Data Sheet

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iEthernet
W5200
5 Functional Descriptions
By setting some register and memory operation, W5200 provides internet connectivity.
This chapter describes how it can be operated.
5.1 Initialization
Basic Setting
For the W5200 operation, select and utilize appropriate registers shown below.
1. Mode Register (MR)
2. Interrupt Mask Register (IMR)
3. Retry Time-value Register (RTR)
4. Retry Count Register (RCR)
For more information of above registers, refer to the “Register Descriptions.”
Setting network information
Basic network information setting for communication:
It must be set the basic network information.
① SHAR(Source Hardware Address Register)
It is prescribed that the source hardware addresses, which is set by SHAR, use unique
hardware addresses (Ethernet MAC address) in the Ethernet MAC layer. The IEEE manages
the MAC address allocation. The manufacturer which produces the network device
allocates the MAC address to product.
Details on MAC address allocation refer to the website as below.
U http://www.ieee.org/ U , U http://standards.ieee.org/regauth/oui/index.shtml U
② GAR(Gateway Address Register)
③ SUBR(Subnet Mask Register)
④ SIPR(Source IP Address Register)