W6100 datasheet(105/149 Pages) WIZNET

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W6100 – Hardwired Dual TCP/IP Stack Controller

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 OPEN

Before Sn_CR [OPEN] command, multicast-group information and Sn_MR[MULTI] must be set.

In UDP4 multicast mode, IGMP (Internet Group Management Protocol) JOIN message is

transmitted by Sn_CR[OPEN] command. IGMP version is set as version 1 or version 2 by

Sn_MR[MS].

In UDP6 multicast mode, join to a multicast-group using MLDv1.

UDP4 Multicast Mode :

{

START :

/* set Multicast-Group hardware address, 01:00:5E:00:00:64 */

Sn_DHAR[0:5] = {0x01, 0x00, 0x5E, 0x00, 0x00, 0x64};

/* set Multicast-Group IP Address, 224.0.0.100 */

Sn_DIPR[0:3] = {0xE0, 0x00, 0x00, 0x64}

/* set Multicast-Group PORT Number, 3000(0x0BB8) */

Sn_DPORTR[0:1] = {0x0B, 0xB8};

Sn_MR[MULTI] = ‘1’; /* set UDP Multicast */

/* set IGMP Version

Sn_MR[MC] = ‘1’ : IGMPv1 ,

Sn_MR[MC] = ‘0’ : IGMPv2 */

Sn_MR[MC] = ‘1’;

goto 6.3.1 UDP Unicast : OPEN(UDP Mode)

}

UDP6 Multicast Mode :

{

START :

/* set Multicast-Group hardware Address, 33:33:00:AB:34:56 */

Sn_DHAR[0:5] = {0x33, 0x33, 0x00, 0xAB, 0xCD, 0xEF};

/* set Multicast-Group IP Address, FF02::100:00AB:CDEF */

Sn_DIP6R[0:15] = {0xFF, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

0x00, 0x00, 0x00, 0x01, 0x00, 0xAB, 0xCD, 0xEF};

/* set Multicast-Group PORT Number, 3000(0x0BB8) */

Sn_DPORTR[0:1] = {0x0B, 0xB8};

Sn_MR[MULTI] = ‘1’; /* set UDP Multicast */

W6100 Datasheet(PDF) 105 Page - WIZnet Co., Ltd