W6100 datasheet(55/149 Pages) WIZNET

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W6100 – Hardwired Dual TCP/IP Stack Controller

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4.2

SOCKET Register

4.2.1 Sn_MR (SOCKET n Mode Register)

[R=W] [0x0000] [0x00]

Sn_MR sets SOCKET mode and options. It must be set before SOCKET OPEN (Sn_CR[OPEN] = ‘1’).

MULTI/

BRDB/

FPSH

ND/

MC/

SMB/

MMB

UNIB/

MMB6

R=W

Bit

Symbol

Description

MULTI/

MULTI : Multicast Mode

It is valid when Sn_MR[3:0] is UDP4, UDP6 or UDPD.

ref) 6.3.3 UDP Multicast

0 : Disable UDP Multicast

1 : Enable UDP Multicast

MF : MAC Filter Enable

It is valid when Sn_MR[3:0] is MACRAW mode.

0 : Disable MAC Filter (Receive All Packets)

1 : Enable MAC Filter (Receive only Multicast, Broadcast and Source

MAC(SHAR) Address Packets)

BRDB/

FPSH

BRDB : Broadcast Block

It is valid when Sn_MR[3:0] is UDP4, UDP6, UDPD or MACRAW mode.

ref) 6.3.2 UDP Broadcast

0 : Disable UDP Broadcast Block

1 : Enable UDP Broadcast Block

FPSH : Force Push flag

It sets PSH flag in DATA packet forcedly when Sn_MR[3:0] is TCP4,

TCP6 or TCPD.

0 : Disable Force PSH flag (Set PSH flag only in the last DATA Packet

sent by SEND Command)

1 : Enable Force PSH flag

ND/

MC/

ND : No Delayed ACK

It is valid when Sn_MR[3:0] is TCP4, TCP6 or TCPD.

0 : Disable No Delayed ACK (Send ACK Packet after Sn_RTR)

W6100 Datasheet(PDF) 55 Page - WIZnet Co., Ltd

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