data communication is available through TCP or UDP. In order to select it, configure protocol field of Socket
n Mode Register(Sn_MR) of the commnucation sockets (W3150 supports total 4 sockets) as TCP(0x01) or
UDP(0x02).
5.2.1. TCP
TCP is connection oriented communication method that will establish connection in advance and deliver the
data through the connection by using IP Address and Port number of the systems. There are two methods to
establish the connection. One is SERVER mode(passive open) that is waiting for connection request. The
other is CLIENT mode(active open) that sends connection request to SERVER.
© Copyright 2005 WIZnet Co., Inc. All rights reserved.
íîñëç