W5100S datasheet(23/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

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3.1

Common Registers

3.1.1 MR (Mode Register)

[RW][0x0000] [0x03]

MR is used for Reset, PING Block and PPPoE Enable

RST

PPPoE

Bit

Symbol

Description

RST

Reset

If this Bit is ‘1’, All W5100S Registers will be initialized.

It will be automatically cleared as ‘0’ after 3 SYS_CLK

[6:5]

Reserved

PING Response Block

If this Bit is ‘1’, it blocks the Response to a ping request.

1 : Disable PING Response

0 : Enable PING Response

PPPoE

PPPoE Enable

1 : Enable PPPoE

0 : Disable PPPoE

[2:0]

Reserved

3.1.2 GWR (Gateway IP Address Register)

[R=W] [0x0001-0x0004] [0x00]

GWR configures the Gateway Address when NETLCKR (Network Lock Register) is on Unlock Mode.

Ex) GWR = “192.168.0.1”

GWR0(0x0001)

GWR1(0x0002)

GWR2(0x0003)

GWR3(0x0004)

192 (0xC0)

168 (0xA8)

0 (0x00)

1 (0x01)

3.1.3 SUBR (Subnet Mask Register)

[R=W] [0x0005–0x0008] [0x00]

SUBR configures the Subnet Mask Address when NETLCKR (Network Lock Register) is on Unlock

Mode.

Ex) SUBR = “255.255.255.255”

SUBR0(0x0005)

SUBR0(0x0006)

SUBR0(0x0007)

SUBR0(0x0008)

W5100S Datasheet(PDF) 23 Page - WIZnet Co., Ltd

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