W6100 datasheet(124/149 Pages) WIZNET

Part #	W6100

Description	Hardwired Dual TCP/IP Stack Controller

PDF	149 Pages

Scroll/Zoom	100%

Manufacturer	WIZNET [WIZnet Co., Ltd]

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

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W6100 – Hardwired Dual TCP/IP Stack Controller

124/149

6.6.5 DAD (Duplicate Address Detection)

SLCR[NS] executes DAD (Duplicate Address Detection) mechanism to destination IP address

specified by SLDI6PR. SLCR[NS] transmits DAD NS packet.

If there is DAD NA packet from a destination, SLIR[NS] is set and the destination IP address is

invalid as a source IPv6 address. If there is no DAD NA packet from a destination until

retransmission time expires, SLIR[TOUT] is set and the destination IP address is valid as a

source IPv6 address. Refer to 6.7 Retransmission.

Figure 32 shows the flow of DAD operation.

Figure 32 DAD Operation Flow

 Configuration

Configures retransmission time, NS & TOUT interrupt mask, and destination IP address.

{

START :

/* set SOCKET-less Retransmission Timer, 100ms(0x03E8) (단위, 100us) */

//SLRTR[0:1] = {0x03, 0xE8};

/* set SOCKET-less Retransmission Counter, 5 */

W6100 Datasheet(PDF) 124 Page - WIZnet Co., Ltd