W5200 datasheet(18/88 Pages) WIZNET

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SUBR (Subnet Mask Register) [R/W] [0x0005 – 0x0008] [0x00]

This register sets up the subnet mask address.

Ex) In case of “255.255.255.0”

0x0005

0x0006

0x0007

0x0008

255 (0xFF)

0 (0x00)

SHAR (Source Hardware Address Register) [R/W] [0x0009 – 0x000E] [0x00]

This register sets up the Source Hardware address.

Ex) In case of “00.08.DC.01.02.03”

0x0009

0x000A

0x000B

0x000C

0x000D

0x000E

0x00

0x08

0xDC

0x01

0x02

0x03

SIPR (Source IP Address Register) [R/W] [0x000F – 0x0012] [0x00]

This register sets up the Source IP address.

Ex) In case of “192.168.0.2”

0x000F

0x0010

0x0011

0x0012

192 (0xC0)

168 (0xA8)

0 (0x00)

2 (0x02)

IR (Interrupt Register) [R] [0x0015] [0x00]

This register is accessed by the host processor to know the cause of interrupt. Any

interruption can be masked in the Interrupt Mask Register (IMR2). The INTn signal retain low

as long as any masked signal is set, and will not go high until all masked bits in this Register

have been cleared.

CONFLICT

Reserved

PPPoE

Reserved

Bit

Symbol

Description

CONFLICT

IP Conflict

It is set as ‘1’ when there is ARP request with same IP address

as Source IP address. This bit is cleared to ‘0’ by writing ‘1’ to

this bit.

Reserved

PPPoE

PPPoE Connection Close

In the Point-to-Point Protocol over Ethernet (PPPoE) Mode, if

the PPPoE connection is closed, ‘1’ is set. This bit will be

cleared to ‘0’ by writing ‘1’ to this bit.

Reserved

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