W6100 datasheet(63/149 Pages) WIZNET

63 / 149 page

W6100 – Hardwired Dual TCP/IP Stack Controller

63/149

It describes TCP version after connection with Destination in TCPD

Mode.

0 : TCP4

1 : TCP6

TCPOP

TCP Operation Mode

0 : TCP Client

1 : TCP Server

IP6T

IPv6 Address type

It describes Source IPv6 Address of the sent packet in TCP6 and TCPD

Mode.

0 : LLA

1 : GUA

4.2.9 Sn_PNR (SOCKET n IP Protocol Number Register)

[R=W] [0x0100] [0x0000]

In IPRAW4 and IPRAW6 mode, Sn_PNR sets upper layer protocol number of IPv4, or next header

of IPv6. Please refer to Table 7 and IANA_Protocol Numbers to set sn_PNR.

DO NOT set as TCP(0x06) and UDP(0x11).

4.2.10 Sn_TOSR (SOCKET n IP Type of Service Register)

[R=W] [0x0104] [0x00]

Sn_TOSR sets TOS (Type Of Service) of IPv4 header.

ref) IANA_IP Parameters

* CAUTION

W6100 does not support Traffic Class and Flow Label Field in IPv6 Header. Both will be

fixed as ‘0’.

4.2.11 Sn_TTLR (SOCKET n IP Time To Live Register)

[R=W] [0x0108] [0x80]

Sn_TTLR sets TTL(Time To Live) of IPv4 header, or HOP limit field in IPv6 header.

ref) IANA_IP_Parameters

4.2.12 Sn_FRGR (SOCKET n Fragment Offset in IP Header

[R=W] [0x010C-0x010D] [0x4000]

Sn_FRGR sets Fragment Offset of IP Header.

W6100 Datasheet(PDF) 63 Page - WIZnet Co., Ltd