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W6100 Datasheet(PDF) 128 Page - WIZnet Co., Ltd |
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W6100 Datasheet(HTML) 128 Page - WIZnet Co., Ltd |
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128 / 149 page ![]() W6100 – Hardwired Dual TCP/IP Stack Controller 128/149 Timeout? If there is no RA packet during retransmission time, SLIR[TOUT] is set. { /* check TIMEOUT Interrupt */ if(SLIR[TOUT] == 1) { SLIRCLR[TOUT] = ‘1’; /* clear Interrupt */ goto SUCCESS; } else goto Response?; } SUCCESS Prefix length, flags, valid lifetime, prefix lifetime, and prefix address of the RA packet are saved in PLR, PFR, VLTR, PLTR, and PAR, respectively. { Prefix_length = PLR; /* RA Prefix Length */ Flags = RAFLGR; /* RA Flags */ Valid_Lifetime = VLTR; /* RA Valid Life Time */ Prefix_Lifetime = PLTR; /* RA Prefix Life Time */ Prefix_address[0:15] = PAR[0:15]; /* RA Prefix Address */ } 6.6.7 Unsolicited NA(Neighbor Advertisement) SLCR[NA] transmits unsolicited NA packet. Destination address is automatically configured FF02::1(All-Node Multicast Address) and Target address is automatically configured by LLAR or GUAR according to SLPR. Because Unsolicited NA is an unresponsive message, SLIR [TIOUT] is set when the transmission is completed. Figure 34 shows the flow of unsolicited NA operation. |
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