W6100 datasheet(49/149 Pages) WIZNET

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W6100 – Hardwired Dual TCP/IP Stack Controller

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4.1.48 UIPR (Unreachable IP Address Register)

[RO] [0x41A0-0x41A3] [0x0000_0000]

UIPR is set to the destination IPv4 address of the received packet when receiving ICMPv4

Unreachable Packet (IR[UNR4] = '1').

Ex) Unreachable IP Address = “192.169.10.10”

UIPR0(0x41A0)

UIPR1(0x41A1)

UIPR2(0x41A2)

UIPR3(0x41A3)

192(0xC0)

168(0xA8)

10(0x0A)

4.1.49 UPORTR (Unreachable Port Register)

[RO] [0x41A4-0x41A5] [0x0000]

UPORTR is set to the destination port of the received packet when receiving ICMPv4

unreachable packet (IR[UNR4] = '1').

Ex) Unreachable PORT = “3000” (0x0BB8)

UPORTR0(0x41A4)

UPORTR1(0x41A5)

0x0B

0xB8

4.1.50 UIP6R (Unreachable IPv6 Address Register)

[RO] [0x41B0-0x41BF] [0x0000_0000_0000_0000_0000_0000_0000_0000]

UIP6R is set to the destination IPv6 address of the received packet when receiving ICMPv6

unreachable packet (IR[UNR6] = '1').

Ex) Unreachable IP is “FE80::AB:CDEF”

UIP6R0(0x41B0)

UIP6R1(0x41B1)

UIP6R2(0x41B2)

UIP6R3(0x41B3)

0xFE

0x80

0x00

UIP6R4(0x41B4)

UIP6R5(0x41B5)

UIP6R6(0x41B6)

UIP6R7(0x41B7)

0x00

UIP6R8(0x41B8)

UIP6R9(0x41B9)

UIP6R10(0x41BA)

UIP6R11(0x41BB)

0x00

UIP6R12(0x41BC)

UIP6R13(0x41BD)

UIP6R14(0x41BE)

UIP6R15(0x41BF)

0x00

0xAB

0xCD

0xEF

4.1.51 UPORT6R (Unreachable IPv6 Port Register)

[RO] [0x41C0-0x41C1] [0x0000]

UPORT6R is set to the Destination Port of the received packet when receiving ICMPv6

Unreachable Packet (IR[UNR6] = '1').

Ex) Unreachable PORT is “3000” (0x0BB8)

W6100 Datasheet(PDF) 49 Page - WIZnet Co., Ltd

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