W5100S datasheet(53/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

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Functional Description

W5100S provides Internet Connectivity with simple register control. In this chapter, the

Initialization of W5100S, Data Communication method according to each TCP, UDP, IPRAW,

MACRAW Mode and the additional functions are described step by step based on the pseudo

code.

4.1

W5100S RESET

⚫

Set Hardware before Reset. (Ref 7.4.1 Reset Timing)

⚫

Set HOST Interface Mode with MOD [3:0] pin.

⚫

Supply the Reset signal longer than 500ns on RSTn pin for Hardware Reset.

⚫

Wait for TSTA (Ref 7.4.1 Reset Timing)

4.2

Initialization

The Network Information and SOCKET n TX / RX buffer are set in the W5100S Initialization

Process.

4.2.1 Basic Setting

To operate the W5100S properly, set the following Registers according to User’s Application.

⚫

Mode Register (MR)

⚫

Interrupt Mask Register (IMR)

⚫

Retransmission Time Register (RTR)

⚫

Retransmission Count Register (RCR)

More Information for the above registers can be found in each Register Descriptions.

4.2.2 Network Information Setting

Set the basic Network Information for Internet Communication.

NETWORK SETTING:

{

/* W5100S MAC Address, 11:22:33:AA:BB:CC */

SHAR[0:5] = { 0x11, 0x22, 0x33, 0xAA, 0xBB, 0xCC };

/* W5100S Gateway IP address, 192.168.0.1 */

GAR[0:3] = { 0xC0, 0xA8, 0x00, 0x01 };

W5100S Datasheet(PDF) 53 Page - WIZnet Co., Ltd