W5100 datasheet(58/72 Pages) WIZNET

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W5100 Datasheet(PDF) 58 Page - WIZnet Co., Ltd

Part #	W5100

Description	Single-chip Internet-enabled 10/100 Ethernet Controller

PDF	72 Pages

Scroll/Zoom	100%

Manufacturer	WIZNET [WIZnet Co., Ltd]

Direct Link	https://www.wiznet.io/ko/Product/

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58 / 72 page

5.2.3 IP raw

IP Raw mode can be utilized if transport layer protocol of some ICMP or IGMP that W5100 does

not support, needs to be processed.

◼

Socket Initialization

It initializes the socket as IP raw.

{

START:

/* sets IP raw mode */

Sn_MR = 0x03;

/* sets Protocol value */

/* The value of Protocol is used in Protocol Field of IP Header.

For the list of protocol identification number of upper classification, refer to on line

documents of IANA (http://www.iana.org/assignments/protocol-numbers). */

Sn_PROTO = protocol_value;

/* sets OPEN command */

Sn_CR = OPEN;

/* Check if the value of Socket n Status Register(Sn_SR) is SOCK_IPRAW. */

if (Sn_SR != SOCK_IPRAW) Sn_CR = CLOSE; goto START;

}

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