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W5500 Datasheet(PDF) 35 Page - WIZnet Co., Ltd |
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W5500 Datasheet(HTML) 35 Page - WIZnet Co., Ltd |
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35 / 66 page  W5500 Datasheet Version1.0.9 35 / 66 IR (Interrupt Register) [R/W] [0x0015] [0x00] IR indicates the interrupt status. Each bit of IR can be cleared when the host writes ‘1’ value to each bit. If IR is not equal to ‘0x00’, INTn PIN is asserted low until it is ‘0x00’. 7 6 5 4 3 2 1 0 CONFLICT UNREACH PPPoE MP Reserved Reserved Reserved Reserved Bit Symbol Description 7 CONFLICT IP Conflict Bit is set as ‘1’ when own source IP address is same with the sender IP address in the received ARP request. 6 UNREACH Destination unreachable When receiving the ICMP (Destination port unreachable) packet, this bit is set as ‘1’. When this bit is ‘1’, Destination Information such as IP address and Port number may be checked with the corresponding UIPR & UPORTR. 5 PPPoE PPPoE Connection Close When PPPoE is disconnected during PPPoE mode, this bit is set. 4 MP Magic Packet When WOL mode is enabled and receives the magic packet over UDP, this bit is set. 3~0 Reserved Reserved |
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