W5100S datasheet(41/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

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0 : Using IGMP version 2

1 : Using IGMP version 1

Reserved

[3:0]

P[3:0]

Protocol Mode

This Bits set SOCKET Protocol Mode. MACRAW Mode is used only with

SOCKET 0.

Protocol Mode

SOCKET Closed

TCP

UDP

IPRAW

MACRAW

3.2.2 Sn_CR (SOCKET n Command Register)

[RW][AC] [0x0001+0x0100*(n+4)] [0x00]

Sn_CR configures SOCKET n Command. After W5100S executes SOCKET Command, the

corresponding Sn_CR Bit is automatically cleared. Next SOCKET Command must be configured

after previous SOCKET Command Bit cleared.

Value

Symbol

Description

0x01

OPEN

SOCKET OPEN Command

Before OPEN Command, HOST must be set SOCKET Mode with Sn_MR.

After OPEN Command done, Sn_SR shows SOCKET Status.

Sn_MR (P[3:0])

Sn_SR

Sn_MR_CLOSE (‘0000’)

SOCK_CLOSED (0x00)

Sn_MR_TCP (‘0001’)

SOCK_INIT (0x13)

Sn_MR_UDP (‘0010’)

SOCK_UDP (0x22)

Sn_MR_IPRAW (‘0011’)

SOCK_IPRAW (0x32)

S0_MR_MACRAW (‘0100’) SOCK_MACRAW (0x42)

0x02

LISTEN

TCP LISTEN Command

After LISTEN Command, TCP Mode SOCKET waits for SYN Packet from

Peer for TCP Connection in SOCK_INIT (Sn_SR = ‘0x13’).

(Ref 4.3.1 TCP Server)

0x04

CONNECT

TCP CONNECT Command

After CONNECT Command, TCP Mode SOCKET transmits SYN Packet to

Peer for TCP Connection in SOCK_INIT (Sn_SR = ‘0x13’).

W5100S Datasheet(PDF) 41 Page - WIZnet Co., Ltd

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